Homework Help for Teens - Math

B.J. Pinchbeck's Homework Helper: Math
B.J. is a high school student who collects good homework help sites in many different subjects for DiscoverySchool.com.

MathWorld
This is a very comprehensive site that gives explanations and some examples on topics in algebra, geometry, calculus, trigonometry, probability and statistics, and other areas of math. There is also a nice history and terminology section.

S.O.S. Mathematics
This site provides instruction in algebra, trigonometry, and calculus with complete examples and practice problems with fully explained solutions.

WebMath
This site offers three different kinds of math help: Look through the subject tabs to get help on different kinds of problems in algebra, geometry, trigonometry, calculus, and other areas; browse the completed problems for one that looks like yours; or ask a math expert.

Algebra

Algebra from MathWorld
This site gives explanations and some examples for many topics in algebra, including quadratic forms.

Algebra.help: Lessons
This site provides instruction on basic concepts of algebra such as simplifying, substitution, and factoring. There are practice problems with solutions for each lesson.

Introduction to Algebra
This site offers good basic definitions and examples of expressions, equations, and sequences. It also shows how equations can be simplified and/or solved using basic math operations (addition, subtraction, multiplication, division).

S.O.S. Mathematics: Algebra
This site provides good instruction on basic and advanced principles of algebra. There are also tons of practice problems with solutions throughout.

Calculus

Calculus and Analysis from MathWorld
This site gives explanations and some examples for many topics within calculus.

The Calculus Survival Guide
This site gives very thorough explanations of calculus topics including limits, derivatives, and integrals.

S.O.S. Mathematics: Calculus
This site provides good instruction on basic and advanced principles of calculus. There are also tons of practice problems with solutions throughout.

S.O.S. Mathematics: Differential Equations
This site provides good instruction and practice problems for solving differential equations.

Geometry

Areas, Volumes, Surface Areas
Here is a quick reference for the formulas for area, volume, and surface area of many different shapes.

Basics in Geometry
This site provides basic instruction for geometry concepts as well as a glossary and sample problems.

Elementary Geometry Tutorial
This is a good site that contains clear explanations and practice problems with solutions for understanding geometry principles. There is also a helpful glossary and a test with solutions.

Geometry from MathWorld
This site gives explanations and some examples for many topics in geometry.

Probability and Statistics

Percent and Probability
This site is very easy to understand and includes instruction on topics such as percents, simple and compound interest, and probabilities of outcomes and events.

Probability and Statistics from MathWorld
This site gives explanations and some examples for many topics within the realm of probability and statistics.

Probability Puzzles
Try out these problems to see how well you are doing with probability concepts. All the solutions are provided with explanations.

Trigonometry

S.O.S. Mathematics: Trigonometry
This site provides good instruction on basic and advanced principles of trig. There are also tons of practice problems with solutions throughout.

Trigonometry from MathWorld
This site gives good explanations and some examples on several topics of trigonometry, including the immortal SOH-CAH-TOA