Math Education

On -1/12, adding infinitely many numbers, and Phil Plait’s rash and incorrect claims 17 January 2014

This should be news to nobody, and I can’t believe I have to say it out loud, but the sum:


is not well-defined. The series diverges. It does not make sense in any mathematically rigorous way to say that it “equals” anything.
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Responding to the New York Times off-base math education editorial 10 December 2013

Math doesn’t have to be boring, but it does have to be math
The New York Times editorial board doesn’t understand the first thing about mathematics, and this is a big problem.

Learning Math From Software Is Like Learning Parenting
Skills From Second Life
29 June 2012
Why Johnny Can’t Add Without a Calculator 25 June 2012

Technology is doing to math education what industrial agriculture did to food: making it efficient, monotonous, and low-quality.
How and why graphing calculators, educational software, interactive whiteboards and the like undermine actual learning in elementary, middle and high schools.