Learn about primary and secondary colors while developing early math skills with the Count to 100 Counting Cubes! You can practice your counting, sorting, stacking, and sequencing skills with each of the colored rows. Because there are 100 blocks, you can easily incorporate the set into other construction play scenarios and educational environments. Let your imagination and creative thinking skills take the lead! The set also includes 20 playing cards for guided entertainment. Compatible with other block sets in the Unit Plus series.