What are calories, and how do calorie needs differ from person to person? Here is a activity that briefly explains how calories measure the energy supplied by food, as well as suggests the amount of food an individual should eat per day.

Test the limits of gravity while encouraging full class participation with this thrilling lesson. Pupils investigate the meaning of work and how it is equivalent to energy. They explore the joule and apply it as a unit of work. They...

The Center for Mathematics and Science Education at the University of North Carolina at Chapel Hill provides an interesting and easy-to-use dictionary of the history and meaning of many measurement terms. Metric, International, and...