Math Forum is a good site for educators. If you are unsure about how to integrate an activity into the unit, ask for a second opinion. Get involved in the discussion groups. 21st Problem Solving Problem solving has become the key issue in the mind of educators. Problem solving is everywhere in education but it has primarily been thought to only be math related.
Students can learn good problem solving techniques with the ideas provided here.
Teachers can use this site to learn what techniques they should be modeling to their students. This has links to ideas for classroom projects and opportunities to talk with other educators. This provides the communication that is needed today. Math Teacher Link provides educators with interactive tutorials, ideas for classroom lessons and resources, news on upcoming events, and also a message board to communicate. The teacher can communicate with other educators through this site to get ideas or advice.