1. Simple machines in the real world.

2. Machine- something that makes work seem easier by changing the size or direction of a force.

3. Work – using a force to move an object a certain distance.
Who is doing more work?

4. Machines are: Tools we use to make work easier.
Types of machines:
Levers Screws Wedge
Pulley Inclined Plane
Wheel and Axle

5. Let’s Review First!!!
Pulley A grooved wheel with a rope running through the groove
Inclined Plane A slanting surface
Screw An inclined plane wrapped around a cylinder
Lever A rod or board that pivots at one end
Wedge Has a slanting side ending in a sharp edge
Wheel and Axle A wheel with a rod or axle through center

6. But can you recognize simple machines in the real world?

7. Lever
Wheel & Axle
Wedge

8. Pulley
Wheel and Axle
Screw

9. Lever
Pulley
Screw

10. Inclined Plane
Lever

11. Lever
Wheel & Axle
Screw

12. Wheel & Axle
Lever
Screw

13. Pulleys

14. Wedges

15. Lever

16. Inclined Planes

17. Levers

18. Now it’s your turn! Can you name all six simple machines from memory?
Lever
Wheel & Axle
Wedge
Screw
Inclined Plane
Pulley

19. What simple machines can be found in this compound machine?

22. From the Tab Choose an Activity… Click Simple Machines
Assignment…
Go to
From the Tab Choose an Activity… Click Simple Machines
Complete one Activity from The House and one activity from The Tool Shed, as well as one more of your choosing. Print your results.