Thursday, September 8, 2016

Extraneous Roots

Mr. Honner takes issue with the grading rubric for a math problem:

Mistakes, even if they are made by the examiners, are useful learning grounds. Here are a couple more problems that he unearthed.

James Tanton also addresses some of these issues (issues with domain, extraneous solutions etc.) in a readable essay (pdf).

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