Great for grades 2-4, this durable dry erase card set is an engaging math activity that helps students learn fact families and practice multiplication and division. Designed to look like a watermelon slice, each dry erase card features a fact family. Add this to your math center as a fun activity students can work on individually, with a partner or as group. Stored in a sturdy 5 1/2" storage box. Laminated cardstock. (56 pcs. per unit) 5"