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Arrow Arithmetic 2

Introduces the idea of a twizzle to represent number and asks how one can use this representation to add and subtract geometrically.

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Arrow Arithmetic 3

How can you use twizzles to multiply and divide?

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Twizzle Arithmetic

Arrow arithmetic, but with a twist.

Arrow Arithmetic 1

Age 14 to 16 Challenge Level:

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.