diff --git a/curriculum/challenges/english/25-front-end-development/workshop-cat-photo-app/66984eef66cc1752d93b53f5.md b/curriculum/challenges/english/25-front-end-development/workshop-cat-photo-app/66984eef66cc1752d93b53f5.md
index 5a8920ffa38..c08f5f27fb5 100644
--- a/curriculum/challenges/english/25-front-end-development/workshop-cat-photo-app/66984eef66cc1752d93b53f5.md
+++ b/curriculum/challenges/english/25-front-end-development/workshop-cat-photo-app/66984eef66cc1752d93b53f5.md
@@ -18,26 +18,27 @@ Add a `head` element above the `body` element.
 You have either deleted the `body` element or it is missing an opening tag or closing tag.
 
 ```js
-assert(document.querySelector('body') && code.match(/<\/body>/));
+assert.exists(document.querySelector('body'));
+assert.match(code, /<\/body>/);
 ```
 
 Your `head` element should have an opening tag. Opening tags have the following syntax: `<elementName>`.
 
 ```js
-assert(code.match(/\<head\>/));
+assert.match(code, /\<head\>/);
 ```
 
 Your `head` element should have a closing tag. Closing tags have a `/` just after the `<` character.
 
 ```js
-assert(code.match(/\<\/head\>/));
+assert.match(code, /\<\/head\>/);
 ```
 
 Your `head` element should be above the opening `body` element tag. You have put it somewhere else.
 
 ```js
 const noSpaces = code.replace(/\s/g, '');
-assert(noSpaces.match(/\<\/head\>\<body\>/));
+assert.match(noSpaces, /\<\/head\>\<body\>/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/25-front-end-development/workshop-cat-photo-app/66984fe8efbd8c53a78c9b62.md b/curriculum/challenges/english/25-front-end-development/workshop-cat-photo-app/66984fe8efbd8c53a78c9b62.md
index e6fd86e8651..e3b1f5a190f 100644
--- a/curriculum/challenges/english/25-front-end-development/workshop-cat-photo-app/66984fe8efbd8c53a78c9b62.md
+++ b/curriculum/challenges/english/25-front-end-development/workshop-cat-photo-app/66984fe8efbd8c53a78c9b62.md
@@ -18,26 +18,27 @@ Add a `title` element within the `head` element using the text below:
 You have either deleted the `head` element or it is missing an opening tag or closing tag.
 
 ```js
-assert(code.match(/\<head\>/) && code.match(/\<\/head\>/));
+assert.match(code, /\<head\>/);
+assert.match(code, /\<\/head\>/);
 ```
 
 Your `title` element should be nested in the `head` element. Make sure to add an opening tag and closing tag for the `title` element.
 
 ```js
 const noSpaces = code.replace(/\s/g, '');
-assert(noSpaces.match(/\<head\>\<title\>.*\<\/title\>\<\/head\>/));
+assert.match(noSpaces, /\<head\>\<title\>.*\<\/title\>\<\/head\>/);
 ```
 
 Your `title` element should have a closing tag. Closing tags have a `/` just after the `<` character.
 
 ```js
-assert(code.match(/\<\/title\>/));
+assert.match(code, /\<\/title\>/);
 ```
 
 Your `title` element's text should be `CatPhotoApp`. You have either omitted the text or have a typo.
 
 ```js
-assert(document.title && document.title.toLowerCase() === 'catphotoapp');
+assert.equal(document.title?.toLowerCase(), 'catphotoapp');
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/25-front-end-development/workshop-cat-photo-app/66985068aeb06e54562df39e.md b/curriculum/challenges/english/25-front-end-development/workshop-cat-photo-app/66985068aeb06e54562df39e.md
index a4859f2ab36..0cf72b7c855 100644
--- a/curriculum/challenges/english/25-front-end-development/workshop-cat-photo-app/66985068aeb06e54562df39e.md
+++ b/curriculum/challenges/english/25-front-end-development/workshop-cat-photo-app/66985068aeb06e54562df39e.md
@@ -18,14 +18,15 @@ Add the `lang` attribute with the value `en` to the opening `html` tag to specif
 You have either deleted the `html` element or it is missing an opening tag or closing tag.
 
 ```js
-assert(code.match(/\<html.*?\>/) && code.match(/\<\/html\>/));
+assert.match(code, /\<html.*?\>/);
+assert.match(code, /\<\/html\>/);
 ```
 
 Your `html` element should have a `lang` attribute with the value `en`. You may have omitted the attribute/value, or have a typo.
 
 ```js
 const extraSpacesRemoved = code.replace(/\s+/g, " ");
-assert(extraSpacesRemoved.match(/\<html\s+lang\s*\=\s*("?|'?)en\1\s*\>/));
+assert.match(extraSpacesRemoved, /\<html\s+lang\s*\=\s*("?|'?)en\1\s*\>/);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/25-front-end-development/workshop-cat-photo-app/669850ce0ccf395511ff4254.md b/curriculum/challenges/english/25-front-end-development/workshop-cat-photo-app/669850ce0ccf395511ff4254.md
index dc0644b3b8b..64929f133c4 100644
--- a/curriculum/challenges/english/25-front-end-development/workshop-cat-photo-app/669850ce0ccf395511ff4254.md
+++ b/curriculum/challenges/english/25-front-end-development/workshop-cat-photo-app/669850ce0ccf395511ff4254.md
@@ -18,14 +18,14 @@ Add this declaration as the first line of the code.
 Your code should begin with the declaration `<!DOCTYPE html>`. You may have omitted the declaration, have a typo, or it is not the first line of code.
 
 ```js
-assert(code.match(/\<\s*!DOCTYPE\s+html\s*\>/));
+assert.match(code, /\<\s*!DOCTYPE\s+html\s*\>/);
 ```
 
 Your `<!DOCTYPE html>` must be located at the top of the document.
 
 ```js
 const noSpaces = code.replace(/\s/g, '');
-assert(noSpaces.match(/^\<\!DOCTYPEhtml\>\<html/));
+assert.match(noSpaces, /^\<\!DOCTYPEhtml\>\<html/);
 ```
 
 # --seed--