Research & Service 
"Thought
must never be subordinated to any dogma, political party, passion,
interest, preconceived idea, to anything indeed, except
the facts
themselves, because, for science, to
be subordinated means
to
die." 
Henri
Poincaré


Work

My
interests include real algebraic geometry and ordered algebraic structures.
Here is some recent work: 

I
am also interested in supporting K12 educators; see the links to LaMSTI above; also see
MathVision Lab. I
have posted some resources for teachers of teachers at the Secondary
Math Site. Some of my early thoughts about math reform (circa
1996) are here. Some other downloadable
stuff (not uptodate) is here.

