Resource of K-12 websites

Two great resources that create lists of sites for teachers and parents of kids in K-12. Each list has strict rules for listing so you won’t have to wade through or surf endlessly for good resources.

http://www.sitesforteachers.com/index.html
Teacher's resource and educational material ranked by popularity.
http://www.sitesforparents.com/index.html
Parent’s resource and have an emphasis on parenting ranked by popularity.

Interactive Math Miscellany and Puzzles

Interactive Mathematics Miscellany and Puzzles This as a fabulous Mathematics site with a huge collection of the basic mathematical principles used in Arithmetic, Algebra, Geometry, Games and Puzzles, Logic, Fractals and chaos, Probability, Calculus and Computers. The site is very interactive, the theory nicely presented and well organized. Free, Found at http://www.cut-the-knot.org/index.shtml