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Reference Materials: Arithmetic
This list contains what we feel are some of the the best sites for
arithmetic reference materials. For a more exhaustive list, or to find
materials that fit your specific needs, search or browse
Arithmetic/Early Math or
Reference Sources
in the Forum's Internet Mathematics Library.
 Animated Math Glossary  Math Advantage
 Harcourt Brace School Publishers

A K8 glossary of common mathematical terms, categorized by grade. Each entry has an example, most of which are animated. An "other" section at the
... more>>
 Constants, Units, and Uncertainty
 National Institute of Standards and Technology (NIST)

A reference with three sections: Fundamental Physical Constants (values of the constants and related information, and a searchable bibliography on the
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 DAU Math Refresher Tutorial
 George Mason University

An interactive tutorial that uses a subway map as a metaphor for moving through the lessons, giving a comprehensive view of basic mathematics,
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 A Dictionary of Units
 Cleave Books

A summary of units of measurement worldwide (current units and a few of historical interest); conversion factors to the SI (Systeme International);
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 Fractions, Decimals, Percentages
 Math Forum, Ask Dr. Math FAQ

What are simple, complex, and compound fractions? How do you convert decimals and percentages to
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 Fractions (S.O.S. Mathematics)
 Dept. of Mathematical Sciences, Univ. of Texas at El Paso

A math review for people who have forgotten what they once knew about fractions. Simple fractions (Identification; Factoring Integers; Reducing
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 Glossary
 Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny

A glossary of terms that also serves as an alphabetical index to Bogomolny's site. Each term is linked to an illustrated
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 Golden Ratio, Fibonacci Sequence
 Math Forum, Ask Dr. Math FAQ

About the Golden Ratio (or Golden Section or Golden Mean), the Golden Rectangle, and the Fibonacci
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 How Many? A Dictionary of Units of Measurement
 Russ Rowlett; University of North Carolina at Chapel Hill

A dictionary of both metric (SI) and English measurement units, with history, links to related sites, and a
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 Integers, Rational/Irrational Numbers
 Math Forum, Ask Dr. Math FAQ

What is an integer? Are fractions rational numbers? What about .9999...? How about decimals? pi? the Golden
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 K12 Teaching Materials (Mathematics Archives)
 University of Tennessee, Knoxville (UTK)

An extensive list of Internet sites with significant collections of materials that can be used in the teaching of mathematics at the K12 level.
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 Learning Multiplication Facts
 Math Forum, Ask Dr. Math FAQ

Tips for parents, teachers, and students for different ways of learning to
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 Learning to Factor
 Math Forum, Ask Dr. Math FAQ

Examples of factoring from the Dr. Math archives: trinomials; greatest common factor (GCF); least common multiple (LCM); least common denominator
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 Math Index
 George Mason University

A glossary of math terms with illustrated examples of problems and tips for understanding concepts, from addition of positive and negative numbers to
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 National Institute of Standards and Technology (NIST)
 U.S. Department of Commerce

Working with industry to develop and apply technology, measurement, and standards. Links to a site guide; Measurement and Standards Laboratories;
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 Negative Times a Negative
 Math Forum, Ask Dr. Math FAQ

Why does a negative times a negative equal a positive? Does this ever happen in the real
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 Number Bases
 Math Forum, Ask Dr. Math FAQ

What is base 10? Binary? Hexadecimal? How can you convert from one base to
... more>>
 OnLine Encyclopedia of Integer Sequences
 The OEIS Foundation Inc.

Before publishing that new sequence you have just found, you might want to check here to see if it's already been discovered. Directions for how to
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 Order of Operations
 Math Forum, Ask Dr. Math FAQ

What is the correct order of operations? Why use it? What is
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 Pi = 3.14159...
 Math Forum, Ask Dr. Math FAQ

What is Pi? Who first used Pi? How do you find it? How many digits is
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 The Prime Glossary
 Chris Caldwell; Dept. of Mathematics & Computer Science, Univ. of Tennessee at Martin

A guide to the terminology of prime numbers, and links to other pages with fuller definitions and information, written on two levels: for
... more>>
 Prime Numbers
 Math Forum, Ask Dr. Math FAQ

What is a prime number? What's the 'Sieve of Eratosthenes'? What is the largest known
... more>>
 For more, search or browse
Arithmetic/Early Math or
Reference Sources
in the Forum's Internet Mathematics Library.
