Rich Aunt

This task allows students to explore the difference between linear and exponential sequences and their sums.

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Mathematical strand

Algebra and Graphs, Financial Maths

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Prior knowledge

Calculating profit and loss, using a spreadsheet to model simple financial contexts.

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Relevance to Core Maths qualifications

  • AQA
  • C&G
  • Eduqas
  • Pearson/ Edexcel
  • OCR

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Suggested approaches

This task is suitable for small group discussion and modelling using a spreadsheet. Given the need to ‘reply to a letter’ there is a purpose and audience for the work which can be motivating.

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Resources/documentation

The resource is on the following sheet but can be freely downloaded from the STEM e-library.

Rich Aunt Task

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Relevant digital technologies

Students will need spreadsheets to model the different approaches proposed by the Rich Aunt and inform their decision-making.

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Possible extensions

Students could make up their own scenario where the outcomes are not immediately obvious.

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Acknowledgement

From SMILE spreadsheet resources available at https://www.stem.org.uk/elibrary/resource/31135