ppt, 1.73 MB
ppt, 1.73 MB
A different way of teaching negative numbers using... sandcastles! Quite a nice visual way of thinking about it.
Creative Commons "Sharealike"

Reviews

4.3

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Theresa_Knott

5 years ago
5

I love this. So well made and clear.

juliesmith

9 years ago
4

Doylum

11 years ago
4

Great resource. Fresh way of introducing directed numbers.

takepi

14 years ago
4

Great thanks. I wonder - why did you choose to multiply before adding and subtracting?

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