Kumon Step-Up Jigsaw Puzzles Step 4The "Small Step" jigsaw puzzle series helps children develop concentration and working abilities, leading to learning through play. The STEP 4 set includes 3 types of jigsaw puzzles, ranging from 54 pieces up to 88 pieces. The gradual increase in puzzle pieces helps children steadily enhance their focus and problem solving skills, while also experiencing the achievement and satisfaction of completing a full puzzle. How to Play Children complete the