Twenty Questions about Mathematical Reasoning

Lynn Arthur Steen, St. Olaf College The concluding chapter in NCTM's 1999 Yearbook which is devoted to mathematical reasoning: Developing Mathematical Reasoning in Grades K-12. Lee Stiff, Editor. Reston, VA: National Council of Teachers of Mathematics, 1999, pp. 270-285 We begin with two warm-up questions. First, why is mathematics an integral part of…
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