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A Probability Puzzle That You'll Get Wrong

a weekly roundup of cartoons, links, and nefarious probability brainteasers

Like the rest of the math internet, I recently fell in love with this rascal of a problem… 573 more words



Sumaze and Sumaze 2 are free mathematics apps available in the Google Play Store or for iOs.  The games and the graphics are simple but elegant.   191 more words


PSLE Chinese Listening Exam (mrbrown) Very Funny!

Recently, there is a PSLE Chinese Listening Exam that does not make sense.

Question: Student A bought a new clothes. Student B asks Student A: “You bought new clothes?” Student A said: ” No, it is sewn by my mother, do you think it is beautiful?” Student B said: It is very beautiful, I didn’t knew your mother could sew?”. 65 more words


Recommended Books for Spectral Sequences

So far the most comprehensive book looks like McCleary’s book: A User’s Guide to Spectral Sequences. It is also suitable for those interested in the algebraic viewpoint. 84 more words


Interesting Facts about Green's Theorem

Firstly, Green’s Theorem is named after the mathematician George Green (14 July 1793 – 31 May 1841). Something remarkable about George Green is that he is almost entirely self-taught. 236 more words



#gmttc is the official hashtag for the Global Math Task Twitter Challenge.  Classrooms around the world are invited to participate by solving the problems that are tweeted and/or tweeting out their own.   123 more words