Ten Answers: Why Multiplying Two Negatives Is Positive

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Cheng-Yao Lin Southern Illinois University Carbondale

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Kuan-Chun Chen
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Jie Shi Liew
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Ho-Feng Chueh
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Why does multiplying two negative numbers result in a positive number? Here are ten diverse instructional approaches teachers can use to help students understand and explain this concept.

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Mathematics Teacher: Learning and Teaching PK-12
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