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Radians are an important alternative way to measure angles. Radians are more common than degrees in science and engineering applications.

When students understand math is a tool for solving problems, and start using the tool in that way, it is less likely to be boring. This video suggests some ways that is possible.

JSXGraph is a method for producing interactive graphs on a Web page, using javascript.

Math helps to explain a mystery concerning the Beatles’ song, “A Hard Day’s Night”.

Here’s a more efficient, and better looking wind turbine generator.

In this Newsletter:

1. Math tip: Logarithms – a visual introduction
2. Is the Gateway Arch a parabola?
3. Visual Math
4. IntMath Poll result – Why are you here?
5. Engineering and evolution
6. Recent feedback
7. Final thought – Habits

Logarithms are just indices written down on the line. Here’s a visual explanation of logs.

Here’s a beautifully done video showing some of the math in nature.

The Gateway Arch looks like a parabola on first glance. But is it?

Check out these dedicated math geeks.