1. Material: wood 2. Applicable age: 3-6 years old 3. Learning astronomical knowledge in play, answering children curiosity 4. Science teaching matching board, improve children cognitive ability and exercise fine motor 5. Selected boards, rounded corners, no burrs, strong, durable and playable 6. Exploration research, hands-on brain, cognitive galaxy, matching cognitive size and exercise hands-on skills 7. Weight: solar system series about 150g, eight planets series about 80g 8. Size: solar system about 30 x 15 x 0.8cm, eight planets about 40 x 7 x 0.8cm, round solar system about 30 x 23 x 0.8cm
