Don't be caught in the dark! Young scientists investigate the causes of both solar and lunar eclipses using an interactive to help them understand the development of an eclipse over time. They then research facts and characteristics...

Students, through hands-on activities, teacher demonstrations, pictures, and informational books, complete a unit on the Earth and its place in the Universe. They make mobiles of the Milky Way and watch demonstrations of lunar and solar...

[Free Registration/Login may be required to access all resource tools.] Describes the phases of the moon and what causes them.

[Free Registration/Login may be required to access all resource tools.] Discusses solar and lunar eclipses, the phases of the Moon, and why the phases occur.

Bill Nye explains the phases of the moon with an experiment using a baseball, a lamp on a table, a dark room, and a stool or chair that swivels. As the person moves around, the changes in reflected light show the phases of the moon. The...

[Free Registration/Login may be required to access all resource tools.] Orbital motion and why it occurs, and the orbits of the Earth around the sun and the moon around the Earth.