AAA Math.
Find explanations of mathematical topics, practice problems, and challenging games organized by topic and grade level.

The abacus is a calculator whose earliest known use is circa 500 B.C. by the Chinese civilization. Addition, subtraction, division, and multiplication can be performed on a standard abacus. This site offers instructions on the use of the abacus.

Brain Teasers
Test your wits each week with a new math puzzle … check back thefollowing week to see how smart you are!
This site is fully interactive and allows the user to sharpen basic math skills, play math-related games and explore new math concepts.

Figure This! Math Challenges for Families.
Challenges families or classrooms to solve math and spatial problems; great for the “non-mathematician.”

Flashcards for Kids.
Online flashcards with a variety of mathematical puzzles to help build kids’ skills.

Gymnasium for the Brain
Puzzles and math problems, including warm up puzzles and pattern exercises, to help both children and adults sharpen their minds.

Indexes to Biographies.
Alphabetical and chronological index to mathematicians.

Johnnie’s Math Page
Johnnie’s Math Page has activities to help with subjects like fractions, geometry, multiplication, statistics, probability, measurement, and numbers. Each topic has a range of activities labeled by level from primary math to intermediate math.

Math Cats.
Emphasizes the logic and beauty of math, rather than drills and practice. Provides open-ended and playful explorations of important math concepts through on-line games, off-line crafts and interactive projects. Requires a free MicroWorlds download.

Math is Fun
Examples are given for how to do basic math using text and diagrams.

Math League Help Topics.
This is a help resource for grades 4–8.

Math Playground
Math Playground is an educational site for elementary and middle school students where you can practice your math skills, play a logic game, and have some fun!

Maths Dictionary for Kids
An animated, interactive dictionary for students which explains over 500 common mathematical terms using simple language and visual examples.
Play online math games like Math Wheel (math terms), Jeopardy (addition), and Finding Nemo (direction) or generate custom math worksheets on topics such as telling time, fractions, money, and many more!

Measurements Converter.
A conversion table for weight, time, length, area, speed, pressure, and other things.

National Library of Virtual Manipulatives
Interactive math tutorials and challenges including algebra, geometry, measurement, and probability, as well as lesson plans in Spanish and English.

Savings Quest
Go on a savings quest. Pick a character, pick a job, set up a budget, and then try to reach your savings goal. It’s a fun way to learn about budgeting and savings.

The Mint
Learn about money: earning it, saving it, spending it, investing it, tracking it and safeguarding it. This site has information for teachers and parents as well.