This hands-on magnetic activity set is a fun addition to classroom supplies! Featuring 20 different basic math activities, this set is a smart way to teach students number sequencing, counting and adding. Excellent for keeping in a math center for children to use as an individual or partner activity, little learners can check their work on the included answer sheets for reinforcement. For use with the magnetic Kidboard™ (13762259), sold separately. Includes twenty 12-1/4" x 8-1/2" activity mats and forty-three 1" x 1 1/2" magnets. Cardstock and vinyl.