Gravity and Weight :
Activities for the Classroom

How Much Would You Weigh on Distant Planets?
Students in the middle level solar system activity will study the effects of gravity on the planets of the Solar System. They will view movies from the lunar Apollo missions, calculate their own weight on other planets, and propose what they might weigh on newly discovered planets around other stars.

Weighing in the Planets 
A more mathematical activity, in which students first observe the factors that may affect weight for different planets, then calculate the weights of different objects on the planets.

GEMS Earth, Moon, and Stars
This teacher guide includes an activity "The Earth's Shape and Gravity" to promote student development of their mental models fo the Earth and student discussion about up and down from various parts of the Earth.