diff --git a/client/src/templates/Challenges/classic/desktop-layout.tsx b/client/src/templates/Challenges/classic/desktop-layout.tsx
index b0552662e2c..3f11e7978de 100644
--- a/client/src/templates/Challenges/classic/desktop-layout.tsx
+++ b/client/src/templates/Challenges/classic/desktop-layout.tsx
@@ -98,7 +98,7 @@ const DesktopLayout = (props: DesktopLayoutProps): JSX.Element => {
 
   const [showNotes, setShowNotes] = useState(false);
   const [showConsole, setShowConsole] = useState(false);
-  const [showInstructions, setShowInstuctions] = useState(true);
+  const [showInstructions, setShowInstructions] = useState(true);
 
   const togglePane = (pane: string): void => {
     if (pane === 'showPreviewPane') {
@@ -122,9 +122,9 @@ const DesktopLayout = (props: DesktopLayoutProps): JSX.Element => {
     } else if (pane === 'showNotes') {
       setShowNotes(!showNotes);
     } else if (pane === 'showInstructions') {
-      setShowInstuctions(!showInstructions);
+      setShowInstructions(!showInstructions);
     } else {
-      setShowInstuctions(true);
+      setShowInstructions(true);
       setShowConsole(false);
       setShowPreviewPane(true);
       setShowPreviewPortal(false);
diff --git a/client/src/templates/Challenges/exam/show.tsx b/client/src/templates/Challenges/exam/show.tsx
index 740b5a233f9..8523a518253 100644
--- a/client/src/templates/Challenges/exam/show.tsx
+++ b/client/src/templates/Challenges/exam/show.tsx
@@ -355,15 +355,15 @@ class ShowExam extends Component<ShowExamProps, ShowExamState> {
       title: string;
     };
 
-    let missingPrequisites: Prerequisite[] = [];
+    let missingPrerequisites: Prerequisite[] = [];
     if (prerequisites) {
-      missingPrequisites = prerequisites?.filter(
+      missingPrerequisites = prerequisites?.filter(
         prerequisite =>
           !completedChallenges.find(({ id }) => prerequisite.id === id)
       );
     }
 
-    const qualifiedForExam = missingPrequisites.length === 0;
+    const qualifiedForExam = missingPrerequisites.length === 0;
 
     const blockNameTitle = `${t(
       `intro:${superBlock}.blocks.${block}.title`
@@ -539,7 +539,7 @@ class ShowExam extends Component<ShowExamProps, ShowExamState> {
                     <p>{t('learn.exam.not-qualified')}</p>
                     <Spacer size='small' />
                     <ul>
-                      {missingPrequisites.map(({ title, id }) => (
+                      {missingPrerequisites.map(({ title, id }) => (
                         <li key={id}>{title}</li>
                       ))}
                     </ul>
diff --git a/client/utils/gatsby/layout-selector.test.tsx b/client/utils/gatsby/layout-selector.test.tsx
index 3565e4cf4f7..82c7ce7b7f7 100644
--- a/client/utils/gatsby/layout-selector.test.tsx
+++ b/client/utils/gatsby/layout-selector.test.tsx
@@ -60,52 +60,52 @@ const challengePageContext = {
 test('Challenges should have DefaultLayout and no footer', () => {
   const challengePath =
     '/learn/responsive-web-design/basic-html-and-html5/say-hello-to-html-elements';
-  const compnentObj = getComponentNameAndProps(
+  const componentObj = getComponentNameAndProps(
     Learn,
     challengePath,
     challengePageContext
   );
-  expect(compnentObj.name).toEqual('DefaultLayout');
-  expect(compnentObj.props.showFooter).toEqual(false);
+  expect(componentObj.name).toEqual('DefaultLayout');
+  expect(componentObj.props.showFooter).toEqual(false);
 });
 
 test('SuperBlock path should have DefaultLayout and footer', () => {
   const superBlockPath = '/learn/responsive-web-design/';
-  const compnentObj = getComponentNameAndProps(Learn, superBlockPath);
-  expect(compnentObj.name).toEqual('DefaultLayout');
-  expect(compnentObj.props.showFooter).toEqual(true);
+  const componentObj = getComponentNameAndProps(Learn, superBlockPath);
+  expect(componentObj.name).toEqual('DefaultLayout');
+  expect(componentObj.props.showFooter).toEqual(true);
 });
 
 test('i18n challenge path should have DefaultLayout and no footer', () => {
   const challengePath =
     'espanol/learn/responsive-web-design/basic-html-and-html5/say-hello-to-html-elements/';
-  const compnentObj = getComponentNameAndProps(
+  const componentObj = getComponentNameAndProps(
     Learn,
     challengePath,
     challengePageContext
   );
-  expect(compnentObj.name).toEqual('DefaultLayout');
-  expect(compnentObj.props.showFooter).toEqual(false);
+  expect(componentObj.name).toEqual('DefaultLayout');
+  expect(componentObj.props.showFooter).toEqual(false);
 });
 
 test('i18n superBlock path should have DefaultLayout and footer', () => {
   const superBlockPath = '/learn/responsive-web-design/';
-  const compnentObj = getComponentNameAndProps(Learn, superBlockPath);
-  expect(compnentObj.name).toEqual('DefaultLayout');
-  expect(compnentObj.props.showFooter).toEqual(true);
+  const componentObj = getComponentNameAndProps(Learn, superBlockPath);
+  expect(componentObj.name).toEqual('DefaultLayout');
+  expect(componentObj.props.showFooter).toEqual(true);
 });
 
 test('404 page should have DefaultLayout and footer', () => {
   const challengePath =
     '/espanol/learn/responsive-web-design/basic-html-and-html5/say-hello-to-html-elements/';
-  const compnentObj = getComponentNameAndProps(FourOhFourPage, challengePath);
-  expect(compnentObj.name).toEqual('DefaultLayout');
-  expect(compnentObj.props.showFooter).toEqual(true);
+  const componentObj = getComponentNameAndProps(FourOhFourPage, challengePath);
+  expect(componentObj.name).toEqual('DefaultLayout');
+  expect(componentObj.props.showFooter).toEqual(true);
 });
 
 test('Certification path should have CertificationLayout', () => {
   const challengePath =
     '/certification/mot01/javascript-algorithms-and-data-structures/';
-  const compnentObj = getComponentNameAndProps(Certification, challengePath);
-  expect(compnentObj.name).toEqual('CertificationLayout');
+  const componentObj = getComponentNameAndProps(Certification, challengePath);
+  expect(componentObj.name).toEqual('CertificationLayout');
 });
diff --git a/tools/challenge-parser/parser/plugins/add-assignment.js b/tools/challenge-parser/parser/plugins/add-assignment.js
index 1f2ef25ff33..75cdcf9d6c5 100644
--- a/tools/challenge-parser/parser/plugins/add-assignment.js
+++ b/tools/challenge-parser/parser/plugins/add-assignment.js
@@ -7,9 +7,9 @@ function plugin() {
   return transformer;
 
   function transformer(tree, file) {
-    const assigmentNodes = getAllBetween(tree, '--assignment--');
+    const assignmentNodes = getAllBetween(tree, '--assignment--');
 
-    const assignment = getAssignments(assigmentNodes).filter(a => a != '');
+    const assignment = getAssignments(assignmentNodes).filter(a => a != '');
 
     file.data.assignments = assignment;
   }