Discovering Simple Machines

Four 20-minute lessons
Produced 2001
School use rights: 1 year
Grades 1-4 / Science
(closed captions)
5 S
Video Tape Library

Students discover that the concept of "work" to a scientist is very different from what we think of as "work." To a scientist, work is accomplished when an object with resistance is moved a distance. To a scientist, reading an assignment in a textbook represents no work at all! Potential and kinetic energy and friction are also discussed.

1. Work and Energy

2. Lever, Wheel and Axle, Pulley

3. Inclined Plane, Wedge, Screw

4. Compound Machines

ITV Programs By Subject Area --> -->

ITV Daytime Schedule

ITV Schedule At-A-Glance

ITV Block Schedule

Proficiency Correlation

Videotape Library

Online Teacher Guides

Teacher Guide Order Form

ITV Programs Web sites

Membership Services