diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6406bb32f9ed593f26c33b2b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6406bb32f9ed593f26c33b2b.md
index d55ad368d88..ead0ce212f6 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6406bb32f9ed593f26c33b2b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-algorithmic-thinking-by-building-a-number-sorter/6406bb32f9ed593f26c33b2b.md
@@ -7,7 +7,7 @@ dashedName: step-6
 
 # --description--
 
-Remember that `.getElementsByClassName()` returns an array-like object. You can use the spread operator to convert it into an array.
+Remember that `.getElementsByClassName()` method returns an <dfn>HTMLCollection</dfn>, which is an array-like object of all the elements that have a matching class name. You can use the spread operator to convert it into an array.
 
 Convert the `document.getElementsByClassName()` call to an array with the spread operator and assign it to a variable called `inputValues`.