The 80:20 Principle – 5 – Mental Models for Education

...to the real.

In 1896 the Italian economist Vilfredo Pareto noticed that roughly 80% of the land in Italy was owned by 20% of its population.

The Pareto Principle, or more often, the 80:20 principle, suggests that 80% of your sales usually comes from only 20% of your products, services or clients.  It’s the reason a First Class ticket to New York costs £7,000 when an economy class ticket costs only £400.

20-80-rule-photo-700x400

This one’s brilliant for time management and decision making in general.  It can be combined with Effort:Impact to help us to realise how, actually, all that time we spend trying to make super nice PowerPoints probably falls into the 20% impact for 80% effort category.

The most important use of the 80:20 principle I’ve found in education is curriculum design.  Will Emeny produced this incredible network map of the GCSE maths curriculum, and in doing so he revealed the 20% that…

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