square root of negative one teach math

I attended the precalculus morning sessions at twitter math camp. Among other things, we made a list of topics that can typically be problem...

If you are a math teacher, this has probably happened to you . . . Someone you know has come across a problem involving math and they ask yo...

I had a great summer work day with my colleagues this week. We worked on a plan of attack for the changes coming our way, and there are a lo...

I am going to interrupt this blog's usual programming for a few moments of whining and complaining. Then I will get over it. So . . ...

In college, one of my professors told a room full of future teachers that our second-hardest day of school would be our first day . . . bec...

I wanted to help my students practice evaluating different trig ratios for special angles, so I made two sets of cards: ...

This is not new. You can read about it here , here , here , and  here , just to name a few.  As of a few months ago, it was new to me. ...