How a translation of Peano's counterexample to the 'theorem' that a zero Wronskian implies linear dependence can help your differential equations students

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Imagine an urn with two balls, each of which may be either white or black. One of these balls is drawn and is put back before a new one is drawn.

A man is walking across a bridge, when a boat passes under the bridge.How rapidly are the boat and the pedestrian separating after the boat passes under the bridge?

Prove that the area of a regular polygon can be given by the product of its perimeter and half the radius of the inscribed circle.

Page from al-Khwarizmi's algebra text written in about 825. The proof of the rule for solving a quadratic equation of the form "squares plus roots equal numbers".

A certain bishop ordered that 12 loaves be divided among his clergy.

Having been given the perimeter and perpendicular of a right angled triangle, it is required to find the triangle.

Page 7, Who's That Mathematician: Images from the Paul R. Halmos Photograph Collection: Blackwell, Halmos, Boas, Bollobas, Bombieri, Mumford, Bonsall, Rankin

Poster of Banneker, with a brief description of his life and work.

This is a collection of plates that Leonardo da Vinci created to illustrate De divina proportione of Luca Pacioli.