All kids know the word "work." But they probably don't understand that work happens whenever a force is used to move something - whether it's lifting a heavy object or playing on a see-saw. All About Simple Machines introd... more »uces kids to the concepts of forces, work and how machines are used to make work easier. Six simple machines are presented using fun, real-life demonstrations and clear, colorful graphics: the lever, the wheel and axle, the pulley, the inclined plane, the screw and the wedge. Learn more about these simple wonders and see how they are the basis for most of the world's tools and machines. Grades K-4« less
Studio:Schlessinger Media Format:DVD - Color - Closed-captioned DVD Release Date: 05/23/2006 Release Year: 2006 Run Time: 0hr 23min Screens: Color Number of Discs: 1 SwapaDVD Credits: 1 Total Copies: 0 Members Wishing: 1 MPAA Rating: NR (Not Rated) Languages:English, Spanish