With this set, your children will learn counting, matching, sorting, patterning, addition, subtraction, imagination, language development, fine motor skills, and hand-eye coordination. The Counting Dino-Sorters Math Activity Set is a fun way for children to learn about counting and colors while they play hide-and-seek! These little dinos tuck away inside the eggs for surprise counting fun. Each numbered and colored egg holds a corresponding number of dinos inside, so children learn about number correspondence too! Eggs measure 3"H. Ages: 3+.