Learn how the two types of eclpises occur.

Find out about the differences between solar and lunar eclipses and what causes both events to occur.

Develop and use a model of the earth-sun-moon system to describe the cyclic patterns of lunar phases, eclipses of the sun and moon, and seasons.

This site explains the phases of the moon and an easy way to remember waxing and waning. Students have to explain a given phase to their classmates with a model.