Patricia Armentrout

"There are billions of stars in our galaxy, the Milky Way, and billions more throughout the universe. Find out what stars are made up of, what makes a constellation, and how travelers have used stars for centuries to find their way"--Back cover.

Describes hockey rinks and how they are set up for the game and discusses other equipment used to play hockey, including skates, sticks, and protective gear.

Defines wedges, explains their functions, and suggests simple experiments to demonstrate how they work.

Defines pulleys, explains their functions, and suggests simple experiments to demonstrate how they work.