"The Learning Teacher"

https://heidiallum.wordpress.com/2018/04/08/from-patterns-to-algebra-the-genius-of-dr-beatty-and-dr-bruce/

This looks useful!

http://passyworldofmathematics.com/balance-beam-equations/

http://www.visualpatterns.org/

another couple shared resource form my AG Prof.

Check it future math teachers!