As Parents once you invest in Educational toys, you help kids enhance their imagination, problem solving skills, fine motor skills and develop social skills. In this products kids sequence numbers on train wagon from 21-31, 31-41 and 41-51 in different boards. In this way through fun way kids learn to sequence numbers . Children who have developed fine motor skills tend to find it easier to write, draw and learn to play instruments. Through grasping pieces and matching jigsaw pieces together, children also improve their spatial awareness and hand-eye coordination. . Size of each board- 12*3 inch Material - MDF(Wood) Thickness of puzzle - 3mm approx Packaging- Packed in Single box. Total Puzzles-27 pieces in total three boards.