Math games for counting, subtraction, multiplication, place value, and comparing number values.

Resources for students collected at Los Alamos National Lab.

A collection of interactive math games with supporting worksheets.

A math dictionary defining common math terms and concepts. Includes practice with activities and animations. [Requires Flash 5]

Over 5000 free printable worksheets categorized by grades. Includes practice sheets for algebra, arithmetic, fractions, decimals, and sequences.

Interactive Director movie comparing a fugue by Johann Sebastian Bach to a fractal.

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.

Math problems that tell a story. Clues are provided to help with solving.

More than 3,500 word problems for K-5th graders.

What are the odds of hitting the jackpot? Find out when you learn how to determine probability.