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One of the most popular metaphors in mathematics, which allows students to grasp the idea of the sequence of numbers—for instance, the further apart two numbers are from each other, the greater the distance between them.
The number line is a powerful visual tool that enables us to make sense of the arithmetic of integers—for example, why the difference of two negative numbers can produce a positive number.
via giphy
by MathPlus December 19, 2018
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