Feature: 1. Improve Innovation Awareness: Use hands to simulate the wandering of space star, this model can improve innovation awareness and ability of children 2. Enhance Hands On Ability: This building blocks can cultivate and exercise hands on ability, and improve intelligence 3. Increase Knowledge: This model allows children to understand the working principle of the movement of the star, and cultivate interest in learning and desire for knowledge 4. Lay Good Foundations: The scientific knowledge in small production can lay the foundations for future inventions, mathematics, physics and chemistry learning 5. Beech Wood Material: The building block is made of original ecological beech wood, without paint, which is safe and environmentally friendly, and can be used with confidence Specification: Name: Solar System Wooden Model Material: Beech Usage: Hand mading, puzzle teaching Paint Material: Wood without paint Building Block Type: Wooden building block Power Supply: 2 x 1.5V AA Dry Battery(not included). Package List: 2 x Wooden Board1 x Battery Box1 x Motor3 x Foam Ball1 x Iron Shaft2 x Shaft Sleeve1 x Sand Stick3 x Color Pen