By Jeremy Johnson
In my 13 years of classroom teaching experience, I’ve learned a few tricks to keep my students from becoming overwhelmed—or bored—by their science textbooks. One of my favorite tricks is to get my kids up on their feet, doing science instead of reading about it.
When I teach about gravity and center of mass, for example, I like to shake things up by turning our classroom into an impromptu biokinetics lab. I challenge my students to perform a series of seemingly simple physical tests, described below. Lift a chair? Raise your leg? Pick up a quarter? No problem! (Or so they think…)
Posted by Donna Giachetti 
by Nancy Foote
Forces and motion are all around us. You might even say they make the world go ’round. In 1687 Isaac Newton attempted to explain the movements of everything in the universe—from a pea rolling on a plate to the position of the planets. It’s staggering to think about how much of our daily life involves some aspect of Newton’s Laws of Motion.