1. Kaitlyn Boettner!

2. A screw is an Inclined Plane wrapped around
the center core.
 Screws can change twisting motion for up and
down.
 Screws can push things together.

3.  Screws were invented in ancient times.
 They were invented in Egypt.
 It was very hard to make.
 They made it by hand.
 It took a wile.

4.  There is sharp screws
 Old screws.
 A different kind of screws is a Thread.