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)
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?
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)