Show the pupils each activity and ask them how the mechanism will move. Ask them to read the parts and think of other devices that they know that use a similar set-up. Click the test button and ask them which parts are moving.

Ask pupils how to make the holes and how they think the wheels stay on. Swap the first and second wheels over and ask what effect this will have on the movement. Click the test button to see if they are right.

Disassemble and discuss each part. Ask pupils to tell you exactly how to put the device back together again.

Suitable for

Years 1-3

Prior learning required

It will help if pupils have had experiences of playing with wheeled toys and moving vehicles. Pupils may have also had experiences of taking apart wheeled toys and vehicles with an adult.

Aims and objectives

Pupils should gain an understanding of how wheels work and the way the role and position of axles affects movement.

Pupils should also have developed the vocabulary to enable them to discuss wheels and axles with their peers.

Timings

Teachers should expect to spend around 15 minutes explaining the workings of wheels and axles to pupils. Lots of questioning and discussion may result in the activities taking longer, especially if real models are incorporated.

Suggestions for group activities

• Groups of pupils should explore different types of wheeled vehicles.
• Pupils should have opportunities to design and make a wheeled device or vehicle involving axles and wheels.
• They should also have opportunities to finish their product by decorating and adding detail or extra components in the form of a more elaborate chassis.
• Pupils may need advice on how to make holes in wheels and how to fix an axle to a chassis.