In our stem class we went around the school to find simple machines. Simple machines are machines that are not compound and make life easier.
Picture 1. 
This is a tack. A tack is a wedge. It is a wedge because it cuts through
things to make things stay.
This is a tack. A tack is a wedge. It is a wedge because it cuts through
things to make things stay.
Picture 2.
This is a ramp. A ramp is an inclined plane.An inclined plane makes things easier to move up or down from place to place.
Picture 3. 
This is a pencil sharpener. It has a lever, screw, and gears in it. A lever helps to make thing move or go. A screw helps things stay together. The gears are what make the lever turn the things on the inside.
This is a pencil sharpener. It has a lever, screw, and gears in it. A lever helps to make thing move or go. A screw helps things stay together. The gears are what make the lever turn the things on the inside.
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