Third graders compare the earth and the moon in this activity.

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.

Understand where the sun is in the solar system and how big the earth, moon, and sun are.

This survey of the planets includes all the basics, size, mass, atmosphere, length of day, and the like. It features interactive activities and learning exercises and compares all of the planets in colorful tables.

Compare weather here on Earth to other planets and moons in our solar system. You will find many similarities and differences.