10Minute Math
Some of you may remember the pirapvideo suggested last year. It was the creation of Nathan Shields, a mathematics teacher at Fort Vancouver High School (WA), and a former student of mine.
Nathan has now put together his own creative web site, called 10Minute Math. Its focus seems to be to provide short videos that explore creative sides of mathematics, with a few tangential elements.
Some diverse things of interest to secondary mathematics teacher that are currently available on the web site:
 The video A Mandelbrot the Size of the Known Universe
 A teachermade video about teaching slope
 Instructions for boosting the processing speed of a TI86 by a factor of 3
 A dynamicallycontrolled millipede
 A visual connection of the Golden Spiral to the arrangement of the seeds on a sunflower
 FrogJump game that can be explored using a mathematical strategy
 Instructions for building an inexpensive document camera for use with an LCD projector
 A classroom timer that could prove useful in certain situations
And the content continues to grow gradually.
Well done, Nathan!
