Science & Exploration Sets features: This set of writable numbers board is an early math educational toy designed specially for the baby or kid. It is a wonderful way to arouse your baby's interest of cognition of math. In addition, your baby's thought can also be exercised greatly. Playing with your kids will make them happy. Features Color: as shown Material: wood, paper, water-based pen Size: 27.00X26.00X3.00cm/10.61X10.22X1.18in Compact design and lightweight, it is convenient to carry and store when you are at outside In the process of fiddling, self-exploration, self-learning, self-discovery, self-construction, self-development, and logical concepts This logical thinking puzzle toy set could cultivate kids' logical thinking and exercise their early math thinking Equipped with delicate objects and grid plate, it is easy to operate This is a perfect little game for kids to take in the car on a trip, or a perfect party favor.