Posted in Early math, Education reform, Problem solving, Proofs Without Words, Puzzles by: admin

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03 May

In passing, I totally disagree with Tanya's thesis that "People who think make better decisions, whether they want to buy a house or vote for a president." That's factually wrong. This would be rather presumptuous to assume that the ones who disagree with one's choice of a president give their vote thoughtlessly. I am certain Tanya did not mean that.

Posted in Algebra, Complex numbers, geometry, Math activities, Problem solving, Weekly report by: admin

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04 Apr

The present collection supplies a perfect illustration to the fact that even the most simplest of the problems may be looked at from various angles. I wish that the authors of school textbooks that often include only answers or "solutions to the odd-numbered problems" paid more attention to the possibility of alternative view points.

Posted in Algebra, Combinatorics, Problem solving, Trigonometry by: admin

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01 Apr

TweetI came across the following problem several days ago but hesitated to write about it until April 1st. It is simple, practically trivial, and still, after doodling with it for some time, I was left with an open question. If it appears too trivial, even unworthy of mention, do please make an allowance for the […]

Posted in Beautiful math, Curiosity, geometry, Problem solving, Simple math by: admin

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26 May

TweetPaul Brown, an Australian math teacher and author of Proof, a book that I may characterize as a well-written guided introduction into that most fundamental activity, has brought to my attention a recent post at the Futility Closet blog, The Jeweler’s Observation, which I fully reproduce below: Prove that every convex polyhedron has at least […]