1. Ben Knaus

2. Pulleys!
Pulleys make lifting objects easier.
A pulleys is a wheel and a rope.

3. Pulleys!
 Pulleys are used to pull things up.
 Pulleys make work easier
 Pulleys may have been invented by Archimedes.

4. Pulleys!
 Some pulleys are not wheels.
 Chain pulleys are in engines.
 Elevators have pulleys.

5. Real life pictures.