Everybody loves a challenge! Help children build confidence and achieve success with fun 3-piece puzzles that hone their skills at their own pace. Only matching pieces fit together, so kids can learn by trial and error. Details:15 two-sided, three-piece puzzles45 piecesDurable 3" x 3" piecesPractice additionPhotos on front, numbers on backPhotos for real life learningSturdy storage boxOnly matching pieces fit togetherGreat for classroom and home useFor ages 5+