Everybody loves a challenge! Help children build confidence and achieve success with fun three-piece puzzles that hone their skills at their own pace. Only matching pieces fit together, so kids can learn by trial and error. These pieces allow students to practice addition with photos for real-life learning on front and numbers on the back of each card. Details: Easy Addition Fun-to-Know Puzzles design 1.5'' x 7.5'' x 7.5'' Photos for real-life learning For ages 5 and up Contents: 15 two-sided, three-piece puzzles, 45 pieces (3'' x 3'' each piece) Sturdy storage box