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Monthly Archives: January 2016

Flipping absolute values

Posted on January 22, 2016 by David Butler

Every semester I talk to students about what the absolute value does to the graph of a function. Basically, the graph of y = |f(x)| is the same as the graph of y = f(x), but with all the bits below the x-axis flipped to be above the x-axis. I’ve always simply drawn some graphs […]

Posted in Being a good teacher | Tagged physical manipulatives, teaching methods |

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