PURPOSE: To use models of the earth, moon and sun to show whatever needs to be shown.
DESCRIPTION: A globe on a stand acts as the earth, aball on a stand is the moon, and a light bulb is the sun. A cut out of a plane surface that fits over the earth is available, as shown in the above photo.
EQUIPMENT: earth, moon, sun as photographed.
SETUP NOTES: None.
Updated by Jun Qi in 3/20/2000