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. Teach sequencing and ordinal numbers. Pictures on front, words and numbers on back. Durable, 3" x 3" pieces. Sturdy storage box. Each pack includes 15 two-sided, three-piece puzzles (45 pieces). Sold as 3 packs. For ages 4 and up.