Lots of Math Games with math worksheets and math games for the primary child.
Math Playground
May 5, 2006 -- From John King, a teacher from New Jersey, who is not affiliated with the site
Math Playground has hundreds of interactive word problems for students in grades K to 5. Problem-solving games such as Grand Slam Math and Astro’s Adventures make math fun.
A Maths Dictionary for Kids
May 5, 2006 -- From Jenny Eather, a teacher from Queensland, Australia, who is affiliated with the site
Maths A to Z is – an animated, interactive dictionary for students which explains over 400 common mathematical terms in simple language. Includes definitions, animated examples, interactive activities, practice and lots of different calculators. My class really enjoys it.
Math Goodies
May 5, 2006 -- From Gisele Glosser, a reader from Ossining, New York
Math Goodies is a free educational site featuring interactive math lessons, homework help, worksheets, puzzles, message boards and more. We have over 400 pages of fun math activities and resources for teachers, students and parents.
Tim’s Triangular Page
November 2, 2005 -- From Alex, a reader from MA, who is affiliated with the site
This site contains information about triangles for middle-school and high-school students, and includes proofs of some difficult facts about triangles. It also includes a few problems and solutions.
Vectorkids
May 19, 2004 -- From Rick Larson, a parent from Lexington, KY, who is affiliated with the site
Vectorkids provides interactive math tools that allow children to have fun while they learn. Scoreboards help the students gage progress while practicing math flashcards. The site also has an interactive multiplication table and a US State Capitals game.
Math Reference
March 12, 2002 -- From Jennifer, a reader from Arkansas, who is affiliated with the site
This is a reference guide to arithmetic, algebra, geometry, trigonmetry, calculus, physics, statistics, basic c++ along with other helpful information.