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. Challenge learners to pair community helpers with their tools. Photos for real-life learning. Durable, 3" x 3" pieces. Sturdy storage box. Each set includes 20 two-piece puzzles, 40 pieces total.