3-ELE-09
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Contents
Outcomes
- Pupils can analyse results and identify direclty and inversely proportional relationships
- Pupils can evaluate their own practical work and look to improve upon their results
Specification References
None
Starter
- Review practical from previous lesson
Main Body of Lesson
- Go through "what makes a good graph" inluding how to find gradient, scales, labels etc.
- 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
- Pupils to take some data from their graph to e.g. to predict the resistance for a given length
- Discuss where errors could have arisen
- Discuss improvements which could be made to the investigation
Plenary
- Recap practical methods used, discuss how the investigation could be furthered
Homework
- Revise for end of topic test
Additional Information
Resources Required
Textbook References
Website References
Skills Addressed
Safety/Hazards
- Wires can get quite hot - do not let pupils use currents over half an Amp.
