HEATKEYS

Easiest way to plot functions! Just type fooplot.com/sin(x) or your function into your browser.

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

Online graphing and solving calculators for functions, equations, and inequalities; get complete function graphs showing asymptotes and discontinuities automatically, plus tutorial analysis for calculus, precalculus, and algebra; includes 1D, 2D, and...

Free Online Scientific Notation Calculator. Solve advanced problems in Physics, Mathematics and Engineering. Math Expression Renderer, Plots, Unit Converter, Equation Solver, Complex Numbers, Calculation History.

QuickMath allows students to get instant solutions to all kinds of math problems, from algebra and equation solving right through to calculus and matrices.

Explore math with desmos.com, a free online graphing calculator

The University of Rhode Island

LivePhysics.Com - Online Physics Problem Solver

WebMath is designed to help you solve your math problems. Composed of forms to fill-in and then returns analysis of a problem and, when possible, provides a step-by-step solution. Covers arithmetic, algebra, geometry, calculus and statistics.

Coolmath has a ton of cool math games and puzzles, lots of really clear math lessons (arithmetic, fractions, decimals, algebra, etc.), fractals, geometry, tessellations and more. Tons of very cool math stuff for kids, teens, parents and teachers too!

Free math lessons and math homework help from basic math to algebra, geometry and beyond. Students, teachers, parents, and everyone can find solutions to their math problems instantly.

Learn mathematics while you play with it! Math lessons that include Flash, java applets, Scientific Notebook and LiveMath to improve your math.