Math

mathCalculator

Conversion Calculator - Interactive calculator converts between various units of measurement--area, volume, length/distance, cooking, time, and more.

Cool Math 4 Kids - Games for learning math facts, plus activities for learning fractions and geometry.

Create a Graph - An easy online tool for making all sorts of charts and graphs.

Math Dictionary - Easy to understand explanations for dozens of math terms.

Math Flashcard Creator - Make your own flashcards for addition, subtraction, division and multiplication.

Math is Fun - Explains math in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents.

WebMath - Covers K-8 math, general math, Algebra, Trig & Calculus, etc, and doesn't only give the answer but shows how to arrive at it.