The sun-earth-moon model can demonstrate the rotation of the earth, of the moon, the changes of day and night at the same place, and the changes of day and night at the same time. Make a big difference to your child. Let students learn astronomical knowledge by operating this model. Features - Color: Mainly wood color+ white. - Material: Wood. - Size: 18.60X10.00X8.20cm/7.31X3.93X3.22in. - This model is a great way to illustrate the rotation of the Earth, the rotation of the planets around the sun, the seasons of the year and of the moon. - This device can explain to young children that the earth rotates on its , that the moon circles the earth every , and the earth circles the sun every year. - You can learn the solar terms and farming time used by Chinese farmers, very simple. - Cultivate children's hands-on ability and stimulate their interest in learning. Cultivate children's interest in learning and curiosity. - Let children develop their interest in learning through practical and improve their academic performance in geography. Package list: 2 x Sun Earth Moon Orbital Model