 Institute of Mathematical Statistics  Elyse Gustafson, Executive Director
The Institute of Mathematical Statistics (IMS) is an international professional and scholarly society devoted to the development, dissemination, and application of statistics and probability. IMS' main technical journals are the Annals of Statistics,
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 Intelligent Tutor Math Educational Software, Inc.
The programs in the Intelligent Tutor software series contain tutorials designed to help students learn and master Grades 712 math subjects. The programs are designed with school versions for use in schools, and home versions for individuals in selfstudy
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 Interactive Excel Spreadsheets  Scott A. Sinex, Prince George's Community College
"Excelets are interactive Excel spreadsheets or simulations of mathematical models. The user changes a variable and the spreadsheet changes in numerical, graphical, and/or even symbolic form (equations).... with no use of programming, no macros or Visual
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 The Interactive Mathematics Classroom  Rex Boggs
A digital library of thirdparty technology resources for teaching mathematics, from kindergarten to calculus. Register to comment on interactive whiteboard files, Powerpoints, TINspire documents, Excel spreadsheets, and other digital resources. RSS
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 Interactive Mathematics Miscellany and Puzzles  Alexander Bogomolny
"The peculiar beauty of Mathematics lies in deduction, in the dependency of one fact upon another. The less expected a dependency is, the simpler the facts on which the deduction is based  the more beautiful is the result." This awardwinning site offers
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 Internet Math Challenge  Dept. of Mathematics, University of Idaho
A weekly K12 math challenge from the math department at the University of Idaho, discontinued in 2004. Past puzzles and solutions are available.
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 Internet Projects for Elementary Statistics  Weiss; Addison Wesley Longman
Projects designed to help students understand statistics by analyzing real data and interacting with graphical demonstrations of statistical concepts. Each Web chapter provides a set of simulations, demonstrations, and other activities to supplement Elementary
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 An Introduction to Kolmogorov Complexity and Its Applications  Li, Vigányi
2nd edition textbook on the subject, which can be ordered through the Web. A postscript file of contents is also available. The incompressibility method and Kolmogorov complexity is a versatile mathematical tool, a sharper relative of classical information
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 Introduction to Probability  Grinstead, Snell; American Mathematical Society
A text for a first course in probability that emphasizes the use of computing to simulate experiments and make computations. Read it on the Web or download it. A set of programs (Mathematica, Maple, TrueBASIC versions can be downloaded) goes with the
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 IXL Learning
IXL provides free online practice, organized by grade levels K8 and aligned to state standards. Choose one math skill from among the hundreds offered, and submit your answer. Respond incorrectly, and click on the "explanation" button to learn more; get
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 James Franklin
Research activities, books, articles, opinions, and more from the author of What Science Knows and The Science of Conjecture: Evidence and Probability Before Pascal. Franklin researches and teaches about the philosophy of mathematics in the School of
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 James Propp
James Propp studies tilings, games, and other aspects of combinatorics, probability, and dynamical systems. Many of his articles are available for download in PostScript and gzipped PostScript formats. Code for C programs related to tilings and cellular
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 Java Applets for Statistics  Shangrong Deng, Kai Qian, and XuYan Chen
A collection of applets that do calculations and provide illustrations for topics in elementary statistics: the sample space model, calculator (mean and deviation), multiplication rule for counting, permutations and combinations, tossing a balanced coin
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 Java Applets  STATLETS: NWP Associates, Inc.
Links to applets for Distributions (Histograms; Normal Approximation to Binomial; Normal Density; The T Distribution; Area Under Normal Curves; Z Scores & the Normal Distribution), Probability & Stochastic Processes (Binomial Probabilities; Brownian
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 Java at Xanadu  Jim Carlson, University of Utah
Applets for calculus and probability/statistics. There are calculus applets for experimenting with graphs of cubic polynomials, the arc length of graph of a cubic polynomial, and the area under the graph of a cubic polynomial. Probability and statistics
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 Java Demos for Probability and Statistics  Chuck Stanton, Department of Mathematics, California State University, San Bernardino
Applets for hypergeometric distribution, Poisson distribution, normal distribution, proportions, confidence intervals for means, the central limit theorem, bivariate normal distribution, linear regression, and Buffon's needle. The introduction to probability
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 Jim Loy's Gambling Page  Jim Loy
This is a set of short articles about the risk of gambling, your probability of going bankrupt, and pyramid schemes.
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 Jim Loy's Mathematics Page  Jim Loy
This is an informal collection of articles on many different mathematics problems. Topics include Algebra, Geometry, Calendars, Number Theory, and reviews of mathematicsrelated books. See also Jim Loy's Puzzle Page and Jim Loy's Logic Page.
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 Jim Loy's Puzzle Page  Jim Loy
This is a group of number, geometry, and logic puzzles with solutions, including "The Missing Dollar," "The Monty Hall Trap," and comments on the Tower of Hanoi.
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 John Allen Paulos
John Allen Paulos is a mathematician and author of the books Mathematics and Humor, I Think, Therefore I Laugh, Innumeracy  Mathematical Illiteracy and Its
Consequences, Beyond Numeracy  Ruminations of a Numbers Man, A Mathematician Reads the Newspaper,and
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 Johnnie's Math Page  Johnnie Wilson
A directory of interactive math activities and tools for elementary and middle school children. The site is organized and presented so that children can easily find engaging and worthwhile math activities. The directory is organized by content: number,
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 Joseph Mazur
Books by the professor emeritus of mathematics at Marlboro College: Enlightening Symbols: A Short History of Mathematical Notation and its Hidden Powers; Euclid in the Rainforest: Discovering Universal Truth in Mathematics; The Motion Paradox: The 2,500Year
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 Journal Homepages  Kluwer Academic Publishers
A search page for finding journals published by Kluwer Academic Publishers. Each includes past, present, and future article listings, aims and scope, and submission and subscription information. Search the complete catalogue by keyword or view journals
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 Journal of Computational Analysis and Applications  George Anastassiou, Ed. Raymond A. Clapsadle
A peerreviewed journal that publishes research articles from all subareas of Computational Mathematical Analysis, including: Applied Analysis, Applied Functional Analysis, Approximation Theory, Asymptotic Analysis, Difference Equations, Differential
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 The Journal of InquiryBased Learning in Mathematics  W. Ted Mahavier, Managing Editor
Classroomtested, professionally refereed, and freely downloadable university course notes intended for course design or independent study. Since the online publication of its first issue, in March of 2007, the Journal of InquiryBased Learning in Mathematics
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 Junior High and High School: Lesson Plans (The Lesson Plans Page)  Kyle Yamnitz, Univ. of Missouri
A searchable archive of lesson plans for statistics, numeracy and problemsolving, estimation, probability, and more. Includes suggestions for games, manipulatives, and spreadsheets.
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 k12.ed.math  Math Forum
A moderated discussion forum for K12 mathematics issues such as curriculum, assessment, classroom practices, suggested assignments, help on particular problems, grading practices, requests for advice, history of mathematics, etc. Messages are reviewed
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 Kids Math Games Online  Rene Smith
Free interactive games on addition, counting, division, geometry, money, multiplication, number (including mean median mode), problem solving (bridge crossing, hourglass time, wolf and sheep), and subtraction. Logic games include a 3D puzzle cube, Mastermind,
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 Knotted Walks  Ivars Peterson (MathTrek)
Given that it normally takes some effort to create a knot, the spontaneous formation of knots in ropes and strings can appear rather puzzling. Having no obvious explanation of the effect, frustrated users can't help but acknowledge this knotting phenomenon
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 Lavarand  LavaLite
Lavarand is a system by which a pseudorandom number generator is seeded by the digital output of a photograph of six Lava Lite® lamps.
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 The Law of Small Errors  Keith Devlin (Devlin's Angle)
As the number of words in a manuscript tends to infinity, the probability of a
significant error making it into the final version approaches 1. As with any selfrespecting infinite sequence in an undergraduate calculus class, "approaching infinity" here
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 Learn.co.uk  Guardian Education Interactive Ltd.
Interactive resources for learners to support Great Britian's national curriculum. Selfguided lessons, with glossaries and selfassessments, for key stage 2, key stage 3, or key stage 4 cover numbers; shape, space, and measurement; handling data; algebra,
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 Learning Games and Activities for K12  Creative Teaching Associates
Over 200 nonelectronic learning games and activities for ages 4 through adult. Math products include flash cards, activity cards, board games, math chips, cards, books, cassettes for basic math facts drill, and many more. Products are also listed by
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 Learning Math  Annenberg Media
The Annenberg Foundation and the Corporation for Public Broadcasting (CPB) use media and telecommunications to advance excellent teaching in American schools. Video programs with coordinated Web and print materials are offered for the professional development
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 Lectures on Probability, Statistics and Econometrics  Marco Taboga
Lectures and exercises on probability theory, statistics, and econometrics. The section entitled "mathematical tools" provides overviews and examples of combinatorics (permutations, dispositions, combinations), sequences, limit of a sequence, the RiemannStieltjes
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 The Legacy of the Reverend Bayes  Keith Devlin (Devlin's Angle)
How do you use inconclusive evidence to assess the probability that a certain event will occur? One method that has become increasingly popular in recent years depends on a mathematical theorem proved by an 18th Century English Presbyterian minister by
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 Lesson Plan Search  Google
Free math lesson plans that make use of Google Earth, Google Calendar, Exploring Computational Thinking, and other products and projects of the search engine company: Telling time & Google Calendar; Human Dimensions Project; Median of Latitude Data;
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 Lessons, Tutorials, and Lecture Notes (Mathematics Archives)  University of Tennessee, Knoxville (UTK)
An extensive, alphabetical, annotated listing of sites providing course material for teachers and students of mathematics. Includes topics from almost every field of math, at every level: K12, college and beyond. Algebra; Analysis; Arithmetic; Calculus;
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 Let 'Em Roll™ Simulation  Matthew Carpenter
The goal of this activity is to demonstrate a real world situation where the probabilities of mutually exclusive and independent events occur. Each student is asked to calculate the experimental and theoretical probabilities of these events. Students
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 Let's Do Math!  Cynthia Lanius
Maria and Cassie love doing math. The first problem they solve together is counting all the squares on a checkerboard  not just the individual squares, but all the differentsized squares that could be counted. Other Do Math problems include probability
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 The Let's Make a Deal Applet  West, Street; Dept. of Statistics, Univ. of South Carolina
As a motivating example behind the discussion of probability, this applet allows students to investigate the Let's Make a Deal Paradox (also known as the Monty Hall Problem, or The Three Doors). This paradox is related to a popular television show in
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 Let's Play Math!  Denise Gaskins
"As a homeschool mom who loves math, I want to help other homeschoolers see the variety and richness of the subject.... I hope this blog will be a place where we can play around with ideas about learning, teaching, and understanding math. (For me, it
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 Library Video Company
Library Video Company offers a searchable, browseable catalog of video and CDROM products for mathematics instruction on the K12 level, from addition to variables. This resource for primary and high school math educators looking for curriculum enhancers
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 LiveMath  Theorist Interactive, LLC
WebShareable computer algebra and graphing software (formerly MathView/Expressionist / Theorist / MathPlus). LiveMath notebooks may be shared via the Web. They are similar to spreadsheets in that a change in one value will ripple throughout the calculations.
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 Lizard Game (MatheMUSEments!)  Ivars Peterson (Math Muse for Kids)
The rocky Coast Range of California is the setting for an unusual game played by a brightly colored sideblotched lizard. Each male of the species has one of three throat colors, and each color of lizard has a different mating behavior. The lizards play
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 l'île des mathématiques  Tom Pascal
"L'île des mathématiques propose des cours et des exercices de maths et de
physique.
Il est possible de télécharger les nombreuses fiches.
Aussi bien pour les élèves que pour les professeurs de collège et de lycée.
Des forums gratuits d'entraide sont
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 Logotron Educational Software
A U.K.based division of Addison Wesley Longman, Logotron publishes educational software for schools in numerous subjects, including mathematics, datahandling, multimedia, internet, earlylearning, and crosscurriculum. All are tied to key stages where
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 Losing to Win  Ivars Peterson (MathTrek)
Researchers have demonstrated that two games of chance, each guaranteed to give a player a predominance of losses in the long term, can add up to a winning outcome if the player alternates randomly between the two games. This striking new result in game
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 Lottery Mania  Keith Devlin (Devlin's Angle)
The math behind the odds of winning the Big Game, a lottery open to 7 states (Massachusetts, Maryland, Georgia, Illinois, Michigan, New Jersey, Virginia,), and how to understand it ("the psychology of lotteries has a logic all of its
own").
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 MAA Bookstore  Mathematical Association of America
A searchable list of books, with descriptions, in the following categories: Algebra; Analysis; Applied Mathematics; Calculus; Career Information; Computing and Computers; Elementary Models; Games, Puzzles, and Popular Exposition; Geometry and Topology;
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