In this interactive lesson, learn what the "physical properties" of matter are and how can they be measured and observed.

In this lesson, students examine photographs of Europe as they learn to distinguish between physical and cultural characteristics of a landscape, and make observations and inferences about the places and people in the photographs. They...

Have you ever wondered how fun toys like Silly Putty, Gak, and Slime are made? These products are so much fun because of the properties of polymers, which make them delightfully bouncy, stretchy, sticky, moldable, breakable, hard, soft,...

Physicist Felix Bloch developed a non-destructive technique for precisely observing and measuring the magnetic properties of nuclear particles. He called his technique "nuclear induction," but nuclear magnetic resonance (NMR) soon became...