Math is Fun is a free website that offers math games, puzzles, and tutorials. One of the tutorial resources that they offer is an illustrated mathematics dictionary. The Math is Fun dictionary offers more than 700 definitions of mathematics terms. All of the definitions include an illustration. Nearly 200 of the definitions include an animation. Some of the animations are interactive tutorials.

Applications for Education
For some students one of the obstacles to understanding how to solve a mathematics problem is understanding the vocabulary used in the problem. Once they understand the meaning of terms they have an easier time understanding and solving the problems. Having a glossary of terms often helps students get to the heart of a mathematics problem.