Description: A ball is set in circular motion around the rim of a plastic plate. A quarter piece is cut out of the plate, and students are asked to predict the direction of the ball when it leaves the cut edge of the plate. The ball is then observed regarding how it leaves the plate so that students can then explain the event in terms of Newton's first law as applied to circular motion. This follows the Predict Observe Explain model for Science education.
Description: Is there a worm in your straw? Jason Lindsey aka "Mr. Science" with Hooked on Science and a kid scientist show us how a little water will cause a warm to wiggle from your straw paper. Go to http://www.hookedonscience.org/nextgenerationsciencestandards.html for the FREE NGSS experiment guide.