MadMath

Here's a very nice cover story from NYC's alternative newspaper, the Village Voice, basically on the subject of my math teaching job...

Here's an exercise that I'm planning to use in my remedial arithmetic class in the near future. The question is: For each of the fol...

A common basic math exercise is to set up and solve a proportion (equivalence of two ratios, i.e., fractions), often in the context of some ...

You would not believe how often I see this mistake in a basic algebra class:

Tomorrow, of course, are the elections here in the USA for President and other elected positions. One month ago I posted "Bungled Elect...

In my introductory algebra classes these days, I've switched to providing actual proofs for major principles after about the halfway poi...

Today in 1843 William Rowan Hamilton invented quaternions (a way of using 4-dimensional numbers to concisely encode 3-dimensional positions)...