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We are trying to come up with some ideas to show students why dividing a negative fraction by a negative fraction will give a positive number. Just telling the "rule" is not enough. How can we show this with pictures, real models or manipulatives? We looked in several math books and saw models, but could not apply the model to the next problem. One way we came up with was to talk about a football field, and the opponent loosing yards many times. But this was not quite enough. Thanks for your help.
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