Last updated
29 September 2013
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A different way of teaching negative numbers using... sandcastles! Quite a nice visual way of thinking about it.
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I love this. So well made and clear.
Empty reply does not make any sense for the end user
Empty reply does not make any sense for the end user
Great resource. Fresh way of introducing directed numbers.
Empty reply does not make any sense for the end user
Great thanks. I wonder - why did you choose to multiply before adding and subtracting?
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