The following list contains Mathematics related links from all over the world. It is very hard to categorize them in a consistent manner, and the list is not, by any means, complete. If you run into a link that you would like to see on these pages, send the URL to Jim Matovina at jim.matovina@csn.edu.

General Searchable Sites:
The following sites contain links to tons of mathematically related site on the WWW. The Archives Server is a little more useful to educators because, in some sections, it classifies its links according to the appropriate academic level. The S.O.S. site is a great place for students to review.  The Eisenhower National Clearinghouse is a great place for k-12 math and science materials.

• Mathematics Archives WWW Server, (http://archives.math.utk.edu/)
• SOS Mathematics, (http://www.sosmath.com/)
• The Eisenhower National Clearinghouse, (http://www.goenc.com/)
• The Math Forum Hope Page, (http://mathforum.org/)
• Frank Potter's Science Gems - Mathematics, (http://www.sciencegems.com/math.html)
• Knot a Braid of Links, (http://www.cms.math.ca/Kabol/knotlinks.html)
• NCTM's Illuminations, (http://illuminations.nctm.org/)
• University of Illinois, Mathematics, Science & Technology Education (MSTE) Online Resource Catalog, (http://mste.illinois.edu/resources/)
• Math Worksheets Land, (http://www.mathworksheetsland.com)

Specific Mathematical Topics:

Algebra Skills:

• Discovery School's Webmath, (http://www.webmath.com/)
  A variety of problem solvers are offered. Students can practice combining like terms, solving equations, factoring trinomials, and more. The solvers an explanation of how it's done and the answer.
• National Library of Virtual Manipulatives for Algebra, (http://matti.usu.edu/nlvm/nav/topic_t_2.html)
  From Utah State University, these virtual manipulatives are related to the NCTM Algebra standards. Algebra tiles, algebra balance scales, pattern blocks, function machine, tanagrams, and more! Waaaaaaay too much to list. This is a GREAT site!
• Function and Algebra Concepts, (http://www.shodor.org/interactivate/activities/)
  Several interactive activities from the Shodor Education Foundation, Inc.
• Inverse Function Generator, (http://www.ies.co.jp/math/java/calc/fbun/fbun.html)
  This java applet allows the user to generate 1/f(x) from f(x).
• Practice with Exponents, (http://www.ltcconline.net/greenl/java/BasicAlgebra/ExponentRules/ExponentRules.html)
  Written by Larry Green from Lake Tahoe Community College, this java applet allows the students to practice problems involving the properties of exponents.
• Gizmos, (http://www.explorelearning.com/)
  Shockwave™ Activities the create real-time correlations between equations and graphs that help students visualize and experiment with many of the major concepts from Elementary Algebra. Very interactive and very cool. This is a GREAT site!
• Conic Sections, (http://cs.jsu.edu/~leathrum/Mathlets/conics.html)
  Making the various conic sections from an equation.
  

Arithmetic:

• National Library for Virtual Manipulative for Number Sense and Operations, (http://matti.usu.edu/nlvm/nav/topic_t_1.html)
  Addition and multiplication blocks, several different fraction manipulatives, integer arithmetic, and much more. This is a GREAT site!
• Educational Java Programs, (http://arcytech.org/java/)
  This Web site contains Java™ applets whose purpose is to be used as tools to help and enhance the education of children. The applets include pattern blocks, fraction bars, cuisenaire rods, and a few more.
• Multliplacation.com, (http://www.multiplication.com/index.htm)
  Teaching strategies, games, activities, worksheets, and more.
• Quia Math, (http://www.quia.com/shared/math/)
  Math activities which include flashcards and concentration matching games.
• Rounding Game, (http://www.bbc.co.uk/education/mathsfile/shockwave/games/roundoff.html)
  Requires Shockwave installation, but it's worth it.
• Sieve of Eratosthenes, (http://www.vex.net/~trebla/numbertheory/eratosthenes.html)
  A java applet to let you play with the sieve of Eratosthenes. It may take a few seconds to start up or reset.
• Scientific Notation Problem Generator, (http://www.nyu.edu/pages/mathmol/textbook/scinot6.htm)
  Allows the user to practice converting to and from scientific notation.
• The Fraction Idea Bank, (http://www.mathcats.com/grownupcats/ideabankfractions.html)
  Found within the mathcats.com site, here are a number of creative ways to teach fractions to elementary school students (as well as adults).
• Fraction Card Games, (http://sites.csn.edu/jmatovina/fraction_games.htm)
  This idea came from the Fraction Idea Bank (above), but I expanded it a bit.
• Visual Fractions, (http://www.visualfractions.com/)
  A great site by Richard E. Rand intended "to picture fractions and the operations on them."
• Number and Operation Concept Activities, (http://www.shodor.org/interactivate/activities/)
  Several interactive activities from the Shodor Education Foundation, Inc.
• Online Percent Calculators, (http://www.math.com/students/calculators/source/3percent.htm)
  Just enter the values for the required question and click the corresponding Calculate button.

Calculus:

• Finite Math and Applied Calculus Resources, (http://www.hofstra.edu/~matscw/RealWorld/index.html)
  Contains interactive tutorials, a game theory simulator, On-line Calculus topics, a Java graphing utility, and an HTML Equation Generator.
• Mathlets: Java Applets for Math Explorations, (http://cs.jsu.edu/mcis/faculty/leathrum/Mathlets/)
  Written by Tom Leathrum, these interactive applets cover many topics from pre-calculus through calculus.
• Visual Calculus, (http://archives.math.utk.edu/visual.calculus/index.html)
  A collection of modules that can be used in the studying and/or teaching of calculus.
• Linear Algebra Toolkit, (http://www.math.odu.edu/~bogacki/cgi-bin/lat.cgi)
• Calculus on the Web, (http://www.math.temple.edu/~cow/)
  COW is an internet utility for learning and practicing calculus. It was designed at Temple by two members of the Temple University Mathematics Department, Gerardo Mendoza and Dan Reich. The principal purpose of COW is to provide you, the student or interested user, with the opportunity to learn and practice problems in calculus (and in the future other topics in mathematics) in a friendly environment via the internet.
  

Consumer Math:

• Glossary of Financial Terms, (http://library.thinkquest.org/3096/9gloss.htm)
• The Mortgage Calculator Page, (http://www.interest.com/content/calculators/index.asp)
  Quickly generate amortization tables corresponding to the data entered (P, I, & T).
• FinAid! (http://www.finaid.org/)
  The SmartStudent Guide to Financial Aid.
• Budget and Savings Calculators, (http://www.infoplease.com/finance/tools/cb_budget.html)
• Budget Analysis Calculator, (http://www.acctsite.com/calcs/HomeBudget.html)
  Complete with a circle graph breakdown. Pretty neat.
• Cars.com, (http://www.cars.com)
  A wealth of information about new and used cars – including prices, specs, car reviews and financing tools.
• Reading Your Credit Card Statement, (http://www.practicalmoneyskills.com/english/resources/tutor/statements/credit_state.php)
• Inflation Calculator, (http://www.westegg.com/inflation/)
  Adjusts any given amount of money for inflation, according to the Consumer Price Index, from 1800 to 2001.
• Finance and Loan Calculators, (http://www.calculatorplus.com/)
  Comprehensive source of free online calculators: Mortgage loan calculator, Credit card, Insurance, Interest rate, Savings, Retirement, Auto finance
• First Time Home Buyers Guide, (http://www.mortgagecalculator.net/buyers-guide/)
  

Geometry:

• The Geometry Center, (http://www.geom.umn.edu/)
  The Geometry Center is a mathematics research and education center at the University of Minnesota. It is funded by the National Science Foundation as part of the Science and Technology Center program. The Center has a unified mathematics computing environment supporting math and computer science research, mathematical visualization, software development, application development, video animation production, and K-16 math education.
• Flatland: A romance of many dimensions, (http://www.geom.uiuc.edu/~banchoff/Flatland/)
  
• Surfaces Beyond the Third Dimension, (http://www.math.brown.edu/~banchoff/art/PAC-9603/welcome.html)
• The World of Escher, (http://www.worldofescher.com/)
• Discovering the Value of pi, (http://www.arcytech.org/java/pi/index.html)
• Euclid's Elements, (http://aleph0.clarku.edu/~djoyce/java/elements/elements.html)
  Java applets showing each of the Elements.
• Origami and Math, (http://www.paperfolding.com/math/)
  Origami is a great way to study reflections, rotations, and symmetry.
• Cheap Flights, (http://www.cheapflights.com/travel/science-of-flight-paper-airplanes/)
  Because paper airplanes are cool. (Special thanks to Leila Hendersky and her students!) Don't forget to unfold them and look at the symmetry.

Graphing and Functions:

• Maze Game, (http://www.shodor.org/interactivate/activities/coords/index.html)
  A fun way to get used to the coordinate plane.
• Random Function Machine, (http://www.shodor.org/interactivate/activities/fm/index.html)
  Provides an enjoyable way to develop the concept of a function.
• Random Linear Function Machine, (http://www.shodor.org/interactivate/activities/lfm/index.html)
  Provides an enjoyable way to develop the concept of a linear function and inspect its graph.

Graphics Calculators:

• Windows Graphing Calculator (http://www.graphcalc.com/index.shtml)
  Don't have a graphing calculator? Try this one. It's great and free!
• TI-83/84 Graphing Calculator Help, (http://www.prenhall.com/divisions/esm/app/graphing/ti83/)
  This tutorial is designed with the student in mind. The topics selected are those that students will use in college algebra, college trigonometry, and freshman calculus.

History of Mathematics:

• History of Mathematics, (http://www-groups.dcs.st-andrews.ac.uk/~history/)
  This very informative, organized, and searchable site contains everything you ever wanted to know about the History of Mathematics. Included in this site are over 1100 biographies on Mathematicians, Chronologies, a 6-8 page brief overview of the History of Math, and more.

Logic:

• Logic for Liberal Arts and Business Majors, (http://people.hofstra.edu/faculty/Stefan_Waner/RealWorld/logic/logicintro.html)
  A complete text resource on the WWW including examples and exercises.
• Logic Calculator, (http://www.ee.umd.edu/~yavuz/logiccalc.html)
  This JavaScript calculator computes the truth value of a logic expression of up to four variables.
• Truth Table Constructor, (http://sciris.shu.edu/~borowski/Truth/)
  A a powerful tool that draws truth tables for statements in propositional logic.

Numbers:

• Fibonacci Numbers and Nature, (http://www.mcs.surrey.ac.uk/Personal/R.Knott/Fibonacci/fibnat.html)
• Roman Numeral Converter, (http://www.ivtech.com/roman/)
  Enter any Hindu-Arabic numeral less than 4000 and have it converted, within seconds, to it's Roman equivalent.  It does convert the other way, but it does not account for syntax errors (that is, it will say both VC and XCV are 95).
• Egyptian, Roman, and Babylonian Numeration Systems, (http://sites.csn.edu/jmatovina/ancient_systems.htm)
  This is a page I wrote for my Math for Elementary School Teachers courses. It includes gif images of the Egyptian and Babylonian numerals - some of which I made and some of which I "borrowed" from other sites - as well as a description about how the symbols were used.
• Just how big are the decimal parts of irrational numbers?, (http://antwrp.gsfc.nasa.gov/htmltest/rjn_dig.html)
  This site puts it all in prospective.
• Large Prime Number Research, (http://www.utm.edu/research/primes/largest.html)
• Powers of Ten, (http://micro.magnet.fsu.edu/primer/java/scienceopticsu/powersof10/index.html)
  A simple little site that make you realize what an "order of magnitude" can become.

Probability:

• Free Online Casino Games, (http://www.freearcade.com/casinogames.html)
  Better examples of Probability and Expected Value problems may exist, but, hey, who could resist a free casino. As expected, you win a lot more when you play with points than you would if you played the same games with real money. Go figure.
• Area Probability (Throw Darts), (http://www.explorelearning.com/index.cfm?method=cResource.dspDetail&ResourceID=59)
  A nice site to compare experimental and theoretical probability. You need Macromedia's free Shockwave Player to make it work, but the site will automatically take you through the steps and download. It's well worth it.
• The Birthday Problem, (http://en.wikipedia.org/wiki/Birthday_problem)
  Thanks to Wikipedia.
• Odds for Dummies, (http://www.cardschat.com/odds-for-dummies.php)
  A concise and practical page covering the basics of poker.
• 5-Card Poker Hands, (http://www.math.sfu.ca/~alspach/comp18/)
  This page by Brian Alspach displays the computations to determine the number and probabilities of specific 5-card poker hands.
• Irony Games' Dice Server, (http://www.irony.com/igroll.html)
  Don't have dice? Use these.
• Ball Drop, (http://javaboutique.internet.com/BallDrop/)
  This applet at the Java Boutique is a nice place to see how occurrences of a random event gradually form a normal distribution.

Problem Solving:

• Problem Solving for the 21st Century, (http://www.hawaii.edu/suremath/home.html)
  This site is directed to students, teachers, administrators, parents, and other professionals. In accordance with NCTM objectives, it stresses how to reliably solve problems in Algebra, Physics, and Chemistry, all in a "Logical Thinking" tone.
• How Stuff Works, (http://www.howstuffworks.com/)
  Yes, it stretches the problem solving category, but its worth it. This site will suck you in.
• Math Anxiety, (http://www.mathpower.com/anxtest.htm)
  Do you have Math Anxiety? Take this quiz. Also, there is a link to how to reduce it. Some very good points are made, but the music is a little startling.

Sets and Venn Diagrams:

• Interactive Venn Diagrams, (http://www.shodor.org/interactivate/activities/VennDiagrams/)
• Interactive Venn Diagrams, (http://nlvm.usu.edu/en/nav/frames_asid_153_g_2_t_1.html?open=instructions&from=topic_t_1.html

Statistics:

• The Histogram Explorer, (http://bertie.usfca.edu/histogram_explorer/he.html)
  This is a great place to play with various histograms and distributions.
• The National Center for Education Statistics, (http://nces.ed.gov/nceskids/index.html)
  A government site where you can create and download graphs, find out which famous mathematician interests you the most, play games, and more. Not just for kids!
• Misleading Statistical Facts, (http://www.cut-the-knot.com/do_you_know/misuse.html)
• The US Census Bureau, (http://www.census.gov/)
  A statistician's dream and a really scary site.
• USA Today Snapshots, (http://www.usatoday.com/snapshot/news/snapndex.htm)
• The World's Busiest Airports, (http://www.answers.com/topic/world-s-busiest-airport)
• 50States.com, (http://www.50states.com/)
  Admittedly, its not directly a "statistics" site, but there are some statistics there. Its just a really neat site.
• All-Time Major League Baseball Statistics, (http://sports.espn.go.com/mlb/alltime/leaders?type=0)
  Baseball bills itself as a game of statistics. This site proves it.
• Barcodes Inc - An Explanation of 3D Barcodes & Other Statistics Resources, (http://www.barcodesinc.com/articles/study-of-statistics.htm)
  Very fascinating.

Trigonometry:

• The Math Page - Topics in Trigonometry, (http://www.themathpage.com/aTrig/trigonometry.htm)
  An entire online trigonometry textbook written by Lawrence Spector from the Borough of Manhattan Community College in New York.

Organizations:

• AMATYC, (http://www.amatyc.org/)
  The American Mathematical Association of Two-Year Colleges
• NevMATYC, (http://www.csn.edu/pages/1721.asp)
  The Nevada Mathematical Association of Two-Year Colleges
• Shortcuts to Physics, Engineering, and Math Departments, (http://www3.waubonsee.edu/~flemmerhirt/PEMDepts.htm)
  Compiler by Fred Lemmerhirt of Waubonsee Community College in Sugar Grove, IL, this page offers direct links to Physics, Engineering, and Mathematics department pages at hundreds of colleges and universities in all parts of the United States.
• NCTM, (http://www.nctm.org/)
  The National Council of Teachers of Mathematics

Just for Fun:

• The Quote Garden, (http://www.quotegarden.com/math.html)
  Contains math quotes.
• Indiana House Bill No. 246, (http://sites.csn.edu/jmatovina/indiana_pi.htm/)
  The State of Indiana actually tried to pass a bill defining the value of pi as a Rational Number. The bill was so poorly written, it listed four different values: (decimal approximations) 4, 3.33, 3.23 and, most blatantly, 3.2. A concise reference, including the full text of the bill, can be found at listed site.
• The Maths File Game Show, (http://www.bbc.co.uk/education/mathsfile/)
  From the BBC Online, several simple and entertaining math games, complete with "your ancient mathematical hosts: Hyapatia and Pythagoras."
• Rubik's Cube, (http://www.mathpower.com/rubik.htm)

The Metric System:

• Metric to US-Imperial Measurement Converter, (http://www.french-property.com/cgi-bin/ifp/convert.pl)
• The Decimal Nature of the Metric System, (http://lamar.colostate.edu/~hillger/decimal.htm)
• NASA's Mars Climate Orbiter Mission, (http://marsprogram.jpl.nasa.gov/msp98/orbiter/)

Writing Math in HTML:

• Math Symbols in HTML, (http://barzilai.org/math_sym.htm)
• HTML Cheatsheet, (http://www.webmonkey.com/2010/02/html_cheatsheet/)

This page was last updated on May 16, 2013.