What Are Simple Machines?

Simple machines are tools that make work easier by changing the size or direction of a force. They help us lift, move, or cut things with less effort.

The Six Simple Machines

• Lever: Like a seesaw or crowbar.
• Pulley: Like a flagpole rope.
• Wheel and Axle: Like a bike wheel.
• Inclined Plane: Like a ramp.
• Screw: Like a jar lid.
• Wedge: Like a doorstop.

How They Help

Simple machines are everywhere! They help us open cans, ride bikes, and build houses.

Real-World Connections

• Using a ramp to move a heavy box into a truck.
• Turning a screwdriver to build a birdhouse.