diff --git a/curriculum/challenges/english/03-front-end-libraries/bootstrap/use-comments-to-clarify-code.english.md b/curriculum/challenges/english/03-front-end-libraries/bootstrap/use-comments-to-clarify-code.english.md
index 9d868483c00..95a37dbfd27 100644
--- a/curriculum/challenges/english/03-front-end-libraries/bootstrap/use-comments-to-clarify-code.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/bootstrap/use-comments-to-clarify-code.english.md
@@ -10,7 +10,7 @@ forumTopicId: 18347
 When we start using jQuery, we will modify HTML elements without needing to actually change them in HTML.
 Let's make sure that everyone knows they shouldn't actually modify any of this code directly.
 Remember that you can start a comment with <code>&#60;!--</code> and end a comment with <code>--&#62;</code>
-Add a comment at the top of your HTML that says <code>Only change code above this line.</code>
+Add a comment at the top of your HTML that says <code>Code below this line should not be changed</code>
 </section>
 
 ## Instructions
@@ -25,7 +25,7 @@ Add a comment at the top of your HTML that says <code>Only change code above thi
 tests:
   - text: You should start a comment with <code>&#60;!--</code> at the top of your HTML.
     testString: assert(code.match(/^\s*<!--/));
-  - text: Your comment should have the text <code>Only change code above this line</code>.
+  - text: Your comment should have the text <code>Code below this line should not be changed</code>.
     testString: assert(code.match(/<!--(?!(>|->|.*-->.*this line))\s*.*this line.*\s*-->/gi));
   - text: You should close your comment with <code>--&#62;</code>.
     testString: assert(code.match(/-->.*\n+.+/g));
@@ -75,7 +75,7 @@ tests:
 <section id='solution'>
 
 ```html
-<!-- Only change code above this line. -->
+<!-- Code below this line should not be changed -->
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
   <div class="row">
diff --git a/curriculum/challenges/english/03-front-end-libraries/jquery/change-text-inside-an-element-using-jquery.english.md b/curriculum/challenges/english/03-front-end-libraries/jquery/change-text-inside-an-element-using-jquery.english.md
index 2d59fe0b454..7552617864c 100644
--- a/curriculum/challenges/english/03-front-end-libraries/jquery/change-text-inside-an-element-using-jquery.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/jquery/change-text-inside-an-element-using-jquery.english.md
@@ -55,7 +55,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
diff --git a/curriculum/challenges/english/03-front-end-libraries/jquery/change-the-css-of-an-element-using-jquery.english.md b/curriculum/challenges/english/03-front-end-libraries/jquery/change-the-css-of-an-element-using-jquery.english.md
index 9e4b8c40221..b15b43bcacc 100644
--- a/curriculum/challenges/english/03-front-end-libraries/jquery/change-the-css-of-an-element-using-jquery.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/jquery/change-the-css-of-an-element-using-jquery.english.md
@@ -53,7 +53,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
@@ -98,7 +98,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
   <div class="row">
diff --git a/curriculum/challenges/english/03-front-end-libraries/jquery/clone-an-element-using-jquery.english.md b/curriculum/challenges/english/03-front-end-libraries/jquery/clone-an-element-using-jquery.english.md
index d779df304ac..207d8bb346e 100644
--- a/curriculum/challenges/english/03-front-end-libraries/jquery/clone-an-element-using-jquery.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/jquery/clone-an-element-using-jquery.english.md
@@ -52,7 +52,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
@@ -97,7 +97,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
diff --git a/curriculum/challenges/english/03-front-end-libraries/jquery/delete-your-jquery-functions.english.md b/curriculum/challenges/english/03-front-end-libraries/jquery/delete-your-jquery-functions.english.md
index d0c55db6b08..ed77fab64f6 100644
--- a/curriculum/challenges/english/03-front-end-libraries/jquery/delete-your-jquery-functions.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/jquery/delete-your-jquery-functions.english.md
@@ -53,7 +53,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
@@ -94,7 +94,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
diff --git a/curriculum/challenges/english/03-front-end-libraries/jquery/disable-an-element-using-jquery.english.md b/curriculum/challenges/english/03-front-end-libraries/jquery/disable-an-element-using-jquery.english.md
index 541bae5bee2..1bb0f9ad575 100644
--- a/curriculum/challenges/english/03-front-end-libraries/jquery/disable-an-element-using-jquery.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/jquery/disable-an-element-using-jquery.english.md
@@ -49,7 +49,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
@@ -92,7 +92,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
diff --git a/curriculum/challenges/english/03-front-end-libraries/jquery/learn-how-script-tags-and-document-ready-work.english.md b/curriculum/challenges/english/03-front-end-libraries/jquery/learn-how-script-tags-and-document-ready-work.english.md
index ca28a3f1283..13b93d64444 100644
--- a/curriculum/challenges/english/03-front-end-libraries/jquery/learn-how-script-tags-and-document-ready-work.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/jquery/learn-how-script-tags-and-document-ready-work.english.md
@@ -43,7 +43,7 @@ tests:
 <div id='html-seed'>
 
 ```html
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
@@ -82,7 +82,7 @@ tests:
   $(document).ready(function() {
   });
 </script>
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
diff --git a/curriculum/challenges/english/03-front-end-libraries/jquery/remove-an-element-using-jquery.english.md b/curriculum/challenges/english/03-front-end-libraries/jquery/remove-an-element-using-jquery.english.md
index 4a84648126f..fa33eba8be5 100644
--- a/curriculum/challenges/english/03-front-end-libraries/jquery/remove-an-element-using-jquery.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/jquery/remove-an-element-using-jquery.english.md
@@ -45,7 +45,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
@@ -88,7 +88,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
diff --git a/curriculum/challenges/english/03-front-end-libraries/jquery/remove-classes-from-an-element-with-jquery.english.md b/curriculum/challenges/english/03-front-end-libraries/jquery/remove-classes-from-an-element-with-jquery.english.md
index 08ae77ab77b..1fcf3ac6599 100644
--- a/curriculum/challenges/english/03-front-end-libraries/jquery/remove-classes-from-an-element-with-jquery.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/jquery/remove-classes-from-an-element-with-jquery.english.md
@@ -51,7 +51,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
@@ -95,7 +95,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
diff --git a/curriculum/challenges/english/03-front-end-libraries/jquery/target-a-specific-child-of-an-element-using-jquery.english.md b/curriculum/challenges/english/03-front-end-libraries/jquery/target-a-specific-child-of-an-element-using-jquery.english.md
index e3d1de674b8..9fda5f05e2c 100644
--- a/curriculum/challenges/english/03-front-end-libraries/jquery/target-a-specific-child-of-an-element-using-jquery.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/jquery/target-a-specific-child-of-an-element-using-jquery.english.md
@@ -59,7 +59,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
@@ -107,7 +107,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
diff --git a/curriculum/challenges/english/03-front-end-libraries/jquery/target-elements-by-class-using-jquery.english.md b/curriculum/challenges/english/03-front-end-libraries/jquery/target-elements-by-class-using-jquery.english.md
index 31f19497d63..74b1f9ab924 100644
--- a/curriculum/challenges/english/03-front-end-libraries/jquery/target-elements-by-class-using-jquery.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/jquery/target-elements-by-class-using-jquery.english.md
@@ -49,7 +49,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
@@ -91,7 +91,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
diff --git a/curriculum/challenges/english/03-front-end-libraries/jquery/target-elements-by-id-using-jquery.english.md b/curriculum/challenges/english/03-front-end-libraries/jquery/target-elements-by-id-using-jquery.english.md
index b4252963ec9..6b034e91102 100644
--- a/curriculum/challenges/english/03-front-end-libraries/jquery/target-elements-by-id-using-jquery.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/jquery/target-elements-by-id-using-jquery.english.md
@@ -52,7 +52,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
@@ -95,7 +95,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
diff --git a/curriculum/challenges/english/03-front-end-libraries/jquery/target-even-elements-using-jquery.english.md b/curriculum/challenges/english/03-front-end-libraries/jquery/target-even-elements-using-jquery.english.md
index a2a5cc2da60..936f8ccd373 100644
--- a/curriculum/challenges/english/03-front-end-libraries/jquery/target-even-elements-using-jquery.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/jquery/target-even-elements-using-jquery.english.md
@@ -58,7 +58,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
@@ -108,7 +108,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
diff --git a/curriculum/challenges/english/03-front-end-libraries/jquery/target-html-elements-with-selectors-using-jquery.english.md b/curriculum/challenges/english/03-front-end-libraries/jquery/target-html-elements-with-selectors-using-jquery.english.md
index 9c30a1fd02a..da541db0a5b 100644
--- a/curriculum/challenges/english/03-front-end-libraries/jquery/target-html-elements-with-selectors-using-jquery.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/jquery/target-html-elements-with-selectors-using-jquery.english.md
@@ -49,7 +49,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
@@ -90,7 +90,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
diff --git a/curriculum/challenges/english/03-front-end-libraries/jquery/target-the-children-of-an-element-using-jquery.english.md b/curriculum/challenges/english/03-front-end-libraries/jquery/target-the-children-of-an-element-using-jquery.english.md
index 2c9eed98ea0..bf60e9cfb20 100644
--- a/curriculum/challenges/english/03-front-end-libraries/jquery/target-the-children-of-an-element-using-jquery.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/jquery/target-the-children-of-an-element-using-jquery.english.md
@@ -52,7 +52,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
@@ -99,7 +99,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
diff --git a/curriculum/challenges/english/03-front-end-libraries/jquery/target-the-parent-of-an-element-using-jquery.english.md b/curriculum/challenges/english/03-front-end-libraries/jquery/target-the-parent-of-an-element-using-jquery.english.md
index 1d63b77255b..09dbee2549f 100644
--- a/curriculum/challenges/english/03-front-end-libraries/jquery/target-the-parent-of-an-element-using-jquery.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/jquery/target-the-parent-of-an-element-using-jquery.english.md
@@ -55,7 +55,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <body>
   <div class="container-fluid">
@@ -103,7 +103,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <body>
   <div class="container-fluid">
diff --git a/curriculum/challenges/english/03-front-end-libraries/jquery/target-the-same-element-with-multiple-jquery-selectors.english.md b/curriculum/challenges/english/03-front-end-libraries/jquery/target-the-same-element-with-multiple-jquery-selectors.english.md
index 082ce973026..547d609c5c4 100644
--- a/curriculum/challenges/english/03-front-end-libraries/jquery/target-the-same-element-with-multiple-jquery-selectors.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/jquery/target-the-same-element-with-multiple-jquery-selectors.english.md
@@ -57,7 +57,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
@@ -100,7 +100,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
diff --git a/curriculum/challenges/english/03-front-end-libraries/jquery/use-appendto-to-move-elements-with-jquery.english.md b/curriculum/challenges/english/03-front-end-libraries/jquery/use-appendto-to-move-elements-with-jquery.english.md
index d937ee8f3a8..4d91f796ed1 100644
--- a/curriculum/challenges/english/03-front-end-libraries/jquery/use-appendto-to-move-elements-with-jquery.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/jquery/use-appendto-to-move-elements-with-jquery.english.md
@@ -50,7 +50,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
@@ -94,7 +94,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
diff --git a/curriculum/challenges/english/03-front-end-libraries/jquery/use-jquery-to-modify-the-entire-page.english.md b/curriculum/challenges/english/03-front-end-libraries/jquery/use-jquery-to-modify-the-entire-page.english.md
index 7f9f6e46b25..a98dea39f4a 100644
--- a/curriculum/challenges/english/03-front-end-libraries/jquery/use-jquery-to-modify-the-entire-page.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/jquery/use-jquery-to-modify-the-entire-page.english.md
@@ -54,7 +54,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
@@ -105,7 +105,7 @@ tests:
   });
 </script>
 
-<!-- Only change code above this line. -->
+<!-- Only change code above this line -->
 
 <div class="container-fluid">
   <h3 class="text-primary text-center">jQuery Playground</h3>
diff --git a/curriculum/challenges/english/03-front-end-libraries/react-and-redux/connect-redux-to-react.english.md b/curriculum/challenges/english/03-front-end-libraries/react-and-redux/connect-redux-to-react.english.md
index a8ad10146b0..1bbd913f6cf 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react-and-redux/connect-redux-to-react.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react-and-redux/connect-redux-to-react.english.md
@@ -72,7 +72,7 @@ class Presentational extends React.Component {
 };
 
 const connect = ReactRedux.connect;
-// change code below this line
+// Change code below this line
 
 ```
 
@@ -139,7 +139,7 @@ class Presentational extends React.Component {
 };
 
 const connect = ReactRedux.connect;
-// change code below this line
+// Change code below this line
 
 const ConnectedComponent = connect(mapStateToProps, mapDispatchToProps)(Presentational);
 
diff --git a/curriculum/challenges/english/03-front-end-libraries/react-and-redux/connect-redux-to-the-messages-app.english.md b/curriculum/challenges/english/03-front-end-libraries/react-and-redux/connect-redux-to-the-messages-app.english.md
index d7548ff3262..47ff92f06b5 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react-and-redux/connect-redux-to-the-messages-app.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react-and-redux/connect-redux-to-the-messages-app.english.md
@@ -129,7 +129,7 @@ const mapDispatchToProps = (dispatch) => {
 const Provider = ReactRedux.Provider;
 const connect = ReactRedux.connect;
 
-// define the Container component here:
+// Define the Container component here:
 
 
 class AppWrapper extends React.Component {
@@ -137,7 +137,7 @@ class AppWrapper extends React.Component {
     super(props);
   }
   render() {
-    // complete the return statement:
+    // Complete the return statement:
     return (null);
   }
 };
@@ -248,7 +248,6 @@ const mapDispatchToProps = (dispatch) => {
 const Provider = ReactRedux.Provider;
 const connect = ReactRedux.connect;
 
-// define the Container component here:
 const Container = connect(mapStateToProps, mapDispatchToProps)(Presentational);
 
 class AppWrapper extends React.Component {
@@ -256,7 +255,6 @@ class AppWrapper extends React.Component {
     super(props);
   }
   render() {
-    // complete the return statement:
     return (
       <Provider store={store}>
         <Container/>
diff --git a/curriculum/challenges/english/03-front-end-libraries/react-and-redux/extract-state-logic-to-redux.english.md b/curriculum/challenges/english/03-front-end-libraries/react-and-redux/extract-state-logic-to-redux.english.md
index 974e174713d..a85d2443df3 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react-and-redux/extract-state-logic-to-redux.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react-and-redux/extract-state-logic-to-redux.english.md
@@ -45,7 +45,7 @@ tests:
 <div id='jsx-seed'>
 
 ```jsx
-// define ADD, addMessage(), messageReducer(), and store here:
+// Define ADD, addMessage(), messageReducer(), and store here:
 
 ```
 
diff --git a/curriculum/challenges/english/03-front-end-libraries/react-and-redux/getting-started-with-react-redux.english.md b/curriculum/challenges/english/03-front-end-libraries/react-and-redux/getting-started-with-react-redux.english.md
index dfeaa07d2e6..1347791d6ea 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react-and-redux/getting-started-with-react-redux.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react-and-redux/getting-started-with-react-redux.english.md
@@ -41,9 +41,9 @@ tests:
 
 ```jsx
 class DisplayMessages extends React.Component {
-  // change code below this line
+  // Change code below this line
 
-  // change code above this line
+  // Change code above this line
   render() {
     return <div />
   }
diff --git a/curriculum/challenges/english/03-front-end-libraries/react-and-redux/manage-state-locally-first.english.md b/curriculum/challenges/english/03-front-end-libraries/react-and-redux/manage-state-locally-first.english.md
index 04107a75401..4001699c16f 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react-and-redux/manage-state-locally-first.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react-and-redux/manage-state-locally-first.english.md
@@ -56,15 +56,15 @@ class DisplayMessages extends React.Component {
       messages: []
     }
   }
-  // add handleChange() and submitMessage() methods here
+  // Add handleChange() and submitMessage() methods here
 
   render() {
     return (
       <div>
         <h2>Type in a new Message:</h2>
-        { /* render an input, button, and ul here */ }
+        { /* Render an input, button, and ul below this line */ }
 
-        { /* change code above this line */ }
+        { /* Change code above this line */ }
       </div>
     );
   }
diff --git a/curriculum/challenges/english/03-front-end-libraries/react-and-redux/map-dispatch-to-props.english.md b/curriculum/challenges/english/03-front-end-libraries/react-and-redux/map-dispatch-to-props.english.md
index 23ece6dc14f..0f07d5a1ba9 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react-and-redux/map-dispatch-to-props.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react-and-redux/map-dispatch-to-props.english.md
@@ -57,7 +57,7 @@ const addMessage = (message) => {
   }
 };
 
-// change code below this line
+// Change code below this line
 
 ```
 
@@ -79,7 +79,7 @@ const addMessage = (message) => {
   }
 };
 
-// change code below this line
+// Change code below this line
 
 const mapDispatchToProps = (dispatch) => {
   return {
diff --git a/curriculum/challenges/english/03-front-end-libraries/react-and-redux/map-state-to-props.english.md b/curriculum/challenges/english/03-front-end-libraries/react-and-redux/map-state-to-props.english.md
index 4126a83aaef..9980eb5707e 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react-and-redux/map-state-to-props.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react-and-redux/map-state-to-props.english.md
@@ -44,7 +44,7 @@ tests:
 ```jsx
 const state = [];
 
-// change code below this line
+// Change code below this line
 
 ```
 
@@ -61,7 +61,7 @@ const state = [];
 ```js
 const state = [];
 
-// change code below this line
+// Change code below this line
 
 const mapStateToProps = (state) => {
   return {
diff --git a/curriculum/challenges/english/03-front-end-libraries/react-and-redux/moving-forward-from-here.english.md b/curriculum/challenges/english/03-front-end-libraries/react-and-redux/moving-forward-from-here.english.md
index 81ab835b4a8..92fd5e410c7 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react-and-redux/moving-forward-from-here.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react-and-redux/moving-forward-from-here.english.md
@@ -37,28 +37,28 @@ tests:
 <div id='jsx-seed'>
 
 ```jsx
-// import React from 'react'
-// import ReactDOM from 'react-dom'
-// import { Provider, connect } from 'react-redux'
-// import { createStore, combineReducers, applyMiddleware } from 'redux'
-// import thunk from 'redux-thunk'
+/*
+import React from 'react'
+import ReactDOM from 'react-dom'
+import { Provider, connect } from 'react-redux'
+import { createStore, combineReducers, applyMiddleware } from 'redux'
+import thunk from 'redux-thunk'
 
-// import rootReducer from './redux/reducers'
-// import App from './components/App'
+import rootReducer from './redux/reducers'
+import App from './components/App'
 
-// const store = createStore(
-//   rootReducer,
-//   applyMiddleware(thunk)
-// );
+const store = createStore(
+  rootReducer,
+  applyMiddleware(thunk)
+);
 
-// ReactDOM.render(
-//   <Provider store={store}>
-//     <App/>
-//   </Provider>,
-//   document.getElementById('root')
-// );
-
-// change code below this line
+ReactDOM.render(
+  <Provider store={store}>
+    <App/>
+  </Provider>,
+  document.getElementById('root')
+);
+*/
 
 ```
 
diff --git a/curriculum/challenges/english/03-front-end-libraries/react-and-redux/use-provider-to-connect-redux-to-react.english.md b/curriculum/challenges/english/03-front-end-libraries/react-and-redux/use-provider-to-connect-redux-to-react.english.md
index 2235029a871..89b5b43ed25 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react-and-redux/use-provider-to-connect-redux-to-react.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react-and-redux/use-provider-to-connect-redux-to-react.english.md
@@ -49,7 +49,7 @@ tests:
 <div id='jsx-seed'>
 
 ```jsx
-// Redux Code:
+// Redux:
 const ADD = 'ADD';
 
 const addMessage = (message) => {
@@ -75,7 +75,7 @@ const messageReducer = (state = [], action) => {
 
 const store = Redux.createStore(messageReducer);
 
-// React Code:
+// React:
 
 class DisplayMessages extends React.Component {
   constructor(props) {
@@ -125,9 +125,9 @@ class DisplayMessages extends React.Component {
 const Provider = ReactRedux.Provider;
 
 class AppWrapper extends React.Component {
-  // render the Provider here
+  // Render the Provider below this line
 
-  // change code above this line
+  // Change code above this line
 };
 ```
 
@@ -150,7 +150,7 @@ ReactDOM.render(<AppWrapper />, document.getElementById('root'))
 
 
 ```js
-// Redux Code:
+// Redux:
 const ADD = 'ADD';
 
 const addMessage = (message) => {
@@ -174,7 +174,7 @@ const messageReducer = (state = [], action) => {
 
 const store = Redux.createStore(messageReducer);
 
-// React Code:
+// React:
 
 class DisplayMessages extends React.Component {
   constructor(props) {
@@ -224,7 +224,7 @@ class DisplayMessages extends React.Component {
 const Provider = ReactRedux.Provider;
 
 class AppWrapper extends React.Component {
-  // change code below this line
+  // Change code below this line
   render() {
     return (
       <Provider store = {store}>
@@ -232,7 +232,7 @@ class AppWrapper extends React.Component {
       </Provider>
     );
   }
-  // change code above this line
+  // Change code above this line
 };
 ```
 
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/access-props-using-this.props.english.md b/curriculum/challenges/english/03-front-end-libraries/react/access-props-using-this.props.english.md
index a6adbaac884..e86ed9ab53a 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/access-props-using-this.props.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/access-props-using-this.props.english.md
@@ -51,9 +51,9 @@ class ReturnTempPassword extends React.Component {
   render() {
     return (
         <div>
-            { /* change code below this line */ }
+            { /* Change code below this line */ }
             <p>Your temporary password is: <strong></strong></p>
-            { /* change code above this line */ }
+            { /* Change code above this line */ }
         </div>
     );
   }
@@ -70,9 +70,9 @@ class ResetPassword extends React.Component {
           <h2>Reset Password</h2>
           <h3>We've generated a new temporary password for you.</h3>
           <h3>Please reset this password from your account settings ASAP.</h3>
-          { /* change code below this line */ }
+          { /* Change code below this line */ }
 
-          { /* change code above this line */ }
+          { /* Change code above this line */ }
         </div>
     );
   }
@@ -123,9 +123,9 @@ class ResetPassword extends React.Component {
           <h2>Reset Password</h2>
           <h3>We've generated a new temporary password for you.</h3>
           <h3>Please reset this password from your account settings ASAP.</h3>
-          { /* change code below this line */ }
+          { /* Change code below this line */ }
           <ReturnTempPassword tempPassword="serrPbqrPnzc" />
-          { /* change code above this line */ }
+          { /* Change code above this line */ }
         </div>
     );
   }
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/add-event-listeners.english.md b/curriculum/challenges/english/03-front-end-libraries/react/add-event-listeners.english.md
index db39f40e56b..c576155d49e 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/add-event-listeners.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/add-event-listeners.english.md
@@ -51,14 +51,14 @@ class MyComponent extends React.Component {
     this.handleEnter = this.handleEnter.bind(this);
     this.handleKeyPress = this.handleKeyPress.bind(this);
   }
-  // change code below this line
+  // Change code below this line
   componentDidMount() {
 
   }
   componentWillUnmount() {
 
   }
-  // change code above this line
+  // Change code above this line
   handleEnter() {
     this.setState((state) => ({
       message: state.message + 'You pressed the enter key! '
@@ -107,14 +107,14 @@ class MyComponent extends React.Component {
     this.handleKeyPress = this.handleKeyPress.bind(this);
     this.handleEnter = this.handleEnter.bind(this);  }
   componentDidMount() {
-    // change code below this line
+    // Change code below this line
     document.addEventListener('keydown', this.handleKeyPress);
-    // change code above this line
+    // Change code above this line
   }
   componentWillUnmount() {
-    // change code below this line
+    // Change code below this line
     document.removeEventListener('keydown', this.handleKeyPress);
-    // change code above this line
+    // Change code above this line
   }
   handleEnter() {
     this.setState((state) => ({
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/add-inline-styles-in-react.english.md b/curriculum/challenges/english/03-front-end-libraries/react/add-inline-styles-in-react.english.md
index 99de1833bc4..0dcfb13de07 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/add-inline-styles-in-react.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/add-inline-styles-in-react.english.md
@@ -14,7 +14,7 @@ All property value length units (like <code>height</code>, <code>width</code>, a
 
 ## Instructions
 <section id='instructions'>
-If you have a large set of styles, you can assign a style <code>object</code> to a constant to keep your code organized. Uncomment the <code>styles</code> constant and declare an <code>object</code> with three style properties and their values. Give the <code>div</code> a color of <code>"purple"</code>, a font-size of <code>40</code>, and a border of <code>"2px solid purple"</code>. Then set the <code>style</code> attribute equal to the <code>styles</code> constant.
+If you have a large set of styles, you can assign a style <code>object</code> to a constant to keep your code organized. Initialize a <code>styles</code> constant and assign an <code>object</code> with three style properties and their values to it. Give the <code>div</code> a color of <code>"purple"</code>, a font-size of <code>40</code>, and a border of <code>"2px solid purple"</code>. Then set the <code>style</code> attribute equal to the <code>styles</code> constant.
 </section>
 
 ## Tests
@@ -46,15 +46,15 @@ tests:
 
 ```jsx
 
-// const styles =
-// change code above this line
+
+// Change code above this line
 class Colorful extends React.Component {
   render() {
-    // change code below this line
+    // Change code below this line
     return (
       <div style={{color: "yellow", fontSize: 24}}>Style Me!</div>
     );
-    // change code above this line
+    // Change code above this line
   }
 };
 
@@ -84,14 +84,14 @@ const styles = {
   fontSize: 40,
   border: "2px solid purple"
 };
-// change code above this line
+// Change code above this line
 class Colorful extends React.Component {
   render() {
-    // change code below this line
+    // Change code below this line
     return (
       <div style={styles}>Style Me!</div>
-  // change code above this line
     );
+    // Change code above this line
   }
 };
 
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/bind-this-to-a-class-method.english.md b/curriculum/challenges/english/03-front-end-libraries/react/bind-this-to-a-class-method.english.md
index 8e29ff086c1..76474eb4fa5 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/bind-this-to-a-class-method.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/bind-this-to-a-class-method.english.md
@@ -48,9 +48,9 @@ class MyComponent extends React.Component {
     this.state = {
       text: "Hello"
     };
-    // change code below this line
+    // Change code below this line
 
-    // change code above this line
+    // Change code above this line
   }
   handleClick() {
     this.setState({
@@ -60,9 +60,9 @@ class MyComponent extends React.Component {
   render() {
     return (
       <div>
-        { /* change code below this line */ }
+        { /* Change code below this line */ }
         <button>Click Me</button>
-        { /* change code above this line */ }
+        { /* Change code above this line */ }
         <h1>{this.state.text}</h1>
       </div>
     );
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/change-inline-css-conditionally-based-on-component-state.english.md b/curriculum/challenges/english/03-front-end-libraries/react/change-inline-css-conditionally-based-on-component-state.english.md
index c70087c3780..f0d853eaa9a 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/change-inline-css-conditionally-based-on-component-state.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/change-inline-css-conditionally-based-on-component-state.english.md
@@ -59,9 +59,9 @@ class GateKeeper extends React.Component {
     let inputStyle = {
       border: '1px solid black'
     };
-    // change code below this line
+    // Change code below this line
 
-    // change code above this line
+    // Change code above this line
     return (
       <div>
         <h3>Don't Type Too Much:</h3>
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/compose-react-components.english.md b/curriculum/challenges/english/03-front-end-libraries/react/compose-react-components.english.md
index 39ed995f2c5..8bb9ac0a74c 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/compose-react-components.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/compose-react-components.english.md
@@ -49,9 +49,9 @@ class Fruits extends React.Component {
     return (
       <div>
         <h2>Fruits:</h2>
-        { /* change code below this line */ }
+        { /* Change code below this line */ }
 
-        { /* change code above this line */ }
+        { /* Change code above this line */ }
       </div>
     );
   }
@@ -65,9 +65,9 @@ class TypesOfFood extends React.Component {
     return (
       <div>
         <h1>Types of Food:</h1>
-        { /* change code below this line */ }
+        { /* Change code below this line */ }
 
-        { /* change code above this line */ }
+        { /* Change code above this line */ }
         <Vegetables />
       </div>
     );
@@ -153,10 +153,10 @@ class Fruits extends React.Component {
     return (
       <div>
         <h2>Fruits:</h2>
-        { /* change code below this line */ }
+        { /* Change code below this line */ }
         <NonCitrus />
         <Citrus />
-        { /* change code above this line */ }
+        { /* Change code above this line */ }
       </div>
     )
   }
@@ -170,9 +170,9 @@ class TypesOfFood extends React.Component {
       return (
         <div>
         <h1>Types of Food:</h1>
-          { /* change code below this line */ }
+          { /* Change code below this line */ }
           <Fruits />
-          { /* change code above this line */ }
+          { /* Change code above this line */ }
           <Vegetables />
         </div>
       );
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/create-a-complex-jsx-element.english.md b/curriculum/challenges/english/03-front-end-libraries/react/create-a-complex-jsx-element.english.md
index d128b1c52fb..8f795b751d2 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/create-a-complex-jsx-element.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/create-a-complex-jsx-element.english.md
@@ -66,7 +66,7 @@ tests:
 <div id='jsx-seed'>
 
 ```jsx
-// write your code here
+
 
 ```
 
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/create-a-component-with-composition.english.md b/curriculum/challenges/english/03-front-end-libraries/react/create-a-component-with-composition.english.md
index d15b8df6b9b..e7503ec9c0b 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/create-a-component-with-composition.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/create-a-component-with-composition.english.md
@@ -68,10 +68,10 @@ class ParentComponent extends React.Component {
     return (
       <div>
         <h1>I am the parent</h1>
-        { /* change code below this line */ }
+        { /* Change code below this line */ }
 
 
-        { /* change code above this line */ }
+        { /* Change code above this line */ }
       </div>
     );
   }
@@ -113,9 +113,9 @@ class ParentComponent extends React.Component {
     return (
       <div>
         <h1>I am the parent</h1>
-        { /* change code below this line */ }
+        { /* Change code below this line */ }
         <ChildComponent />
-        { /* change code above this line */ }
+        { /* Change code above this line */ }
       </div>
     );
   }
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/create-a-controlled-form.english.md b/curriculum/challenges/english/03-front-end-libraries/react/create-a-controlled-form.english.md
index 36fab329c65..28a24a44f71 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/create-a-controlled-form.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/create-a-controlled-form.english.md
@@ -124,22 +124,22 @@ class MyForm extends React.Component {
     });
   }
   handleSubmit(event) {
-    // change code below this line
+    // Change code below this line
     
-    // change code above this line
+    // Change code above this line
   }
   render() {
     return (
       <div>
         <form onSubmit={this.handleSubmit}>
-          {/* change code below this line */}
+          {/* Change code below this line */}
 
-          {/* change code above this line */}
+          {/* Change code above this line */}
           <button type='submit'>Submit!</button>
         </form>
-        {/* change code below this line */}
+        {/* Change code below this line */}
 
-        {/* change code above this line */}
+        {/* Change code above this line */}
       </div>
     );
   }
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/create-a-controlled-input.english.md b/curriculum/challenges/english/03-front-end-libraries/react/create-a-controlled-input.english.md
index ba636795d7b..0ab8e05a9f6 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/create-a-controlled-input.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/create-a-controlled-input.english.md
@@ -48,19 +48,19 @@ class ControlledInput extends React.Component {
     this.state = {
       input: ''
     };
-    // change code below this line
+    // Change code below this line
 
-    // change code above this line
+    // Change code above this line
   }
-  // change code below this line
+  // Change code below this line
 
-  // change code above this line
+  // Change code above this line
   render() {
     return (
       <div>
-        { /* change code below this line */}
+        { /* Change code below this line */}
 
-        { /* change code above this line */}
+        { /* Change code above this line */}
         <h4>Controlled Input:</h4>
         <p>{this.state.input}</p>
       </div>
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/create-a-react-component.english.md b/curriculum/challenges/english/03-front-end-libraries/react/create-a-react-component.english.md
index 9ce563e6938..0c2f3c21477 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/create-a-react-component.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/create-a-react-component.english.md
@@ -61,11 +61,11 @@ class MyComponent extends React.Component {
     super(props);
   }
   render() {
-    // change code below this line
+    // Change code below this line
 
 
 
-    // change code above this line
+    // Change code above this line
   }
 };
 ```
@@ -94,13 +94,13 @@ class MyComponent extends React.Component {
     super(props);
   }
   render() {
-    // change code below this line
+    // Change code below this line
     return (
       <div>
         <h1>Hello React!</h1>
       </div>
     );
-    // change code above this line
+    // Change code above this line
   }
 };
 ```
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/create-a-stateful-component.english.md b/curriculum/challenges/english/03-front-end-libraries/react/create-a-stateful-component.english.md
index 638d733e9e3..a6d610dc959 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/create-a-stateful-component.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/create-a-stateful-component.english.md
@@ -53,8 +53,9 @@ tests:
 class StatefulComponent extends React.Component {
   constructor(props) {
     super(props);
-    // initialize state here
+    // Only change code below this line
 
+    // Only change code above this line
   }
   render() {
     return (
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/create-a-stateless-functional-component.english.md b/curriculum/challenges/english/03-front-end-libraries/react/create-a-stateless-functional-component.english.md
index 82cefd8198c..268ae9d016e 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/create-a-stateless-functional-component.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/create-a-stateless-functional-component.english.md
@@ -53,11 +53,11 @@ tests:
 
 ```jsx
 const MyComponent = function() {
-  // change code below this line
+  // Change code below this line
 
 
 
-  // change code above this line
+  // Change code above this line
 }
 ```
 
@@ -81,13 +81,13 @@ ReactDOM.render(<MyComponent />, document.getElementById('root'))
 
 ```js
 const MyComponent = function() {
-  // change code below this line
+  // Change code below this line
   return (
     <div>
       Demo Solution
     </div>
   );
-  // change code above this line
+  // Change code above this line
 }
 ```
 
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/give-sibling-elements-a-unique-key-attribute.english.md b/curriculum/challenges/english/03-front-end-libraries/react/give-sibling-elements-a-unique-key-attribute.english.md
index b27a20394df..00b693c86bb 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/give-sibling-elements-a-unique-key-attribute.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/give-sibling-elements-a-unique-key-attribute.english.md
@@ -56,7 +56,7 @@ const frontEndFrameworks = [
 ];
 
 function Frameworks() {
-  const renderFrameworks = null; // change code here
+  const renderFrameworks = null; // Change this line
   return (
     <div>
       <h1>Popular Front End JavaScript Frameworks</h1>
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/learn-about-self-closing-jsx-tags.english.md b/curriculum/challenges/english/03-front-end-libraries/react/learn-about-self-closing-jsx-tags.english.md
index 3b751ac1e0d..4a8144932b2 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/learn-about-self-closing-jsx-tags.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/learn-about-self-closing-jsx-tags.english.md
@@ -44,11 +44,9 @@ tests:
 ```jsx
 const JSX = (
   <div>
-    {/* remove comment and change code below this line
     <h2>Welcome to React!</h2> <br >
     <p>Be sure to close all tags!</p>
     <hr >
-    remove comment and change code above this line */}
   </div>
 );
 
@@ -75,11 +73,9 @@ ReactDOM.render(JSX, document.getElementById('root'))
 ```js
 const JSX = (
 <div>
-  {/* change code below this line */}
   <h2>Welcome to React!</h2> <br />
   <p>Be sure to close all tags!</p>
   <hr />
-  {/* change code above this line */}
 </div>
 );
 ```
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/optimize-re-renders-with-shouldcomponentupdate.english.md b/curriculum/challenges/english/03-front-end-libraries/react/optimize-re-renders-with-shouldcomponentupdate.english.md
index c5e2fa4461e..fbe95d1432b 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/optimize-re-renders-with-shouldcomponentupdate.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/optimize-re-renders-with-shouldcomponentupdate.english.md
@@ -84,9 +84,9 @@ class OnlyEvens extends React.Component {
   }
   shouldComponentUpdate(nextProps, nextState) {
     console.log('Should I update?');
-    // change code below this line
+    // Change code below this line
     return true;
-    // change code above this line
+    // Change code above this line
   }
   componentDidUpdate() {
     console.log('Component re-rendered.');
@@ -145,9 +145,9 @@ class OnlyEvens extends React.Component {
   }
   shouldComponentUpdate(nextProps, nextState) {
     console.log('Should I update?');
-    // change code below this line
+    // Change code below this line
     return nextProps.value % 2 === 0;
-    // change code above this line
+    // Change code above this line
   }
   componentDidUpdate() {
     console.log('Component re-rendered.');
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/override-default-props.english.md b/curriculum/challenges/english/03-front-end-libraries/react/override-default-props.english.md
index 4bfe3495e39..4e8d6b3b134 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/override-default-props.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/override-default-props.english.md
@@ -52,9 +52,9 @@ class ShoppingCart extends React.Component {
     super(props);
   }
   render() {
-    { /* change code below this line */ }
+    { /* Change code below this line */ }
     return <Items />
-    { /* change code above this line */ }
+    { /* Change code above this line */ }
   }
 };
 ```
@@ -91,9 +91,9 @@ class ShoppingCart extends React.Component {
     super(props);
   }
   render() {
-    { /* change code below this line */ }
+    { /* Change code below this line */ }
     return <Items quantity = {10} />
-    { /* change code above this line */ }
+    { /* Change code above this line */ }
   }
 };
 ```
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/pass-a-callback-as-props.english.md b/curriculum/challenges/english/03-front-end-libraries/react/pass-a-callback-as-props.english.md
index 7f6d11ac64f..eb6a997ed61 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/pass-a-callback-as-props.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/pass-a-callback-as-props.english.md
@@ -59,9 +59,9 @@ class MyApp extends React.Component {
   render() {
     return (
        <div>
-        { /* change code below this line */ }
+        { /* Change code below this line */ }
 
-        { /* change code above this line */ }
+        { /* Change code above this line */ }
        </div>
     );
   }
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/pass-an-array-as-props.english.md b/curriculum/challenges/english/03-front-end-libraries/react/pass-an-array-as-props.english.md
index bf82814a5dc..e75cdd87201 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/pass-an-array-as-props.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/pass-an-array-as-props.english.md
@@ -66,9 +66,9 @@ tests:
 
 ```jsx
 const List = (props) => {
-  { /* change code below this line */ }
+  { /* Change code below this line */ }
   return <p>{}</p>
-  { /* change code above this line */ }
+  { /* Change code above this line */ }
 };
 
 class ToDo extends React.Component {
@@ -80,11 +80,11 @@ class ToDo extends React.Component {
       <div>
         <h1>To Do Lists</h1>
         <h2>Today</h2>
-        { /* change code below this line */ }
+        { /* Change code below this line */ }
         <List/>
         <h2>Tomorrow</h2>
         <List/>
-        { /* change code above this line */ }
+        { /* Change code above this line */ }
       </div>
     );
   }
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/pass-props-to-a-stateless-functional-component.english.md b/curriculum/challenges/english/03-front-end-libraries/react/pass-props-to-a-stateless-functional-component.english.md
index 309767753a8..77865229c90 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/pass-props-to-a-stateless-functional-component.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/pass-props-to-a-stateless-functional-component.english.md
@@ -63,9 +63,9 @@ tests:
 const CurrentDate = (props) => {
   return (
     <div>
-      { /* change code below this line */ }
+      { /* Change code below this line */ }
       <p>The current date is: </p>
-      { /* change code above this line */ }
+      { /* Change code above this line */ }
     </div>
   );
 };
@@ -78,9 +78,9 @@ class Calendar extends React.Component {
     return (
       <div>
         <h3>What date is it?</h3>
-        { /* change code below this line */ }
+        { /* Change code below this line */ }
         <CurrentDate />
-        { /* change code above this line */ }
+        { /* Change code above this line */ }
       </div>
     );
   }
@@ -109,9 +109,9 @@ ReactDOM.render(<Calendar />, document.getElementById('root'))
 const CurrentDate = (props) => {
   return (
     <div>
-      { /* change code below this line */ }
+      { /* Change code below this line */ }
       <p>The current date is: {props.date}</p>
-      { /* change code above this line */ }
+      { /* Change code above this line */ }
     </div>
   );
 };
@@ -124,9 +124,9 @@ class Calendar extends React.Component {
     return (
       <div>
         <h3>What date is it?</h3>
-        { /* change code below this line */ }
+        { /* Change code below this line */ }
         <CurrentDate date={Date()} />
-        { /* change code above this line */ }
+        { /* Change code above this line */ }
       </div>
     );
   }
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/pass-state-as-props-to-child-components.english.md b/curriculum/challenges/english/03-front-end-libraries/react/pass-state-as-props-to-child-components.english.md
index aeb220c4d92..3f95623d5f6 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/pass-state-as-props-to-child-components.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/pass-state-as-props-to-child-components.english.md
@@ -15,7 +15,7 @@ This pattern illustrates some important paradigms in React. The first is <em>uni
 
 ## Instructions
 <section id='instructions'>
-The <code>MyApp</code> component is stateful and renders a <code>Navbar</code> component as a child. Pass the <code>name</code> property in its <code>state</code> down to the child component, then show the <code>name</code> in the <code>h1</code> tag that's part of the <code>Navbar</code> render method.
+The <code>MyApp</code> component is stateful and renders a <code>Navbar</code> component as a child. Pass the <code>name</code> property in its <code>state</code> down to the child component, then show the <code>name</code> in the <code>h1</code> tag that's part of the <code>Navbar</code> render method. <code>name</code> should appear after the text <code>Hello, my name is: </code>.
 </section>
 
 ## Tests
@@ -50,7 +50,9 @@ class MyApp extends React.Component {
   render() {
     return (
        <div>
-         <Navbar /* your code here */ />
+         {/* Change code below this line */}
+         <Navbar />
+         {/* Change code above this line */}
        </div>
     );
   }
@@ -63,7 +65,9 @@ class Navbar extends React.Component {
   render() {
     return (
     <div>
-      <h1>Hello, my name is: {/* your code here */} </h1>
+      {/* Change code below this line */}
+      <h1>Hello, my name is: </h1>
+      {/* Change code above this line */}
     </div>
     );
   }
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/render-a-class-component-to-the-dom.english.md b/curriculum/challenges/english/03-front-end-libraries/react/render-a-class-component-to-the-dom.english.md
index 878027ccd9b..e4be436c084 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/render-a-class-component-to-the-dom.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/render-a-class-component-to-the-dom.english.md
@@ -51,15 +51,15 @@ class TypesOfFood extends React.Component {
     return (
       <div>
         <h1>Types of Food:</h1>
-        {/* change code below this line */}
+        {/* Change code below this line */}
 
-        {/* change code above this line */}
+        {/* Change code above this line */}
       </div>
     );
   }
 };
 
-// change code below this line
+// Change code below this line
 
 ```
 
@@ -124,16 +124,16 @@ class TypesOfFood extends React.Component {
     return (
       <div>
         <h1>Types of Food:</h1>
-        {/* change code below this line */}
+        {/* Change code below this line */}
           <Fruits />
            <Vegetables />
-         {/* change code above this line */}
+         {/* Change code above this line */}
       </div>
     );
   }
 };
 
-// change code below this line
+// Change code below this line
 ReactDOM.render(<TypesOfFood />, document.getElementById('challenge-node'));
 ```
 
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/render-conditionally-from-props.english.md b/curriculum/challenges/english/03-front-end-libraries/react/render-conditionally-from-props.english.md
index e8a5f601eec..43e713c225c 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/render-conditionally-from-props.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/render-conditionally-from-props.english.md
@@ -18,7 +18,7 @@ In this challenge, you'll set up a child component to make rendering decisions b
 <section id='instructions'>
 The code editor has two components that are partially defined for you: a parent called <code>GameOfChance</code>, and a child called <code>Results</code>. They are used to create a simple game where the user presses a button to see if they win or lose.
 First, you'll need a simple expression that randomly returns a different value every time it is run. You can use <code>Math.random()</code>. This method returns a value between <code>0</code> (inclusive) and <code>1</code> (exclusive) each time it is called. So for 50/50 odds, use <code>Math.random() >= .5</code> in your expression. Statistically speaking, this expression will return <code>true</code> 50% of the time, and <code>false</code> the other 50%. On line 30, replace the comment with this expression to complete the variable declaration.
-Now you have an expression that you can use to make a randomized decision in the code. Next you need to implement this. Render the <code>Results</code> component as a child of <code>GameOfChance</code>, and pass in <code>expression</code> as a prop called <code>fiftyFifty</code>. In the <code>Results</code> component, write a ternary expression to render the text <code>"You Win!"</code> or <code>"You Lose!"</code> based on the <code>fiftyFifty</code> prop that's being passed in from <code>GameOfChance</code>. Finally, make sure the <code>handleClick()</code> method is correctly counting each turn so the user knows how many times they've played. This also serves to let the user know the component has actually updated in case they win or lose twice in a row.
+Now you have an expression that you can use to make a randomized decision in the code. Next you need to implement this. Render the <code>Results</code> component as a child of <code>GameOfChance</code>, and pass in <code>expression</code> as a prop called <code>fiftyFifty</code>. In the <code>Results</code> component, write a ternary expression to render the <code>h1</code> element with the text <code>"You Win!"</code> or <code>"You Lose!"</code> based on the <code>fiftyFifty</code> prop that's being passed in from <code>GameOfChance</code>. Finally, make sure the <code>handleClick()</code> method is correctly counting each turn so the user knows how many times they've played. This also serves to let the user know the component has actually updated in case they win or lose twice in a row.
 </section>
 
 ## Tests
@@ -186,7 +186,9 @@ class Results extends React.Component {
     super(props);
   }
   render() {
-    return <h1>{/* change code here */}</h1>;
+    {/* Change code below this line */}
+    return <h1></h1>;
+    {/* Change code above this line */}
   }
 }
 
@@ -200,17 +202,17 @@ class GameOfChance extends React.Component {
   }
   handleClick() {
     this.setState({
-      counter: 0 // change code here
+      counter: 0 // Change this line
     });
   }
   render() {
-    const expression = null; // change code here
+    const expression = null; // Change this line
     return (
       <div>
         <button onClick={this.handleClick}>Play Again</button>
-        {/* change code below this line */}
+        {/* Change code below this line */}
 
-        {/* change code above this line */}
+        {/* Change code above this line */}
         <p>{'Turn: ' + this.state.counter}</p>
       </div>
     );
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/render-html-elements-to-the-dom.english.md b/curriculum/challenges/english/03-front-end-libraries/react/render-html-elements-to-the-dom.english.md
index c99700fa360..c702cbbe37a 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/render-html-elements-to-the-dom.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/render-html-elements-to-the-dom.english.md
@@ -48,7 +48,7 @@ const JSX = (
     <p>Lets render this to the DOM</p>
   </div>
 );
-// change code below this line
+// Change code below this line
 
 ```
 
@@ -69,7 +69,7 @@ const JSX = (
   <p>Lets render this to the DOM</p>
 </div>
 );
-// change code below this line
+// Change code below this line
 ReactDOM.render(JSX, document.getElementById('challenge-node'));
 ```
 
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/render-react-on-the-server-with-rendertostring.english.md b/curriculum/challenges/english/03-front-end-libraries/react/render-react-on-the-server-with-rendertostring.english.md
index 2c210a68f05..f207e79e10f 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/render-react-on-the-server-with-rendertostring.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/render-react-on-the-server-with-rendertostring.english.md
@@ -45,7 +45,7 @@ class App extends React.Component {
   }
 };
 
-// change code below this line
+// Change code below this line
 
 ```
 
@@ -85,7 +85,7 @@ class App extends React.Component {
   }
 };
 
-// change code below this line
+// Change code below this line
 ReactDOMServer.renderToString(<App/>);
 ```
 
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/render-state-in-the-user-interface-another-way.english.md b/curriculum/challenges/english/03-front-end-libraries/react/render-state-in-the-user-interface-another-way.english.md
index 82a2fc86c31..30b04ea014c 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/render-state-in-the-user-interface-another-way.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/render-state-in-the-user-interface-another-way.english.md
@@ -49,14 +49,14 @@ class MyComponent extends React.Component {
     }
   }
   render() {
-    // change code below this line
+    // Change code below this line
 
-    // change code above this line
+    // Change code above this line
     return (
       <div>
-        { /* change code below this line */ }
+        { /* Change code below this line */ }
 
-        { /* change code above this line */ }
+        { /* Change code above this line */ }
       </div>
     );
   }
@@ -90,14 +90,14 @@ class MyComponent extends React.Component {
     }
   }
   render() {
-    // change code below this line
+    // Change code below this line
     const name = this.state.name;
-    // change code above this line
+    // Change code above this line
     return (
       <div>
-        { /* change code below this line */ }
+        { /* Change code below this line */ }
         <h1>{name}</h1>
-        { /* change code above this line */ }
+        { /* Change code above this line */ }
       </div>
     );
   }
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/render-state-in-the-user-interface.english.md b/curriculum/challenges/english/03-front-end-libraries/react/render-state-in-the-user-interface.english.md
index 4160df69fa6..e8339d070e0 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/render-state-in-the-user-interface.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/render-state-in-the-user-interface.english.md
@@ -53,9 +53,9 @@ class MyComponent extends React.Component {
   render() {
     return (
       <div>
-        { /* change code below this line */ }
+        { /* Change code below this line */ }
 
-        { /* change code above this line */ }
+        { /* Change code above this line */ }
       </div>
     );
   }
@@ -91,9 +91,9 @@ class MyComponent extends React.Component {
   render() {
     return (
       <div>
-        { /* change code below this line */ }
+        { /* Change code below this line */ }
         <h1>{this.state.name}</h1>
-        { /* change code above this line */ }
+        { /* Change code above this line */ }
       </div>
     );
   }
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/render-with-an-if-else-condition.english.md b/curriculum/challenges/english/03-front-end-libraries/react/render-with-an-if-else-condition.english.md
index 096c87d87bd..b38b143b9fb 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/render-with-an-if-else-condition.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/render-with-an-if-else-condition.english.md
@@ -55,7 +55,7 @@ class MyComponent extends React.Component {
     }));
   }
   render() {
-    // change code below this line
+    // Change code below this line
 
     return (
        <div>
@@ -100,7 +100,7 @@ class MyComponent extends React.Component {
     }));
   }
   render() {
-    // change code below this line
+    // Change code below this line
     if (this.state.display) {
       return (
          <div>
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/review-using-props-with-stateless-functional-components.english.md b/curriculum/challenges/english/03-front-end-libraries/react/review-using-props-with-stateless-functional-components.english.md
index 434d099fcd5..541b44201eb 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/review-using-props-with-stateless-functional-components.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/review-using-props-with-stateless-functional-components.english.md
@@ -56,7 +56,7 @@ class CampSite extends React.Component {
     );
   }
 };
-// change code below this line
+// Change code below this line
 
 ```
 
@@ -101,7 +101,7 @@ class CampSite extends React.Component {
     );
   }
 };
-// change code below this line
+// Change code below this line
 
 const Camper = (props) => {
    return (
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/set-state-with-this.setstate.english.md b/curriculum/challenges/english/03-front-end-libraries/react/set-state-with-this.setstate.english.md
index fae909c0d9b..96d3e8c6bf8 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/set-state-with-this.setstate.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/set-state-with-this.setstate.english.md
@@ -58,9 +58,9 @@ class MyComponent extends React.Component {
     this.handleClick = this.handleClick.bind(this);
   }
   handleClick() {
-    // change code below this line
+    // Change code below this line
 
-    // change code above this line
+    // Change code above this line
   }
   render() {
     return (
@@ -101,11 +101,11 @@ class MyComponent extends React.Component {
     this.handleClick = this.handleClick.bind(this);
   }
   handleClick() {
-     // change code below this line
+     // Change code below this line
     this.setState({
       name: 'React Rocks!'
     });
-    // change code above this line
+    // Change code above this line
   }
   render() {
     return (
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/use--for-a-more-concise-conditional.english.md b/curriculum/challenges/english/03-front-end-libraries/react/use--for-a-more-concise-conditional.english.md
index 4f82ee2bb52..9cd142b0f6f 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/use--for-a-more-concise-conditional.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/use--for-a-more-concise-conditional.english.md
@@ -56,7 +56,7 @@ class MyComponent extends React.Component {
     }));
   }
   render() {
-    // change code below this line
+    // Change code below this line
     return (
        <div>
          <button onClick={this.toggleDisplay}>Toggle Display</button>
@@ -100,7 +100,7 @@ class MyComponent extends React.Component {
     }));
   }
   render() {
-    // change code below this line
+    // Change code below this line
     return (
        <div>
          <button onClick={this.toggleDisplay}>Toggle Display</button>
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/use-a-ternary-expression-for-conditional-rendering.english.md b/curriculum/challenges/english/03-front-end-libraries/react/use-a-ternary-expression-for-conditional-rendering.english.md
index 5f4cb77b2f0..b63906ffd66 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/use-a-ternary-expression-for-conditional-rendering.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/use-a-ternary-expression-for-conditional-rendering.english.md
@@ -154,9 +154,9 @@ const inputStyle = {
 class CheckUserAge extends React.Component {
   constructor(props) {
     super(props);
-    // change code below this line
+    // Change code below this line
 
-    // change code above this line
+    // Change code above this line
     this.submit = this.submit.bind(this);
     this.handleChange = this.handleChange.bind(this);
   }
@@ -185,7 +185,9 @@ class CheckUserAge extends React.Component {
           onChange={this.handleChange}
         />
         <br />
-        {/* change code here */}
+        {/* Change code below this line */}
+
+        {/* Change code above this line */}
       </div>
     );
   }
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/use-advanced-javascript-in-react-render-method.english.md b/curriculum/challenges/english/03-front-end-libraries/react/use-advanced-javascript-in-react-render-method.english.md
index e8ac73694fd..21c80f68296 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/use-advanced-javascript-in-react-render-method.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/use-advanced-javascript-in-react-render-method.english.md
@@ -175,7 +175,7 @@ class MagicEightBall extends React.Component {
       'Outlook not so good',
       'Very doubtful'
     ];
-    const answer = 'change me!'; // << change code here
+    const answer = 'change me!'; // Change this line
     return (
       <div>
         <input
@@ -189,9 +189,9 @@ class MagicEightBall extends React.Component {
         <br />
         <h3>Answer:</h3>
         <p>
-          {/* change code below this line */}
+          {/* Change code below this line */}
 
-          {/* change code above this line */}
+          {/* Change code above this line */}
         </p>
       </div>
     );
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/use-array.filter-to-dynamically-filter-an-array.english.md b/curriculum/challenges/english/03-front-end-libraries/react/use-array.filter-to-dynamically-filter-an-array.english.md
index d49fa0f6919..117bedba6e1 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/use-array.filter-to-dynamically-filter-an-array.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/use-array.filter-to-dynamically-filter-an-array.english.md
@@ -139,8 +139,8 @@ class MyComponent extends React.Component {
     };
   }
   render() {
-    const usersOnline = null; // change code here
-    const renderOnline = null; // change code here
+    const usersOnline = null; // Change this line
+    const renderOnline = null; // Change this line
     return (
       <div>
         <h1>Current Online Users:</h1>
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/use-array.map-to-dynamically-render-elements.english.md b/curriculum/challenges/english/03-front-end-libraries/react/use-array.map-to-dynamically-render-elements.english.md
index d7528591a45..aeb5883cd9e 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/use-array.map-to-dynamically-render-elements.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/use-array.map-to-dynamically-render-elements.english.md
@@ -109,9 +109,9 @@ const textAreaStyles = {
 class MyToDoList extends React.Component {
   constructor(props) {
     super(props);
-    // change code below this line
+    // Change code below this line
 
-    // change code above this line
+    // Change code above this line
     this.handleSubmit = this.handleSubmit.bind(this);
     this.handleChange = this.handleChange.bind(this);
   }
@@ -127,7 +127,7 @@ class MyToDoList extends React.Component {
     });
   }
   render() {
-    const items = null; // change code here
+    const items = null; // Change this line
     return (
       <div>
         <textarea
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/use-default-props.english.md b/curriculum/challenges/english/03-front-end-libraries/react/use-default-props.english.md
index c5f404a1450..4e1dff52c48 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/use-default-props.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/use-default-props.english.md
@@ -43,7 +43,7 @@ const ShoppingCart = (props) => {
     </div>
   )
 };
-// change code below this line
+// Change code below this line
 
 ```
 
@@ -74,7 +74,7 @@ const ShoppingCart = (props) => {
   )
 };
 
-// change code below this line
+// Change code below this line
 ShoppingCart.defaultProps = {
   items: 0
 }
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/use-proptypes-to-define-the-props-you-expect.english.md b/curriculum/challenges/english/03-front-end-libraries/react/use-proptypes-to-define-the-props-you-expect.english.md
index d95c26a3fa4..30a91a9da31 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/use-proptypes-to-define-the-props-you-expect.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/use-proptypes-to-define-the-props-you-expect.english.md
@@ -49,9 +49,9 @@ const Items = (props) => {
   return <h1>Current Quantity of Items in Cart: {props.quantity}</h1>
 };
 
-// change code below this line
+// Change code below this line
 
-// change code above this line
+// Change code above this line
 
 Items.defaultProps = {
   quantity: 0
@@ -101,11 +101,11 @@ const Items = (props) => {
   return <h1>Current Quantity of Items in Cart: {props.quantity}</h1>
 };
 
-// change code below this line
+// Change code below this line
 Items.propTypes = {
   quantity: PropTypes.number.isRequired
 };
-// change code above this line
+// Change code above this line
 
 Items.defaultProps = {
   quantity: 0
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/use-react-to-render-nested-components.english.md b/curriculum/challenges/english/03-front-end-libraries/react/use-react-to-render-nested-components.english.md
index b935e639cbf..83521b92b84 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/use-react-to-render-nested-components.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/use-react-to-render-nested-components.english.md
@@ -58,9 +58,9 @@ const TypesOfFruit = () => {
 const Fruits = () => {
   return (
     <div>
-      { /* change code below this line */ }
+      { /* Change code below this line */ }
 
-      { /* change code above this line */ }
+      { /* Change code above this line */ }
     </div>
   );
 };
@@ -74,9 +74,9 @@ class TypesOfFood extends React.Component {
     return (
       <div>
         <h1>Types of Food:</h1>
-        { /* change code below this line */ }
+        { /* Change code below this line */ }
 
-        { /* change code above this line */ }
+        { /* Change code above this line */ }
       </div>
     );
   }
@@ -119,9 +119,9 @@ const TypesOfFruit = () => {
 const Fruits = () => {
   return (
     <div>
-      { /* change code below this line */ }
+      { /* Change code below this line */ }
         <TypesOfFruit />
-      { /* change code above this line */ }
+      { /* Change code above this line */ }
     </div>
   );
 };
@@ -135,9 +135,9 @@ class TypesOfFood extends React.Component {
     return (
       <div>
         <h1>Types of Food:</h1>
-        { /* change code below this line */ }
+        { /* Change code below this line */ }
         <Fruits />
-        { /* change code above this line */ }
+        { /* Change code above this line */ }
       </div>
     );
   }
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/use-state-to-toggle-an-element.english.md b/curriculum/challenges/english/03-front-end-libraries/react/use-state-to-toggle-an-element.english.md
index d99ba593358..08109c30174 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/use-state-to-toggle-an-element.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/use-state-to-toggle-an-element.english.md
@@ -97,13 +97,13 @@ class MyComponent extends React.Component {
     this.state = {
       visibility: false
     };
-    // change code below this line
+    // Change code below this line
 
-    // change code above this line
+    // Change code above this line
   }
-  // change code below this line
+  // Change code below this line
 
-  // change code above this line
+  // Change code above this line
   render() {
     if (this.state.visibility) {
       return (
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/use-the-lifecycle-method-componentdidmount.english.md b/curriculum/challenges/english/03-front-end-libraries/react/use-the-lifecycle-method-componentdidmount.english.md
index 1e86dd0aa17..b24877f80b5 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/use-the-lifecycle-method-componentdidmount.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/use-the-lifecycle-method-componentdidmount.english.md
@@ -16,7 +16,7 @@ The best practice with React is to place API calls or any calls to your server i
 ## Instructions
 
 <section id='instructions'>
-There is a mock API call in <code>componentDidMount()</code>. It sets state after 2.5 seconds to simulate calling a server to retrieve data. This example requests the current total active users for a site. In the render method, render the value of <code>activeUsers</code> in the <code>h1</code>. Watch what happens in the preview, and feel free to change the timeout to see the different effects.
+There is a mock API call in <code>componentDidMount()</code>. It sets state after 2.5 seconds to simulate calling a server to retrieve data. This example requests the current total active users for a site. In the render method, render the value of <code>activeUsers</code> in the <code>h1</code> after the text <code>Active Users: </code>. Watch what happens in the preview, and feel free to change the timeout to see the different effects.
 </section>
 
 ## Tests
@@ -71,7 +71,9 @@ class MyComponent extends React.Component {
   render() {
     return (
       <div>
-        <h1>Active Users: {/* change code here */}</h1>
+        {/* Change code below this line */}
+        <h1>Active Users: </h1>
+        {/* Change code below this line */}
       </div>
     );
   }
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/use-the-lifecycle-method-componentwillmount.english.md b/curriculum/challenges/english/03-front-end-libraries/react/use-the-lifecycle-method-componentwillmount.english.md
index fd8746556bf..ed8c1f21634 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/use-the-lifecycle-method-componentwillmount.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/use-the-lifecycle-method-componentwillmount.english.md
@@ -52,9 +52,9 @@ class MyComponent extends React.Component {
     super(props);
   }
   componentWillMount() {
-    // change code below this line
+    // Change code below this line
 
-    // change code above this line
+    // Change code above this line
   }
   render() {
     return <div />
@@ -86,9 +86,9 @@ class MyComponent extends React.Component {
     super(props);
   }
   componentWillMount() {
-    // change code below this line
+    // Change code below this line
     console.log('Component is mounting...');
-    // change code above this line
+    // Change code above this line
   }
   render() {
     return <div />
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/write-a-react-component-from-scratch.english.md b/curriculum/challenges/english/03-front-end-libraries/react/write-a-react-component-from-scratch.english.md
index 56849094bfb..517fe3f053b 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/write-a-react-component-from-scratch.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/write-a-react-component-from-scratch.english.md
@@ -40,7 +40,7 @@ tests:
 <div id='jsx-seed'>
 
 ```jsx
-// change code below this line
+// Change code below this line
 
 ```
 
@@ -55,7 +55,7 @@ tests:
 
 
 ```js
-// change code below this line
+// Change code below this line
 class MyComponent extends React.Component {
   constructor(props) {
     super(props);
diff --git a/curriculum/challenges/english/03-front-end-libraries/react/write-a-simple-counter.english.md b/curriculum/challenges/english/03-front-end-libraries/react/write-a-simple-counter.english.md
index 4ea045bed96..1358e30fedf 100644
--- a/curriculum/challenges/english/03-front-end-libraries/react/write-a-simple-counter.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/react/write-a-simple-counter.english.md
@@ -49,13 +49,13 @@ class Counter extends React.Component {
     this.state = {
       count: 0
     };
-    // change code below this line
+    // Change code below this line
 
-    // change code above this line
+    // Change code above this line
   }
-  // change code below this line
+  // Change code below this line
 
-  // change code above this line
+  // Change code above this line
   render() {
     return (
       <div>
diff --git a/curriculum/challenges/english/03-front-end-libraries/redux/combine-multiple-reducers.english.md b/curriculum/challenges/english/03-front-end-libraries/redux/combine-multiple-reducers.english.md
index 092c6bb3907..d0adaefed4c 100644
--- a/curriculum/challenges/english/03-front-end-libraries/redux/combine-multiple-reducers.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/redux/combine-multiple-reducers.english.md
@@ -83,7 +83,7 @@ const authReducer = (state = {authenticated: false}, action) => {
   }
 };
 
-const rootReducer = // define the root reducer here
+const rootReducer = // Define the root reducer here
 
 const store = Redux.createStore(rootReducer);
 
diff --git a/curriculum/challenges/english/03-front-end-libraries/redux/copy-an-object-with-object.assign.english.md b/curriculum/challenges/english/03-front-end-libraries/redux/copy-an-object-with-object.assign.english.md
index 0dc72b07331..3432b1efefa 100644
--- a/curriculum/challenges/english/03-front-end-libraries/redux/copy-an-object-with-object.assign.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/redux/copy-an-object-with-object.assign.english.md
@@ -52,7 +52,7 @@ const defaultState = {
 const immutableReducer = (state = defaultState, action) => {
   switch(action.type) {
     case 'ONLINE':
-      // don't mutate state here or the tests will fail
+      // Don't mutate state here or the tests will fail
       return
     default:
       return state;
diff --git a/curriculum/challenges/english/03-front-end-libraries/redux/create-a-redux-store.english.md b/curriculum/challenges/english/03-front-end-libraries/redux/create-a-redux-store.english.md
index 5b1b8bc9bd3..f8eec127816 100644
--- a/curriculum/challenges/english/03-front-end-libraries/redux/create-a-redux-store.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/redux/create-a-redux-store.english.md
@@ -48,7 +48,6 @@ const reducer = (state = 5) => {
 // For example: Redux.createStore()
 // Define the store here:
 
-
 ```
 
 </div>
@@ -66,10 +65,6 @@ const reducer = (state = 5) => {
   return state;
 }
 
-// Redux methods are available from a Redux object
-// For example: Redux.createStore()
-// Define the store here:
-
 const store = Redux.createStore(reducer);
 ```
 
diff --git a/curriculum/challenges/english/03-front-end-libraries/redux/define-an-action-creator.english.md b/curriculum/challenges/english/03-front-end-libraries/redux/define-an-action-creator.english.md
index 9ac5390a951..093c95e9d55 100644
--- a/curriculum/challenges/english/03-front-end-libraries/redux/define-an-action-creator.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/redux/define-an-action-creator.english.md
@@ -59,7 +59,6 @@ const action = {
 const action = {
   type: 'LOGIN'
 }
-// Define an action creator here:
 const actionCreator = () => {
   return action;
 };
diff --git a/curriculum/challenges/english/03-front-end-libraries/redux/dispatch-an-action-event.english.md b/curriculum/challenges/english/03-front-end-libraries/redux/dispatch-an-action-event.english.md
index b79cf5d9f09..ca4294bb419 100644
--- a/curriculum/challenges/english/03-front-end-libraries/redux/dispatch-an-action-event.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/redux/dispatch-an-action-event.english.md
@@ -80,7 +80,6 @@ const loginAction = () => {
   }
 };
 
-// Dispatch the action here:
 store.dispatch(loginAction());
 ```
 
diff --git a/curriculum/challenges/english/03-front-end-libraries/redux/get-state-from-the-redux-store.english.md b/curriculum/challenges/english/03-front-end-libraries/redux/get-state-from-the-redux-store.english.md
index 6c5a0a4494d..32b9839f994 100644
--- a/curriculum/challenges/english/03-front-end-libraries/redux/get-state-from-the-redux-store.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/redux/get-state-from-the-redux-store.english.md
@@ -40,7 +40,7 @@ const store = Redux.createStore(
   (state = 5) => state
 );
 
-// change code below this line
+// Change code below this line
 
 ```
 
@@ -59,7 +59,7 @@ const store = Redux.createStore(
   (state = 5) => state
 );
 
-// change code below this line
+// Change code below this line
 const currentState = store.getState();
 ```
 
diff --git a/curriculum/challenges/english/03-front-end-libraries/redux/handle-an-action-in-the-store.english.md b/curriculum/challenges/english/03-front-end-libraries/redux/handle-an-action-in-the-store.english.md
index e52506c01d9..6bb5ce68e4a 100644
--- a/curriculum/challenges/english/03-front-end-libraries/redux/handle-an-action-in-the-store.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/redux/handle-an-action-in-the-store.english.md
@@ -46,9 +46,9 @@ const defaultState = {
 };
 
 const reducer = (state = defaultState, action) => {
-  // change code below this line
+  // Change code below this line
 
-  // change code above this line
+  // Change code above this line
 };
 
 const store = Redux.createStore(reducer);
diff --git a/curriculum/challenges/english/03-front-end-libraries/redux/never-mutate-state.english.md b/curriculum/challenges/english/03-front-end-libraries/redux/never-mutate-state.english.md
index 0985cb212db..9536c6677e2 100644
--- a/curriculum/challenges/english/03-front-end-libraries/redux/never-mutate-state.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/redux/never-mutate-state.english.md
@@ -53,14 +53,13 @@ const todos = [
 const immutableReducer = (state = todos, action) => {
   switch(action.type) {
     case ADD_TO_DO:
-      // don't mutate state here or the tests will fail
+      // Don't mutate state here or the tests will fail
       return
     default:
       return state;
   }
 };
 
-// an example todo argument would be 'Learn React',
 const addToDo = (todo) => {
   return {
     type: ADD_TO_DO,
@@ -84,7 +83,6 @@ const store = Redux.createStore(immutableReducer);
 ```js
 const ADD_TO_DO = 'ADD_TO_DO';
 
-// A list of strings representing tasks to do:
 const todos = [
   'Go to the store',
   'Clean the house',
@@ -101,7 +99,6 @@ const immutableReducer = (state = todos, action) => {
   }
 };
 
-// an example todo argument would be 'Learn React',
 const addToDo = (todo) => {
   return {
     type: ADD_TO_DO,
diff --git a/curriculum/challenges/english/03-front-end-libraries/redux/register-a-store-listener.english.md b/curriculum/challenges/english/03-front-end-libraries/redux/register-a-store-listener.english.md
index 7ed3ce2d13c..1e96ff2fbdd 100644
--- a/curriculum/challenges/english/03-front-end-libraries/redux/register-a-store-listener.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/redux/register-a-store-listener.english.md
@@ -51,12 +51,12 @@ const reducer = (state = 0, action) => {
 
 const store = Redux.createStore(reducer);
 
-// global count variable:
+// Global count variable:
 let count = 0;
 
-// change code below this line
+// Change code below this line
 
-// change code above this line
+// Change code above this line
 
 store.dispatch({type: ADD});
 console.log(count);
@@ -98,7 +98,7 @@ const reducer = (state = 0, action) => {
 
 const store = Redux.createStore(reducer);
  let count = 0;
-// change code below this line
+// Change code below this line
 
 store.subscribe( () =>
  {
@@ -106,7 +106,7 @@ store.subscribe( () =>
  }
 );
 
-// change code above this line
+// Change code above this line
 
 store.dispatch({type: ADD});
 store.dispatch({type: ADD});
diff --git a/curriculum/challenges/english/03-front-end-libraries/redux/remove-an-item-from-an-array.english.md b/curriculum/challenges/english/03-front-end-libraries/redux/remove-an-item-from-an-array.english.md
index fe934790348..a19ccd92c33 100644
--- a/curriculum/challenges/english/03-front-end-libraries/redux/remove-an-item-from-an-array.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/redux/remove-an-item-from-an-array.english.md
@@ -41,7 +41,7 @@ tests:
 const immutableReducer = (state = [0,1,2,3,4,5], action) => {
   switch(action.type) {
     case 'REMOVE_ITEM':
-      // don't mutate state here or the tests will fail
+      // Don't mutate state here or the tests will fail
       return
     default:
       return state;
diff --git a/curriculum/challenges/english/03-front-end-libraries/redux/send-action-data-to-the-store.english.md b/curriculum/challenges/english/03-front-end-libraries/redux/send-action-data-to-the-store.english.md
index 238a12e5f92..95dc7151734 100644
--- a/curriculum/challenges/english/03-front-end-libraries/redux/send-action-data-to-the-store.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/redux/send-action-data-to-the-store.english.md
@@ -42,18 +42,18 @@ const ADD_NOTE = 'ADD_NOTE';
 
 const notesReducer = (state = 'Initial State', action) => {
   switch(action.type) {
-    // change code below this line
+    // Change code below this line
 
-    // change code above this line
+    // Change code above this line
     default:
       return state;
   }
 };
 
 const addNoteText = (note) => {
-  // change code below this line
+  // Change code below this line
 
-  // change code above this line
+  // Change code above this line
 };
 
 const store = Redux.createStore(notesReducer);
@@ -78,22 +78,22 @@ const ADD_NOTE = 'ADD_NOTE';
 
 const notesReducer = (state = 'Initial State', action) => {
   switch(action.type) {
-    // change code below this line
+    // Change code below this line
     case ADD_NOTE:
       return action.text;
-    // change code above this line
+    // Change code above this line
     default:
       return state;
   }
 };
 
 const addNoteText = (note) => {
-  // change code below this line
+  // Change code below this line
   return {
     type: ADD_NOTE,
     text: note
   }
-  // change code above this line
+  // Change code above this line
 };
 
 const store = Redux.createStore(notesReducer);
diff --git a/curriculum/challenges/english/03-front-end-libraries/redux/use-a-switch-statement-to-handle-multiple-actions.english.md b/curriculum/challenges/english/03-front-end-libraries/redux/use-a-switch-statement-to-handle-multiple-actions.english.md
index 690df9e2f6e..6656c8b10d5 100644
--- a/curriculum/challenges/english/03-front-end-libraries/redux/use-a-switch-statement-to-handle-multiple-actions.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/redux/use-a-switch-statement-to-handle-multiple-actions.english.md
@@ -50,9 +50,9 @@ const defaultState = {
 };
 
 const authReducer = (state = defaultState, action) => {
-  // change code below this line
+  // Change code below this line
 
-  // change code above this line
+  // Change code above this line
 };
 
 const store = Redux.createStore(authReducer);
diff --git a/curriculum/challenges/english/03-front-end-libraries/redux/use-const-for-action-types.english.md b/curriculum/challenges/english/03-front-end-libraries/redux/use-const-for-action-types.english.md
index c105bc0b701..e450b168721 100644
--- a/curriculum/challenges/english/03-front-end-libraries/redux/use-const-for-action-types.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/redux/use-const-for-action-types.english.md
@@ -49,9 +49,9 @@ tests:
 <div id='jsx-seed'>
 
 ```jsx
-// change code below this line
+// Change code below this line
 
-// change code above this line
+// Change code above this line
 
 const defaultState = {
   authenticated: false
diff --git a/curriculum/challenges/english/03-front-end-libraries/redux/use-middleware-to-handle-asynchronous-actions.english.md b/curriculum/challenges/english/03-front-end-libraries/redux/use-middleware-to-handle-asynchronous-actions.english.md
index ed5f26d1fc7..a6bac902420 100644
--- a/curriculum/challenges/english/03-front-end-libraries/redux/use-middleware-to-handle-asynchronous-actions.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/redux/use-middleware-to-handle-asynchronous-actions.english.md
@@ -53,13 +53,13 @@ const receivedData = (data) => { return {type: RECEIVED_DATA, users: data.users}
 
 const handleAsync = () => {
   return function(dispatch) {
-    // dispatch request action here
+    // Dispatch request action here
 
     setTimeout(function() {
       let data = {
         users: ['Jeff', 'William', 'Alice']
       }
-      // dispatch received data action here
+      // Dispatch received data action here
 
     }, 2500);
   }
diff --git a/curriculum/challenges/english/03-front-end-libraries/redux/use-the-spread-operator-on-arrays.english.md b/curriculum/challenges/english/03-front-end-libraries/redux/use-the-spread-operator-on-arrays.english.md
index 098f7887a66..30620cab915 100644
--- a/curriculum/challenges/english/03-front-end-libraries/redux/use-the-spread-operator-on-arrays.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/redux/use-the-spread-operator-on-arrays.english.md
@@ -45,7 +45,7 @@ tests:
 const immutableReducer = (state = ['Do not mutate state!'], action) => {
   switch(action.type) {
     case 'ADD_TO_DO':
-      // don't mutate state here or the tests will fail
+      // Don't mutate state here or the tests will fail
       return
     default:
       return state;
diff --git a/curriculum/challenges/english/03-front-end-libraries/redux/write-a-counter-with-redux.english.md b/curriculum/challenges/english/03-front-end-libraries/redux/write-a-counter-with-redux.english.md
index 77825c413b9..1c653c1a7a0 100644
--- a/curriculum/challenges/english/03-front-end-libraries/redux/write-a-counter-with-redux.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/redux/write-a-counter-with-redux.english.md
@@ -44,16 +44,16 @@ tests:
 <div id='jsx-seed'>
 
 ```jsx
-const INCREMENT = null; // define a constant for increment action types
-const DECREMENT = null; // define a constant for decrement action types
+const INCREMENT = null; // Define a constant for increment action types
+const DECREMENT = null; // Define a constant for decrement action types
 
-const counterReducer = null; // define the counter reducer which will increment or decrement the state based on the action it receives
+const counterReducer = null; // Define the counter reducer which will increment or decrement the state based on the action it receives
 
-const incAction = null; // define an action creator for incrementing
+const incAction = null; // Define an action creator for incrementing
 
-const decAction = null; // define an action creator for decrementing
+const decAction = null; // Define an action creator for decrementing
 
-const store = null; // define the Redux store here, passing in your reducers
+const store = null; // Define the Redux store here, passing in your reducers
 ```
 
 </div>