Take a close look at the world around you with an activity that magnifies everyday objects. Five explorations examine items under intense magnification and pose a series of questions that encourage critical thinking and following...

Never forget a term used in Microsoft Word with these four pages of related vocabulary and their definitions. 

Take young geologists on an exploration of the collection of rocks and minerals that we call Earth with an upper-elementary science lesson. Through a series of class discussion and hands-on investigations, students learn about the...

This is an informative site from Georgia State University. It gives a discussion of the thin lens equation and an illustration of its use in determining the image distance based upon the object distance and the focal length.

A solid chapter explanation of the wheel & axle simple machine. Examples, the basic math, explanation of mechanical advantage, drawings, solved problem. Use the Next button. There are four pages in this chapter.