Now it’s super-easy for students to visualize numbers and quantities—or practice making 10 and 20 using tons of number combinations! As kids stick the pieces together in formations, they’ll get plenty of practice counting, composing and decomposing numbers within 10 or 20. Plus, the pieces are color-coded by number—for super-easy organization and grouping! Set includes 65 magnetic foam pieces; longest measures 6 1/4". Board sold separately.