A simple machine is a device that makes work easier by allowing us to apply a smaller force over a greater distance.

Three types of simple machines are levers, pulleys, and inclined planes.

A wheel and axle is a simple machine where a wheel is attached to a rod (axle) so they can turn together.

A pulley allows you to lift heavy objects by changing the direction of the force you apply.

You can make toys from waste materials using simple machines.

Maintenance is important to keep machines functioning properly and to extend their lifespan.

The main parts of a bicycle include the frame, wheels, pedals, handlebars, and brakes.

The brake slows down or stops the bicycle by creating friction against the wheel.

Materials include cardboard, plastic bottles, straws, and rubber bands.

Look for objects that help you perform tasks with less effort, such as door handles or inclined surfaces.

Always handle cutting tools with care and clean the area after use.

A lever helps lift heavy loads with less effort by using a fulcrum.

An inclined plane is a flat surface that is tilted at an angle to help lift loads.

Common problems include flat tires and misaligned brakes.

You would use tire levers and a pump to repair a flat tire.

A robotic arm is a machine that mimics the movements of a human arm to perform tasks.

A catapult uses a lever to launch objects by applying force at one end.

Using waste materials reduces environmental impact and promotes recycling.

Pick a project that interests you, either from provided examples or one you design yourself.