See also:

• Kids and Teens: Health: Conditions and Diseases: Dyscalculia  (3)
• Kids and Teens: School Time: Science  (4,993)
• Kids and Teens: School Time: Social Studies: Economics  (70)

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A+ Math - [ Kids ] - Helps students improve their math skills interactively with flashcards and games. Also provides worksheets and homework help.

The Abacus: The Art of Calculating with Beads - [ Kids/Teens/Mature Teens ] - Introduces the abacus, relates its history, and shows how to perform basic mathematical operations on it. Also answers questions about the ancient tool and shows how to build one with Legos.

All Elementary Mathematics - [ Teens/Mature Teens ] - An online mathematical high school. Arithmetic, algebra, geometry, trigonometry, functions and graphs, analysis. Theory and solving problems. Also has practice exams and math jokes.

Allmath.com - [ Kids/Teens ] - Features free flashcards, a magic square game, biographies of mathematicians, and other resources.

Amazing Mathematical Object Factory - [ Mature Teens ] - Offers tutorials on a variety of math topics including subsets, permutations, and Fibonacci sequences.

Apples4theteacher.com - [ Kids/Teens ] - Offers games on counting, telling time, making change, measurement, and shapes.

Base 10 Blocks - [ Teens/Mature Teens ] - Uses a visual computer program to teach the concepts of adding and multiplying in various mathematical bases. (Requires java..

Convertalot - [ Kids/Teens/Mature Teens ] - A collection of free Java-based measurements converters, calculators, and unit translators.

ConvertIt.com - [ Kids/Teens/Mature Teens ] - Calculators for a variety of subjects, including measurement conversion, interest, distance, time zones, and currency.

Coolmath4kids - [ Kids/Teens/Mature Teens ] - Math games, problems, calculators, puzzles, and fun and for all levels.

Cynthia Lanius' Fractals Unit - [ Mature Teens ] - Explains the unusual concept of partial dimensions and shows comparisons to a dot, line, plane and cube.

Dositey.com - [ Kids/Teens/Mature Teens ] - Interactive lessons and exercises, open-ended questions, printable worksheets, and challenging problems sorted by topic and grade range.

Fact Monster - Math - [ Kids/Teens ] - Learn about numbers, measurement, money, tables and formulas. Includes conversion calculator, games and quizzes.

Fugues of the Well-Tempered Clavier - [ Teens/Mature Teens ] - Interactive Director movie comparing a fugue by Johann Sebastian Bach to a fractal.

GCSE Maths - [ Teens/Mature Teens ] - Provides detailed descriptions of all the common subjects, concepts, and theorems, with examples and graphics to help explain the material.

Harcourt Math Glossary - [ Kids ] - Animated and illustrated definitions of math terms for elementary school students. Organized by grade level and alphabetically. [Requires Flash.

If You Are Good at Math - [ Mature Teens ] - Provides information on the kinds of jobs available for kids interested in math.

Interactive Mathematics - [ Kids ] - Online exercises through which children can explore and examine math concepts while at home.

Kids' Place: Roz's Math-o-Rama - [ Kids/Teens ] - Features opinion polls, study tips, online math games, word problems, glossary, and interactive puzzles. Includes different sections for levels from kindergarten through the sixth grade.

Math Flash - [ Kids ] - Free downloadable flash card game for children aimed at improving their mathematics skills with lessons aimed at various age groups.

Math for Morons Like Us - [ Teens/Mature Teens ] - Covers concepts that are used in algebra and geometry, as well as an overview of calculus terms. Includes explanations on how to use the number line, working with formulas, fractions, square roots, graphs, parallel lines, triangles and areas. Also has a message board and short quizzes.

Math Forum: Student Center - [ Kids/Teens/Mature Teens ] - Ask Dr. Math questions, or try your hand at the weekly puzzlers.

Math Goodies - [ Kids/Teens/Mature Teens ] - Features interactive math lessons, homework help, worksheets, puzzles, message boards, and newsletters.

Math Help: Exercises and Activities - [ Kids/Teens/Mature Teens ] - Interactive activities and quizzes in basic arithmetic, algebra, and trigonometry. Also includes brain teasers and puzzles.

Math in Daily Life - [ Kids/Teens/Mature Teens ] - Virtual exhibit looks at the ways people use math every day, from cooking to planning for retirement.

Math Worksheets - [ Kids/Teens ] - Features printable worksheets for students to practice with.

Math.com - [ Teens/Mature Teens ] - Offers free math lessons and homework help, with an emphasis on geometry, algebra, statistics, and calculus. Also provides calculators and games.

Math-Knowledge.com - [ Teens/Mature Teens ] - Provides help in understanding math from the natural numbers to probability calculus.

mathmistakes.info - [ Teens/Mature Teens ] - A selection of common mistakes made by students in algebra, trigonometry and calculus.

A Maths Dictionary for Kids - [ Kids/Teens ] - An animated, interactive math dictionary defining common math terms and concepts. [Requires Flash 5.

Maths Is Fun - [ Kids/Teens ] - Includes lessons, games, puzzles, and offline activities.

Maths on the Web - [ Kids/Teens ] - Collection of exercises and puzzles for all ages and abilities.

Mathsforkids - [ Kids/Teens ] - This site has been created so that students can have fun and practice math. Includes lessons in addition, subtraction, multiplication, geometry.

MathSite - [ Teens/Mature Teens ] - Interactive exhibits include polygon dissection and stick sorting.

MathStories.com: Word Problem Solving Strategies - [ Kids ] - Tips for solving word problems for K-5th graders.

Mathwizz.com - [ Kids/Teens/Mature Teens ] - Interactive worksheets and quizzes in basic math, pre-algebra, algebra, geometry, and statistics. Find calculators to compute interest and conversion tools for currency, area, temperature, and other units of measurement. Also runs a weekly math contest.

More Mathematics than Science - [ Teens ] - Learn how to use expressions to represent numbers, work with variables and create special drawings to represent equations. Also has a brief introduction to trigonometry and curve fitting. Includes interactive graphs.

Online Math Applications - [ Kids/Teens ] - Explains the role of math in investing, music, history, science, and travel. Includes stock simulation game.

Online Math Learning - [ Teens/Mature Teens ] - Learn basic concepts behind arithmetic, algebra and geometry. Includes some SAT test preparation help and math trivia.

Pi R Squared: Fractals - [ Mature Teens ] - Explains the properties of fractal graphic images that can be created with special formulas. Also, introduces chaos theory and infinity. Offers free online help.

Plot the Robot - [ Kids/Teens ] - Activity site involving multiplication and calculator work. The answers are coordinates which can be joined in sequence to generate simple pictures.

Powers of Ten - [ Teens/Mature Teens ] - Produced by Charles and Ray Eames, the video "Powers of Ten" has been converted into web images. Explores over 42 powers of ten in a series of images, beginning with a photo of someone lying on the grass. Shows the scale of the universe and atoms.

Ribbit's Math Ventures - [ Kids/Teens ] - Math problems that tell a story about a frog named Ribbit. For K-8.

Richard Bowles' Math Tutorials - [ Kids/Teens/Mature Teens ] - Learn about integers, positive and negative numbers, ratios, finding average values, statistical formulas, probability, simultaneous equations, quadratic functions and the binomial distribution.

Teach R Kids Math - [ Kids ] - A large collection of interactive worksheets that allows kids to practice basic math skills.

Themathlab.com - [ Teens ] - A collection of educational math games and lessons for pre-algebra, algebra, and geometry. Includes practice problems and drills, a math dictionary, and a humor section.

Word Problems For Kids - [ Teens ] - Have fun solving problems concerning rates, measurements, shapes, money, fractions and time. Page includes hints and solutions.

XP Math - [ Kids/Teens/Mature Teens ] - Features a collection of math games, forum,and a list of jobs that need math.