Simple+Machines

I know -

a robot a computer a tv a projecter

What is a Simple machine? wheel and axle a wheel and axle is on a rollercoaster

Why are simple machines useful? a wheel and axle is useful because you can get places faster

What is a Simple machine? PULLEY

A pulley is like a sling shot.

Why are simple machines useful?

A pulley is a simple machine because it helps people move things that are heavy.

What is a Simple machine? Inclined plane is like a plank.

Why are simple machines useful? To move things up and down.

What is a Simple machine? Lever is a shovel

What is a Simple machine? A wedge is an axe

Why are simple machines useful? To chop down things

1. What each machine is and how it works. Wheel how it works- The Wheel goes forward

2. Why is it useful? Wheels are useful because they are on cars and cars take us places.