Enthusiast Jenny Eather is the creator of an unique online resource for grade school mathematics students. Called A Maths Dictionary for Kids, the site has over 400 entries arranged alphabetically that explain key math terms and concepts in a simple, straightforward manner. Besides giving definitions, each topic has an interactive activity that demonstrates its use and significance. Some of the...

The National Institute of Standards and Technology has recently updated its online Dictionary of Algorithms, Data Structures and Problems. The dictionary takes the form of a hypertext alphabetical list of terms dealing with algorithmic techniques and functions (e.g., Ackermann's Function), data structures, archetypical problems (e.g., "traveling salesman"), and related definitions. Nice features...

It's hard to believe it's all free! This trove of information from thefreedictionary.com offers all sorts of information on math. From algebra and integers to derivatives and polynomials, it's all here. By scrolling over or clicking on a link, the visitor is treated to a sometimes whopping amount of information about the given topic. For those simply interested in math, math lovers, or possibly a...

Harcourt School Publishers maintains this glossary of mathematics terms, with custom glossaries for each grade level from kindergarten to sixth grade. Students are not only provided with definitions but also pictures and animations that explain the meaning of the word. Some of the terms are not strictly related to mathematics; for example, units of measurement and measuring devices are also...