One lesson that takes students through calculations for fixed resistor tolerance, resistors in series and resistors in parallel (this has come up in a previous exam, but equation was given). Students can also carry out a practical exercise with prototype boards and/or computer simulation with software like CircuitWizard.
Recommend use of Hodder’s AQA GCSE (9-1) Engineering Textbook and/or Revision Notes. Alternatively, the internet may be used, e.g BBC bitesize.
Recommend use of Numeracy in Engineering worksheets from Attainment in Education - for further calculation exercises.
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