Mathematics Projects Lesson plans and activities on various topics. Grade levels are specified beside each project. Also visit their Mathematics Center for more resources. Eisenhower National Clearinghouse K-12 math and science curriculum resources include lesssons, links and more. Shockwave activities help visualize and explore equations and graphs.
Teachers can also find discussion forums, lesson plans, and Web page hosting and creation.
You may browse or search for a particular topic. Many resources are available to download in Adobe Acrobat format. Math Challenges for Families Includes interesting math problems for junior high school students and their families to try together. Includes hints, multiple solutions for each problem, and links to related resources for further exploration. Available in Spanish.