I created a three-point portfolio piece based on NYC's Grade 2 Go Math! It's for January, so it involves 2-digit subtraction with regrouping. There is a self-evaluation rubric at the bottom so students can take ownership over their education. If you choose to put this up on a bulletin board, check out my discounted task card.
I created this for my students to keep at home to help them with 2-digit subtraction with regrouping (borrowing). I suggested keeping it at home as many students have homework completed incorrectly, even though it's signed by an adult. I figured it would be good to give for both parents and students.