Description This model is durable with fine workmanship. It can display the astronomical phenomena of the sun, earth and moon visually. Students will be more interested in class teaching. Students are more likely to understand the movements of the sun, the earth, and the moon as they change over time. Features - Color: Random Ball color.- Material:Plastic.- Size:20.00X12.00X7.00cm/ 7.86X4.72X2.75in.- The model is an excellent way to illustrate Earth's rotation, the planet's revolution around the sun, the seasons of the year, and the orbit of our moon - all in one!- This device can serve to illustrate to a young child that Earth spins on its axis, that the moon orbits Earth every 28 days, and the Earth orbits the sun once a year.- You can learn about the solar terms used by farmers in China, it's pretty easy.- Cultivate your child's hands-on ability and stimulate interest in learning. Cultivating children's interest in learning and desire for knowledge.- Let the child develop the study interests and improve their grades through the practical operation. Packing list: 1 Set x Sun Earth Moon Orbital Model