Do you think Earth makes fun of other planets for having no life? The presentation covers the rotation and revolution of both the earth and our moon. It provides explanations for seasons, tides, and eclipses. Lesson is the 20th in a...

How do the moon, sun, and Earth line up to create eclipses? Why do the seasons change throughout a year? The answers to these questions are explained through this series of slides. This apt presentation outlines information using bullet...

Here is a stellar slide show for illuminating middle schoolers' minds on the topic of light! An interactive slide allows viewers to sort light sources by whether or not they are man-made. More objects are displayed and learners discover...