Machines

Lever

Make it easier to lift things.

Examples: See-saw, fishing rod, nutcracker, ice thongs, and more.

Wheel and axle

Axle turns the wheel and easy to roll a heavy object on wheels than it.

Examples: Bicycle, steering wheel

Inclined plane

Make it easier to push bit along instead of lifting up.

Examples: Ladder, Staircase

Wedge

Force things apart.

Examples: Axe

Pulley

Has a wheel with a rope to lift the heavy load at the other end.

Screw

Fasten things together.

Gear

Wheels with teeth than fit between one another.