(Ideal for teaching ages 4 and older) Everybody loves a challenge! Help children build confidence and achieve success with fun 3-piece Fun-to-Know® 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 the front, words and numbers on back. Durable, 3″ x 3″ pieces. Sturdy storage box. 15 two-sided, three-piece puzzles. 45 pieces.