What better way to introduce counting, patterning and simple addition than with our hands-on boards and clips that build early math skills—in a snap! Children simply grab a preprinted activity board, then attach the clips to match numbers to quantities, complete colorful patterns and more! Complete set includes all 3 centers shown, each with 20 durable plastic boards and 60-72 plastic clips. Boards measure 1 5/8" x 5 1/2". Each center also available separately.