Gravity: Mass, Energy, and the Force That Holds Things Together with Hands-On Science

What's keeping you down? Gravity! In Gravity: Mass, Energy, and the Force that Holds Things Together with Hands-On Science Activities scientists ages 8 to 12 explore the invisible but powerful force that is responsible for keeping the entire universe in place--including you! Hands-on science projects and essential questions offer kids a deep exploration into this phenomenon that affects us all, all the time.