Children sort, count, pattern, graph and compare—with skill-building trays that are perfect for use with our Math Counters! Each tray features handy, molded compartments that fit any of the counters on this page. Children just place the counters right into the trays to explore concepts hands on…and easily keep the pieces in place as they work! Complete set includes all 5 sturdy plastic trays shown; each is a big 10 3/4" x 14 1/4". Trays only. Counters are sold separately.