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RE

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by

Paul Sheffield

on 6 March 2016

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Transcript of RE

RESISTIVITY
STARTER
WHAT IS RESISTANCE?
HOW DO WE CALCULATE IT?
WHICH FACTORS AFFECT IT?
WHY?
RESISTIVITY
Marking Points
Lab Manual
Context
Physics (Year 12):
Determine the electrical resistivity of a material
Observed
A student is working a part of a pair. The student asks the teacher for reassurance that the apparatus provided is correct for the experiment. He takes no part in the setting-up of the circuit, leaving this task to his partner. The worksheet tells students to collect a reading every 10cm along a 1-metre length of wire. The student collects three readings only, and asks his teacher if this is enough data.

Context
Physics (Year 12):
Determine the electrical resistivity of a material
Observed
A student is working a part of a pair. The student reads the instructions provided for the practical. She is able to use the circuit diagram from the apparatus provided. With her partner, she asks her teacher to check the circuit, which is correct. At the end of the practical session, she has collected sufficient data, together with her partner, as outlined in the method on the worksheet.

Context
Physics (Year 12):
Determine the electrical resistivity of a material
Observed
The student is provided with an outline of the experiment, where some steps are given in outline only. He reads through the instructions provided and is able to formulate a correct method for the task. He finds all the apparatus independently (CPAC 2d). He sets up the circuit, and checks that it is correct before turning on the power pack. He works methodically to collect the data required, ensuring that is tabulated and checked as he goes along (CPAC 4b).

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