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1. Why Understanding 1 3/4 ÷ 1/2 Matters to Math Reform, pp.178-82 (Deagan, Brover, & Farina, 2001)
3. What Community College Developmental Mathematics Students Understand about Mathematics, Part 2: The Interviews (Givvin, Stigler, & Thompson, 2011)
4. (Executive Summary), (National Center on Education and the Economy, 2013)