Can train the child's observation ability, the logical thinking, the practical ability, the color knowledge and the figure cognition. Find the corresponding color blocks according to the diagram, observe the patterns on the topic, and stack the color blocks in the correct order. 100 challenge levels, a total of four difficulties, the initial-general-medium-complex. The toy is made of PET material, which is durable, wear-resistant and long time to use. The edge is smooth and safe to kids, it is a perfect educational toy for kids. version:Low version Colour:multicolor Material:plastic Package Contents: 1 set * Logic Jigsaws Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.