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Arrow Arithmetic 1

Age 14 to 16
Challenge Level Yellow star
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We're in the early stages of developing a useful geometric model of number here.

The aim is to develop geometric analogues of number and number operations.

Ultimately, we'll want to be able to geometrically multiply the geometric analogue of 2 by the geometric analogue of 3 to yield the geometric analogue of 6.

This first idea of using a simple arrow to represent the number 1 needs a little more before it gives us a well defined geometric number.

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A Story about Absolutely Nothing

This article for the young and old talks about the origins of our number system and the important role zero has to play in it.

Balance Power

Using balancing scales what is the least number of weights needed to weigh all integer masses from 1 to 1000? Placing some of the weights in the same pan as the object how many are needed?

Galley Division

Can you explain how Galley Division works?

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The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.

NRICH is part of the family of activities in the Millennium Mathematics Project.

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