This unit teaches students how and why engineers design satellites to benefit life on Earth as well as allows students an opportunity to explore motion, rockets and rocket motion. Students discover that the motion of all objects...

Learn to identify things you would see or use in the outdoors or open air when you are hiking or camping. Interactive illustrations model correct pronunciation of vocabulary when the mouse is moved over each picture.

Imagine setting sail from Hawaii in a canoe. Your target is a small island thousands of kilometers away in the middle of the Pacific Ocean. For thousands of years, Polynesian navigators managed voyages like this without the help of...