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Mathematics

General

Ask Dr. Math  
Answers to math questions are provided by math students and professors from across the country and by mathematicians in industry. First check the archives of previously asked questions.

Coolmath
Select “Kids” for fraction lessons, geometry, fractals and more.  Select “ages 13-100” for algebra, geometry, calculus and trigonometry - from a community college teacher.

Coolmath4kids  
From a college math teacher, lessons on basic math, fractions, fractals, geometry and more.

EMR: Exercises in Math Readiness 
This site offers drills in mental mathematics that test one’s ability to perform calculations in addition, subtraction, multiplication and division – from the University of Saskatchewan.

Fact Monster: Math
This site, from The Learning Network, helps students to perform numerical calculations in subjects such as measurement, money, prime numbers, and Roman numerals. Includes a section on multiplication.

Fractions 
From two math educators in New York and New Jersey, find basic information on a lengthy list of activities involving fractions.

Math.com
Ignore the advertisements and select Homework Help for math, algebra, geometry, trigonometry, statistics, calculus and more.  Or select Ask an Expert for online help, Glossary for a lengthy list of math terms, Calculators & Tools for a variety of calculators, converters and online solvers or Practice for just that.

Math League Help Topics  
Written by two math educators and one mathematician in industry, this site provides information on whole numbers, decimals, fractions, ratio, percentage and more.

Multimedia Math Glossary
Select a grade level, K-6, and then a topic to see a brief explanation of math terms and concepts. Appropriate for older students as well, from Harcourt School Publishers.

Sure Math  
Using information from textbooks, this site claims to provide solutions to solving word problems across the curriculum. Examples of problem solving in algebra, physics and chemistry are included.

WebMATH
Are you stuck on a math problem?  WebMATH would like to help you solve it.  Powered by the Discovery Channel.>

Wolfram MathWorld
Provided by a research scientist and author of scientific encyclopedias, subjects include algebra, calculus, applied math, discrete math, foundations of math, probability and more.

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Algebra

Algebra.Help
Features easy to understand, step by step instructions in each lesson, worksheet and calculation. One can plug in an equation, and it shows all the steps in solving the equation.  The worksheets automatically check answers.

Ask Dr. Math: Elementary School Level  
Questions about algebra and the answers provided by math students, professors and mathematicians in industry.

Ask Dr. Math: Middle School Level  
Questions about algebra and the answers provided by math students, professors and mathematicians in industry.

Ask Dr. Math: High School Level  
Questions about algebra and the answers provided by math students, professors and mathematicians in industry.

Discovery School’s Webmath  
Under review by practicing classroom teachers, this site includes sections explaining equations, plynomials, complex numbers and more.

EMR: Exercises in Math Readiness 
This site offers instructions in algebra from the University of Saskatchewan.

Introduction to Algebra 
From two math educators in New York and New Jersey, find basic information on variables, equations, expressions, sequences and more.

Math League Help Topics  
Written by two math educators and one mathematicisn in industry, select Introduction to Algebra.

The Mathematical Atlas  
This site from a math professor at Illinois University provides information for the higher level algebra student.

Mathematics Lessons That Are Fun! Fun! Fun! 
Algebra lessons are provided by Rice University’s Center for Excellence in Education.

S.O.S. Mathematics: Algebra
Find explanations for a long list of topics from fractions to logarithms and exponential functions. See link to large section on Matrix Algebra. Provided by 3 Math PhDs.

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Arithmetic

Ask Dr. Math: Elementary Archive
Select arithmetic, addition, subtraction, multiplication and division for answers to a long list of questions about these mathematical processes. Or, use the search box to answer your questions.

Basic Math
Select addition, subtraction, multiplication or division for tables and practice activities – from the Homework Help section of Math.com.

Factmonster: Math
This site, from The Learning Network, helps students perform numerical calculations in subjects such as measurement, money, prime numbers and Roman numerals. Includes a section on multiplication.

Multimedia Math Glossary
Select a grade level, K-6, and then a topic to see a brief explanation of math terms and concepts. Appropriate for older students as well, from Harcourt School Publishers.

A Multiplication Table
An easy-to-read table showing multiplication of all numbers between one and 20, from SOS Math, authored by 3 recipients of math doctorates.

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Calculus

Ask Dr. Math: High School Level 
Questions about calculus and answers provided by math students, professors and mathematicians in industry.

Discovery School’s Webmath  
Reviewed by practicing classroom teachers, this site includes sections explaining derivatives, integration and other calculus topics.

The Mathematical Atlas
This site from a math professor at Illinois University provides information for the higher level calculus student.

Mathematics Lessons That Are Fun! Fun! Fun!  
Calculus lessons are provided by Rice University’s Center for Excellence in Education.

S.O.S. Mathematics: Calculus
Find explanations for a long list of topics from sequences and series to improper integrals and much more. From 3 recipients of doctoral degrees in Math.

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  Geometry

Ask Dr. Math: High School Archive  
Questions about geometry and answers provided by math students, professors and mathematicians in industry.

Discovery School’s Webmath 
Reviewed by practicing classroom teachers, this site includes graphs, plots and other geometrical stuff.

Geometry 
From two math educators in New York and New Jersey, find basic information about geometry terms, angles, figures, polygons, perimeter, coordinates and more.

Math League Help Topics  
Written by two math educators and one mathematician in industry, select Geometry for basic terms, angles, figures, coordinates and more.

The Mathematical Atlas  
This site from a math professor at Illinois University provides information for the higher level geometry student.

Mathematics Lessons That Are Fun! Fun! Fun!  
Fractal lessons for elementary through high school students from Rice University’s Center for Excellence in Education.

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 Mathematicians/History

Biographies of Women Mathematicians 
This site includes over 130 biographies indexed alphabetically and chronologically from Agnes Scott College in Atlanta. The biographies vary in length, some include a photograph, and most have links to more information.

The MacTutor History of Mathematics archive
From the University of St. Andrews in Scotland, select from menu on left. Includes 1300 biographies searchable by last name or by date, 30 articles on the history of mathematics, an index to 42 female mathematicians and more.

Mathematicians of the African Diaspora 
From the State University of New York at Buffalo, this site includes 400 male and female black mathematicians, mathematics in history and around the world, a timeline and more.

Mathematicians of the Seventeenth and Eighteenth Centuries
Adapted from a book on the history of mathematics, this site provides access to biographies of mathematicians and scientists, both chronologically and in alphabetical order. From Trinity College, Dublin.

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Measurement 

How Many?: A Dictionary of Units of Measurement
Information about Roman & Arabic numerals, the metric system, tables and scales (wind velocity, paper sizes, etc.) and much more from a professor at the University of North Carolina at Chapel Hill. Has a list of miscellaneous topics, such as “How much is a thimbleful?”.

Metric Units and Measurement 
This site, from two math educators, provides basic information on metric measurement for length, volume, mass and temperature and describes how decimals are used. 

Taking America’s Measure 
The National Institute of Standards and Technology provides clear, illustrated explanations on metric units in everyday life with special sections on sports and cooking. It also provides links to metric conversion tools.

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Trigonometry

Ask Dr. Math: High School Level  
Questions about trigonometry and answers provided by math students, professors and mathematicians in industry.

Discovery School’s Webmath 
Reviewed by practicing classroom teachers, this site explains algebraic manipulations involving trigonometric functions.

EMR: Exercises in Math Readiness 
This site offers instructions in trigonometry from the University of Saskatchewan.

S.O.S. Mathematics: Trigonometry
From trigonometry functions to hyperbolic trigonometry, read explanations by 3 recipients of doctoral degrees in Math.

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Last Updated: September 11, 2008