Manipulation Resources

http://nlvm.usu.edu/en/nav/vlibrary.html

This is one of the best websites I've found. It is a forum of virtual manipulatives. They have it really well organized so that you can easily find exactly what you're looking for. The manipulatives are categorized by content standard and by grade level. You can search the content standard at all grade levels, the grade level using all the standards, or you can pick a specific standard and grade level. Each manipulative has a link that has parent/teacher information. This is extremely helpful because they list the objectives, lesson plan, extension activities, assessment, and the materials that go along with the manipulative. Another nice bonus is that each manipulative can be translated into spanish.

http://www.explorelearning.com/
This page is a collection of “gizmos” that help in teaching a lesson. It is very well organized, so finding a gizmo for a specific lesson is easy. From the home page there are two drag down menus, one is math, one is science. By using the math menu, you can pick grade levels and then choose a math type.
You may need to install shockwave player, but its worth it because these gizmos are a really good addition to any lesson.

http://www.ct4me.net/math_manipulatives.htm

This website is good because it has a short introduction section that defines what a manipulative is, the pros and cons of manipulatives, and what role manipulatives play in the classroom. After that there is a list of manipulatives that they find to be helpful. It isn't as organized as the first website I listed, but they do break them up into categories like basic computation, algebra, calculus, and statistics. This website also has links to a lot of other helpful things for teachers, some being math projects, software, news, and journals.