University of California, San Diego (UCSD) Study Finds Twist to the Story of the Number Line: Number Line Is Learned, Not Innate Human Intuition

4/26/2012 7:04:08 AM

Tape measures. Rulers. Graphs. The gas gauge in your car, and the icon on your favorite digital device showing battery power. The number line and its cousins -- notations that map numbers onto space and often represent magnitude -- are everywhere. Most adults in industrialized societies are so fluent at using the concept, we hardly think about it. We don't stop to wonder: Is it "natural"? Is it cultural?

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