Copy the Iframe HTML listed below.
Go to Schoology
Make a Page
Go to Insert
Choose Image/Media
Choose from the web
Choose Media
Paste the HTML code
Click Insert
Click Create
Iframe HTML
<iframe style="width: 100%; height: 750px; overflow: hidden;" src="https://gmm.getmoremath.com/student.html" width="100" height="100" scrolling="no">iframes not supported</iframe>