How+the+World+Works

How The World Works
 * Unit 5 - March 2012 - 'Machine Mania'**
 * Transdisciplinary theme**

Machines have improved the quality of life throughout time. **Lines of Inquiry** - The first and most practical machines – lever, pulley, screw, wedge, inclined plane, and wheel & axle - Simple vs complex machines - How modern machines save time and energy
 * Central idea**