Host a design challenge of Olympic proportion! Junior engineers build their own bobsleds using simple materials. The activity focuses on kinetic and potential energy and how the center of mass affects motion on a downhill track....

Learners create a model of the USDA's Food Pyramid Guide, using shoe boxes. They bring an assortment of shoe boxes from home. Students are given a copy of the "Food Guide Pyramid." They wrap boxes for the bread group in white, the...