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DRAFT - 12 Sept 2008 Susanna S. Epp What Is a Variable? Many years ago, when I was just beginning to think seriously about issues involved in teaching mathematical reasoning, I happened to read an article by the mathemat
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Document Date: 2015-07-13 18:41:55
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DRAFT - 12 Sept 2008 Susanna S. Epp What Is a Variable? Many years ago, when I was just beginning to think seriously about issues involved in teaching mathematical reasoning, I happened to read an article by the mathemat