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Teaching Economics

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Using the Rule of 72

Geoff Riley

28th June 2011

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I suspect a lot of teachers make use of the Rule of 72 at some point in their lessons? I bring it into play when focusing on the average growth rate required for a country’s GDP to double in size. (Divide 72 by the annual average growth rate to get the answer!). Here is a nifty blog on some of the other uses for this rule and similar ones.

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Geoff Riley

Geoff Riley FRSA has been teaching Economics for nearly forty years. He has over twenty years experience as Head of Economics at leading schools. He writes extensively and is a contributor and presenter on CPD and Revision conferences in the UK and overseas.

@tutor2uGeoff

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