Questions?

Finally, everything from the old blog is here.  The process was actually pretty simple: 1.  Export posts from Wordpress to XML.  I had to...

Paul Lockhart : In particular, you can’t teach teaching. Schools of education are a complete crock. Oh, you can take classes in early child...

I went to bed with this problem swimming around in my mind. I kept trying to figure out how to construct in GeoGebra. I told it to be quie...

I love simple problems with simple proofs.  And I love GeoGebra even more for making it possible for my students to use their induction to ...

I mentioned a while back that I thought a Flip camera may be a pretty decent assessment tool. Today, I had one group having a great discuss...

The camera angle messes with the perspective a bit, but I still find these images interesting. Does it mess with the perspective so much tha...

Two questions: 1.  Is the question clear? 2.  Which image asks it best? #1 #2 #3