10ticks [ Kids/Teens ] - Games, puzzles, quizzes, and homework help. Requires a free registration. http://www.10ticks.co.uk/hey_yall.asp

Answer Ace: Math Problem Solver [ Kids/Teens ] - Enter arithmetic and basic algebra problems and get step-by-step help; like having your own math tutor. Free trial. http://www.mathsupport.com/

Free Math Help [ Teens/Mature Teens ] - Provides games, activities, lessons, calculators for students studying algebra, geometry, calculus, or trigonometry including a daily problem. http://www.freemathhelp.com/

Free Math Help Online [ Teens/Mature Teens ] - My Math Man gives free algebra and geometry 2-3 minutes audio video lessons from textbooks you use in class with interactive practice. http://www.mymathman.com/

Free Mathematics How-to Library [ Teens/Mature Teens ] - Offers help with algebra, geometry, calculus, fractions, money, and trigonometry problems. Includes worked examples and files for download with more information and exercises. http://www.teacherschoice.com.au/mathematics_how-to_library.htm

GoMath [ Teens/Mature Teens ] - Online math tutoring service designed primarily for preparation for the SAT. Includes e-mail help within 24 hours, interactive quizzes and games, and help organized by topic. http://www.gomath.com/

Hotmath [ Teens/Mature Teens ] - Solutions and problems in popular US textbooks, algebra through calculus. Solutions include hints and explain steps up to and including the final answer. http://www.hotmath.com/

Math Forum: Ask Dr. Math [ Kids/Teens/Mature Teens ] - A question and answer service for all school levels, with a searchable archive and FAQ. http://mathforum.org/dr.math/

Math Made Fun [ Kids/Teens ] - Worksheets allow for practice with arithmetic, algebra, and geometry. Includes answers. Also, has some general formulas and tutorials. http://www.hickammath.com/

Math Online [ Teens/Mature Teens ] - Homework help site for middle and high-school age students staffed school nights by high school math teachers. Posted questions receive a response before bedtime. Previous questions and answers are archived for browsing. http://www.mathonline.org/

Revolutionary Mathematics Tuition Software [ Kids/Teens/Mature Teens ] - This mathematics tutoring software program automatically finds students weak areas and fills in the gaps. http://www.mathematics.net.au

Talking Arithmetic Tutor [ Kids/Teens ] - Free demo download shows students step by step solutions to addition, subtraction, multiplication and division problems. http://www.sssoftware.com/TalkingArithmeticTutor/index.html

Webmath [ Teens/Mature Teens ] - Offers interactive homework help in pre-algebra, algebra, geometry, trigonometry, calculus, statistics, and real world math. From DiscoverySchool.com. http://www.webmath.com/