1. By Ashby Morell Clip Art from Microsoft Office 2007
Simple Machines
By Ashby Morell
Clip Art from Microsoft Office 2007

2. State Standards Science:
GLE 0107.Inq.1 Observe the world of familiar objects using the senses and tools
0107.T/E.1 Explain how simple tools are used to extend the senses, make life easier, and solve everyday problems.  

3. Machines are tools that make tasks easier.

4. All machines are built using one or more simple machines.

5. Simple machines have very few parts.
There are six types of simple machines:
pulley
lever
wheel and axle
inclined plane
wedge
screw

6. A pulley is one type of simple machine.
A pulley uses a wheel and a rope to move heavy objects.

7. Here are some examples of pulleys.

8. Can you think of other examples of pulleys?
Did you say either of these:
A pulley that raises and lowers blinds.
The pulley that raises and lowers the flag on a flagpole.

9. A lever is a type of simple machine.
A lever uses force to move something.

10. Here are some examples of levers.
bottle opener
seesaw
toilet flusher

11. Can you think of other examples of levers?
Did you say either or these?
crowbar
scissors

12. A wheel and axle is a type of simple machine.
The axle is the rod that holds the wheels together.

13. Here are some examples of wheel and axles.
pencil sharpener
rolling pin
ferris
wheel

14. Can you think of other examples of wheel and axels?
Did you say any of these?
skates
wagon
bicycle

15. The inclined plane is a simple machine.
An inclined plane is a slanted surface that can be used to raise or lower things.
An inclined plane does not move.

16. These are some examples of inclined planes.
boat
ramp
wheelchair ramp
hatchet

17. Can you think of other examples of inclined planes?
Did you say any of these?
dump truck
ladder
roller
coaster

18. A wedge is a type of simple machine.
A wedge is two inclined planes that are back to back.
The difference between an inclined plane is that it does its work by staying still, while a wedge moves.
Wedges hold things together or split things apart.

19. These are some examples of wedges.
A fork and a knife
screwdriver
golf club

20. Can you think of other examples of wedges?
Did you say any of these?
ship
nail
teeth

21. A screw is a type of simple machine.
A screw is an inclined plane that is wrapped around a cylinder with a flat head on one end.
This head is used to turn or drive the screw into something.

22. These are some examples of wedges.
corkscrew
bottle lids
swivel stool

23. Can you think of other examples of screws?
Did you say any of these?
door lock
clamp
light bulb

24. As you can see, our world is made up of many simple machines
As you can see, our world is made up of many simple machines. You can find examples any place you look.
Simple machines solve the problem of how to do work faster and easier.
Maybe you can invent a machine that will make some job faster and easier.