Just like you,  I am learning what works and doesn't work in Canvas.  Here are some updates:

1 - Use Think Central for Personal Math Trainer - no more links will be posted in Canvas for it

2 - When you need to type an answer, look for the submit button on the top right hand side - click and a box for typing will open for you. When you are done and submit it, it sends it to me.

3 - Stemscopes quizzes do not work in Canvas unless you have already logged into it in Clever

4 - Log into Clever each morning and when you finish your work, you need to log out 

Thanks for all you are doing!  If you want to meet - email me! I will set up a live meeting with you.