I'm a Math 8 teacher doing a unit on Algebra. I use technology in my instruction (teach with touch-screen tablet computer + digital projector, have a class website with videos, games and resources, blog, etc) but want to find more student-centered activities utilizing technology to promote understanding and engagement in mathematics.
Does anyone have any ideas or want to collaborate on a technogy-rich Algebra unit?
This site has some examples (assignments and student work) of using technology in the math classroom.
Hopefully it will be of some help.
For more generic resources you could look at http://www.freetech4teachers.com by Richard Bryne - he covers some awesome free tech resources to use in classrooms.
We also recently launched a FREE math practice program for teachers you could check it out at www.tenmarks.com/teachers and see if its a fit :)