You do not necessarily need to purchase a specific curriculum for kindergarten math. To recognize shapes and practice matching, you can either use ready-made worksheets or workbooks, or make some of your own.
I have seen a lot of kids quickly pass off their 2’s, 5’s, and 10’s. These tables have an obvious pattern and are much easier to learn. Then there is a serious slow down as kids hit the 3’s, 4’s, and 6’s. By the time they get to the 7’s, 8’s, and 9’s they’ve decided that multiplication is way too hard, and math isn’t their thing.