Adorable plastic bears in 3 sizes, 3 weights and 4 colors are just right for mass comparison, counting and sorting. Bears are proportionally weighted to use on a balance for measurement discoveries. The 80-piece Basic Set contains 20 Papa Bear, 20 Mama Bear and 40 Baby Bear Counters in 4 colors. Packaged in handy storage bucket. Grades PreK + . 80 Pieces.