Review this unit while playing The Grinch!!! Students will get in groups and get one task card at a time. If everyone in the group has the correct answers they get to add that many hearts to the grinch. Winner is the group that has given the grinch the most hearts.
I usually print grinches for how ever many groups I have and put them in sheet protectors. Then students can just place the hearts right in.
Students can check their answers using QR codes.