1. Making Things Work Melody Wright 4 th grade Power Point ECE 8842, section 4

2. Table of Contents Georgia Performance Standards Georgia Performance Standards Types of Simple Machines Organizer Types of Simple Machines Organizer Inclined Plane Inclined Plane types of inclined planes types of inclined planes Wedge Wedge types of wedges types of wedges Levers Levers types of levers types of levers Screws Screws types of screws types of screws Pulleys Pulleys types of pulleys types of pulleys Wheels and axles Wheels and axles types of wheels and axles types of wheels and axles Other Types of Simple Machines Other Types of Simple Machines Simple Machines in Our Homes Simple Machines in Our Homes Simple Machines at Work Simple Machines at Work Pulleys and Inclined Planes Levers Resources Resources Resources How Do You Move a Lion? How Do You Move a Lion? Closing Slide Closing Slide

3. Georgia Performance Standard S4P3. Students will demonstrate the relationship between the application of a force and the resulting change in position and motion on an object. a. Identify simple machines and explain their uses. (lever, pulley, wedge, inclined plane, screw, wheel and axle)

4. Types of Machines 6 types of Simple Machines pulleyLeverscrew Wheel and Axle Inclined Plane wedge

5. Inclined Plane An inclined plane is a flat surface set at an angle to another surface. An inclined plane is a flat surface set at an angle to another surface. Where do you find inclined planes? How might you use an inclined plane?

6. Inclined Plane An inclined plane is used to make moving things up and down easier. Inclined planes are ramps, slides, and stairs; many others, too.

7. Wedge A wedge is two inclined planes stuck back to back. A wedge is two inclined planes stuck back to back. A wedge is wide at one end and tapers to a point at the other. Where might you find wedges? How might you use a wedge?

8. Wedge Knives, doorstops, saws and scissors are all types of wedges. Wedges are used to separate things by cutting, piercing, or splitting the objects.

9. Levers A lever is a bar that moves on or around a fixed point. A lever is a bar that moves on or around a fixed point. Where do you find levers? How can you use a lever?

10. Levers Levers, levers everywhere! A lever is used for raising or moving heavy objects. See-saws, push bars, hammers, bottle openers, and pop-tops on soda cans are all levers!

11. Screw A screw is an inclined plane that curves around a pole. A screw is an inclined plane that curves around a pole. Where do we find screws? How do we use screws?

12. Screw A screw is used to hold things together. Screws are all around us! Bottle tops, bolts, and even the end of light bulbs are all types of screws!

13. Pulley A pulley is a rope over a wheel. It changes the direction of the force you use. A pulley is a rope over a wheel. It changes the direction of the force you use. Where do we find pulleys?

14. Pulley A pulley makes it easier to move objects up, down, and across a long distance. The more pulleys you combine, the less force you need to move an object. A flagpole is a type of pulley.

15. Wheel and Axle A wheel and axle is a machine that has a bar through the middle of a wheel. A wheel and axle is a machine that has a bar through the middle of a wheel. Where do we find wheels and axles? Why do we use wheels and axles?

16. Wheel and Axle When the wheel is turned, the axle turns, too. Doorknobs, tape dispensers, pencil sharpeners, and automobiles all use wheels and axles.

17. Other Examples of Simple Machines Inclined plane WedgeLeversScrewPulley Wheel and axle slidekitchenknife light switch tornado slide cranespizzacutter wheel- chair ramp doorstopbroom Coke bottle top sailboatsailsfishingpole

18. Simple Machines in Our Houses Annie’s HouseAnthony’s House

19. Simple Machines at Work Pulleys and Inclined Planes

20. More Simple Machines at Work Levers

21. Resources Websites http://edheads.org http://home.earthlink.net/~kandyhig/sm/ www.harcourtschool.com/activity/machines/simple_machines.htm www.kidskonnect.com/SimpleMachines/SimpleMachinesHome.html http://www.hep.uiuc.edu/home/mats/wg2004.html Books Simple Machines by Allan Fowler The Wheeling and Whirling Around Book by Judy Hindley How Do You Lift a Lion? By Robert E. Wells (see the book cover on the next slide) Back to table of contents

23. Don’t you just Simple Machines?!