Here are some "How to..." videos that may help you with logging in to the websites.
How to log in to Google Classroom
How to log in to Google Classroom
Xtramath.webmHow to log in to XtraMath
How to log in to XtraMath
IXL.webmHow to log in to IXL Math
How to log in to IXL Math
Ab.mathgames.com - How to.webmHow to log in to ab.mathgames.ca
How to log in to ab.mathgames.ca
Epic - How to.webmHow to log in to GETEPIC! (reading)
How to log in to GETEPIC! (reading)
How to add Screencastify to Google Chrome
How to add Screencastify to Google Chrome