The Melissa & Doug Self-Correcting Number Puzzles set includes 40 wooden pieces featuring numbers one through 20, each paired with corresponding illustrated objects. Designed for children ages 4 and up, this educational puzzle helps develop matching and counting skills. The set comes with a wooden storage box featuring a slide-in lid for easy organization. Suitable as a gift for children ages 4 to 6, it complements other hands-on learning tools like the Melissa & Doug 200 Wood Block Set. Melissa & Doug has been producing educational toys for over 30 years, recognized for fostering creativity and imagination in early childhood development.