Johannes Kepler is known for his many mathematical discoveries, and he was quite keen on calculating areas and volumes. This interest stemmed from an incident that occurred when he married for the second time in Austria. He had purchased a barrel of wine for his wedding, and was angered by the wine merchant's method for measuring the volume. Inspired by this exchange, Kepler began his study of how...

How did people learn geometry in Georgian England? It was different than in our own time, to be sure. This feature from Loci, the online publication of the MAA Mathematical Sciences Digital Library offers a bit of detail on the matter, courtesy of the geometry copybook of a boy named Thomas Porcher. This particular feature was written by Benjamin Wardhaugh from the University of Oxford. In the...