Created by Senior Research Associate Nari Mistry at Cornell University, this 23-page pdf gives a brief but thorough introduction to particle physics. Complete with illustrations, this document covers sub-atomic...

This collection of teaching tools, authored by the Space Telescope Science Institute (U.S.) includes lithographs, fast facts, graphic organizers, question and answer sessions, and online explorations on an array of...

The activity provided on this web page offers students a chance to understand how mirrors can be used to create the appearance of defying gravity. With an easy setup, these activities can make students appear to perform...

This activity from the provides a demonstration of the relationship between an object’s center of gravity and its angular momentum. One attempts to balance a stick with a piece of clay stuck to it in various locations. ...

This activity from the Exploratorium provides a technique for determining the center of gravity of a long, thin object using only one’s hands. A yard stick, with a piece of clay to displace its center of mass, is placed...