Outcomes

Specification References

Pupils to use their data from the previous lesson and plot the following graphs:

1)average resistance against length 2)average resistance against area 3)average resistance against 1/area

Ask pupils why the curved graph is less useful
Discuss the concept of variables being directly proportional
Go through "what makes a good graph" inluding how to find gradient etc.
Pupils to take some data from their graph to e.g. to predict the resistance for a given length