Pupils needing extra support: 

Could use the Knowledge organiser to help support them answer questions on gears; could work in a group of six and focus on making a single gear; should have the Pupil video: How to make gears available for rewatching as they make their gears.

Pupils working at greater depth: 

Should work in a pair to create the three pairs of gears, making one of each type of gear; should write down evaluation criteria questions in their book and use these to compare their gears.