Barack Obama speaks to the 146th Annual Meeting of the National Academy of Sciences
Calculus Made Easy: Being A Very Simplest Introduction To Those Beautiful Methods Of Reckoning Which Are Generally Called By The Terrifying Names Of The Differential Calculus And The Integral Calculus (2nd Ed., 1914), by Silvanus P. Thompson ~ What one fool can do, another can (ancient Simian proverb)
An ‘Accordion’ of Wood and Glass ~ You can earn a lot of money from derivatives (not these derivatives, these derivatives)
Ed Burger does Calculus in 20 minutes (part 1), (part 2)
Tricki: a repository of mathematical know-how ~ now live
Two coffee drinks I would like to make ~ 1 and 2
Periodic tables… Periodic table of mathematicians ~ Periodic table of videos ~ Tait’s first seven orders of knottiness
Deep Down Inside, We All Love Math ~ T-shirt for sale
Position cues from a moving shadow ~ who doesn’t love a good optical illusion?
Pie-cosahedron and fractal pecan pie ~ Math is yummy
Martin Gardner puzzle from the most recent College Mathematics Journal. Add one line segment to make the following statement true: 5+5+5=550 (there are two correct answers)
David Richeson: Division by Zero 
