Everybody loves a challenge! Help children build confidence and achieve success with fun 2-piece puzzles that hone their skills at their own pace. Only matching pieces fit together, so kids can learn by trial and error. Matching helps learners identify numerals and understand number values. Photos for real-life learning. Durable, 3" x 3" pieces. Sturdy storage box. 20 two-piece puzzles. 40 pieces.