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Arrow Arithmetic 1

The first part of an investigation into how to represent numbers using geometric transformations that ultimately leads us to discover numbers not on the number line.

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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 2

Age 14 to 16 Challenge Level:
Steffan says:
"Value of the blue arrow take away the value of the green arrow gives you the silver arrow number."

True, but what are you doing geometrically?

Here are a couple of audio/video clips showing geometrical calculations completed using the double arrow notation.