Red, yellow, blue. Orange, purple, green. Introduce kids to primary and secondary colors with a series of videos and a 19-slide presentation that shows how mixing primary colors produces secondary colors.

Can we model how large the solar system really is? Attempt an astronomical feat with a hands-on-activity that uses a roll of toilet paper. Young scientists measure the distances of the planets from the sun to create a scale model of...

A light, and humorous lesson plan on "street cows" is here for you. Learners listen to the story, "Street Cows," which is embedded in the plan. On a map of the US and the World, they locate the cities where the "Cows on Parade" exhibit...