Students will gain an understanding of how different kinds of forces produce motion. Photographs, illustrations, and diagrams clearly show how simple machines come together to create compound machines and how flight has evolved over the centuries. Supports physical science curriculum for grades 4 and up. Topics include forces (magnetic, gravity, friction, etc.), simple machines, compound machines and early and modern day flight. Contents include facts review Bingo game, 3 fast facts folders, 14 fast facts mini-posters, 60 photo activity cards, 70 facts sheets and activity pages and a whiteboard-ready CD.