I'm confused by the way Engage NY introduces the distributive property by multiplying polynomials.
This page came from Engage NY. I really liked the concept of flow chart proofs and the students took to it pretty well.
I got this sorting activity from here and I really adore the neither column. It had some subtle differences that students had to look twice at.
Using perimeter is one of my favorite ways to practice adding polynomials.
Another sort (my favorite!) from here, but maybe not the best idea since students can just multiply the first two terms and figure it out. This was at the end of a lot of practice so I already felt confident that students knew the process.
Here are the files: