1. Machines Made Simple GRADE 3 Mrs. Howard’s Class 2009 Observation

2. Simple Machines basic types Designed to make work easier Few or no moving parts Combine to form complex machines

3. SSPJ Lever

4. NSF North Mississippi GK-8 Pulley

5. Two wheel bikes Wheel and Axle

6. ramp Inclined Plane

7. Wedge

8. Large screw Screw

9. GEARS Another example of a simple machine GEARS ON A CLOCK

10. Jason is helping his family move out of their old house. Help him decide which task would be easier, and then help him figure out what simple machine makes the job easier.

11. Situation 1 Jason has to move some heavy boxes into the moving truck. AB B It would be easier because a ramp is an inclined plane.

12. Situation 2 Jason has to move a heavy box a long distance. AB The wagon would be easier because the wagon has wheels and axles.

13. Number 3 Jason needs to tear off a piece of packing tape. AB B. It would be easier because the edges of the scissors are wedges.

14. Number 4 Jason needs to move a heavy box to his room on the fourth floor. AB B. It would be easier because Jason is using a pulley.

15. Number 5 Jason needs to help his father move the refrigerator. A. It would be easier because the dolly is a lever (with wheels and an axle). AB

16. Number 6 Jason needs to help his father change a flat tire on the moving truck. AB B. It would be easier because a jack uses a screw.

17. Now that Jason and his family have reached their new house, they need some help in unpacking their belongings. Help Jason decide on the best simple machine to use in each situation.

18. Number 7 Jason needs to open the boxes his mom sealed with packing tape. What simple machine should he use? Jason should use a wedge (probably a pair of scissors).

19. Number 8 The door to the moving truck is jammed shut. What simple machine might Jason’s father use to open it? Jason’s father should use a lever (most likely a crowbar).

20. Number 9 Jason needs to carry the boxes out of the moving truck. What simple machine will make this easier? Jason needs an inclined plane (a ramp) to carry the boxes out of the truck.

21. Number 9 There is a flagpole outside Jason’s new school. What simple machine could be used to raise and lower the flag? A pulley is used to raise and lower the flag.

22. SSPJ Jason’s mom wants to hang a cabinet in the new kitchen. What simple machine might she use to attach it to the wall? Jason’s mom could use a screw to attach the cabinet to the wall and hold it in place.

23. SSPJ Jason helped his father install doorknobs in the new house. What kind of simple machine is a doorknob? A doorknob is a wheel and axle.

24. Can you identify the new simple machine in this picture? Simple Machines

25. Gears Identifying Simple Machines Inclined planeWheel and axleWedge Screw PulleyInclined plane

26. Can you name these simple machines? Simple Machines

27. SIMPLE MACHINES INTERACTIVE ACTIVITY Lets see if you can help find the simple machines in this activity http://www.edheads.org/activities/simple- machines/index.htm