Science Buddies
Science Buddies: Using the Soho to Determine the Rotation of the Sun
This project shows you how to use images from an orbiting observatory to measure how fast the Sun rotates.
BioEd Online
Bio Ed Online: Sleep and Circadian Rhythms
The following lessons help students from grades 6-8 understand sleep and circadian rhythms. Lesson topics iinclude: day and night, seasons, sundails, clocks, sleep and sleep patterns and sleeping in space.