Solar System Model Kit- Earth Moon Revolves Around the Sun GREAT LEARNING TOOL: An excellent visual aid for school geography and astronomy classes, stimulating children's interest and better allowing them to use their imagination and creativity. Simple operation: The joystick connects to the center tube to activate the pushrod rotation assembly for demonstration purposes. Application: Astronomy teaching and student cognition. Seven continents and four oceans can be observed from Earth. Students can learn scientific knowledge about solar energy while playing. By simulating the three spheres of the sun, the earth, and the moon, you can have a understanding of astronomy. Colour:As Shown Material:Plastic Size:About 41cm long Package Contents: 1 * three-ball Only the above package content, other products are not included. Note: Light reflection 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.