Bar modelling is not a method of calculation. It provides a diagram to help understand what working out should be done to solve a problem. Bar modelling is used to help understand how to solve ...
NARRATION:Back in the deepest, darkest depths of time, there lived a great mathemagician called Hypatia. Numbers fell under her spell one by one. With them, Hypatia could do anything. Now Hypatia is ...
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