[Free Registration/Login Required] In this unit children learn about the shapes and relative sizes of the Earth, Sun and Moon. Using models they learn how the three bodies move relative to each other and how these movements relate to...

[Free Registration/Login Required] This flipchart demonstrates how the positions of the Earth, Moon and Sun cause phases of the Moon. It also illustrates the positions of the Earth, Moon, and Sun during a day and a month's time.

[Free Registration/Login Required] This flipchart describes what causes the seasons, explains the moon's phases, and introduces what a constellation is. It utilizes the Activotes to help describe the phenomena.