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March 14, 2012

Pythagorean Video II: Proving the Theorem

I was planning to redo this video, but with the Julia Robinson Festival coming up on Sunday, it’s going to be a while before I get it together, so here it [...]

Posted In : , Lesson, Video
October 28, 2011

Math Consulting: Games to Content, by way of Questions

We’ve been loving running math workshops for teachers. First of all, teachers are awesome: they’re some of the hardest working, most motivated people out [...]

Posted In : , Lesson, Video
November 27, 2010

Math Doodling: Star Polygons and Binary Trees

I always find myself repeating that math starts with play and proceeds to questions; these are the seeds from which the trees grows. A new, beautiful example [...]

Posted In : , Link, Video
September 24, 2010

Infinite Staircase

I’ve been thinking about infinity a lot lately, and how it relates to something called the Droste Effect. It was named for the Droste cocoa box. Here’s the [...]

Posted In : , Link, Photo, Regular, Video
April 1, 2010

What skills do you need in order to teach well?

I often stress the perspective that the first thing you need do be a great teacher is love: love of your subject, love of teaching, love of learning. The [...]

Posted In : , Regular

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Recent Posts

  • Aperiodic monotiles exist! March 21, 2023
  • Family Math Night Resources February 23, 2023
  • The award-winning lesson plan – the Billiard Ball Problem February 17, 2023
  • Another 21st Century Pattern Block Play Idea January 5, 2023
  • Math Play Every Day! January 4, 2023
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