David Cordeau, a teacher at Roslyn Middle School, was convinced that the key to unlocking algebra was making it fun.

An education consultant planted a seed in my mind several years ago about the usefulness of the triple Venn diagram. She showed the school staff one similar to the one on the left and argued that ...

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Correlation has never looked this cute. Google created an interactive illustration in honor of the 180th birthday of logician and philosopher John Venn — best known, of course, for inventing the ...