In my Foundations of Algebra 1 class, we open each day with a Visual Pattern. Thanks to Fawn @fawnpnguyen for making the site and thanks to Megan @Veganmathbeagle for submitting 120. It really made them think. Lots of different ways to see it. I have them at the #VNPS working. Only 3 out of 7 stayed with it. It took them about 25 minutes but one student got it! The other two realized where they went wrong. It made for great thinking and discussion. Thanks.
This is the problem in my powerpoint.
Here is some student work.