A+ Math

A+MathWelcome to AplusMath! This web site was developed to help students improve their math skills interactively. Visit our game room and play exciting games like Matho and Hidden Picture...Test your math skills with our Flashcards! Try out the Math Word Find puzzle and more.

Age Calculator

mathcatsHow old are you? Learn your age, to the day, hour, minute or second with this Age Calculator by Math Cats.

Calculators On-Line, Martindales

MartindalesCurrently the Martindale's Calculators On-Line center contains over "24,335" Calculators & Spreadsheets, over "4,125" Courses, Lectures, Manuals, Handbooks, & "1,000's" of Movies, Videos, Simulations & Animations. Created by over "8,550" very "CREATIVE" Individuals, Businesses & Tax Supported Entities World Wide.

Calculus Help

CalculusHelpThis Calculus Help site, written and maintained by W. Michael Kelley, offers content for both advanced high school students and college level calculus students.

Compound Interest Simulator

IlluminationsThis Compound Interest applet will allow you to investigate savings account earnings, credit card debt, and a stock market simulation.

Conversion Tables

ConvertWelcome to Convert-Me, where you can easily perform online conversions for many measurement systems both commonly used like metric and U.S. Avoirdupois and quite exotic like Ancient Greek and Roman.

Elapsed Time Calculator

mathcatsCount down the time to a date in the future, or find the Elapsed Time since a date in the past.

Geometry Step-by-Step

GeometryGeometry Step-by-Step from the Land of the Incas provides an eclectic mix of sound, science, and Incan history in order to raise students' interest in Euclidean geometry. Visitors will find geometry problems, proofs, quizzes, puzzles, quotations, visual displays, "scientific speculation", Cuzco, Machu Picchu, Lost City of the Incas, Nazca Lines, the Quipu, the Lord of Sipan, Caral: the oldest civilization in the Americas, and more.


MathworldMathWorld is the web's most extensive mathematics resource!

Purplemath – Algebra Resources

Purplemath’s algebra lessons are written with the student in mind. These lessons emphasize the practicalities rather than the technicalities, demonstrating dependable techniques and pointing out common mistakes. The lessons are cross-referenced to help you find related material, and a "search" box is on every page to help you find what you're looking for.

Roman Numerals

RomaThe Romans were active in trade and commerce, and from the time of learning to write they needed a way to indicate numbers. The system they developed lasted many centuries, and still sees some specialized use today.


StatisticsStatistics.com is the leading provider of online education in statistics, and offers over 100 courses in introductory and advanced statistics. Students from around the world study with leading authorities in statistics via private discussion boards on flexible schedules.  Teaching assistants provide individual feedback on practical exercises.  Statistics.com offers CEU's, records of course completion, and certificate programs in advanced statistical study.

Trigonometry: Math World

MathworldTrigonometry is the study of angles and of the angular relationships of planar and three-dimensional figures. MathWorld takes an in depth look at the wonders of trigonometry and is the web's most extensive mathematics resource!

Visual Calculus

VisCalcThe Visual Calculus collection has been expanded to include tutorials, interactive modules (LiveMath, Java, and Javascript) which can be used by either students or faculty and includes detailed instructions for TI-85 and TI-86 graphing calculators. As an additional aid for students, modules containing quizzes and drill problems have also been added.

Visual Fractions

Visual FractionsVisFractions is a tutorial that models fractions with number lines or circles. Fraction games and worksheets are included. Learn to identify, rename, compare, add, subtract, multiply and divide fractions.


WebMathWebMath is a math-help web site that generates answers to specific math questions and problems, as entered by a user, at any particular moment. The math answers are generated and displayed real-time, at the moment a web user types in their math problem and clicks "solve." In addition to the answers, WebMath also shows the student how to arrive at the answer.