The following lessons help learners 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.

This resource provides information about Earth and space. In addition, there is a quiz provided.

View a map of the Earth showing the day and night regions at this moment, or from the sun, the noon, the night side, and other points of view in this simulation. Illustrated.

[Free Registration/Login Required] This flipchart illustrates a view of the earth from space and how day and night happens.

[Free Registration/Login Required] In this flipchart students will understand how the Earth rotates during a 24 hour period giving us day and night.