Learn your ABC's and 123's with a chunky puzzle that has 2 sides. Featuring letters on one side and numbers on the other, learning to count and read is even more fun! Simple alphabet and numbers puzzle building helps toddlers and kids develop sorting skills, cognitive skills, hand-eye coordination, fine motor skills, and problem solving. These easy to build puzzles are most popular with little boys or girls ages 3 years and up. This preschool toy makes an ideal birthday idea!