 Math Help  Graeme McRae
Tips and techniques for math students from sixth grade through high school, and oneonone help for math students in a variety of formats. Also includes math puzzles and jokes.
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 Mathie x Pensive  Gregory Taylor
Musings on mathematics, teaching, and more by an Ottawa (Canada) high school math teacher who majored in computer science and graduated from the mathematics program at the University of Waterloo before receiving his B. Ed from Queen's University. Posts,
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 Math in the Movies  Arnold G. Reinhold
A guide to those motion pictures which include scenes of real mathematics. Each movie is linked to further information and rated, and the mathematical scene(s) involved are described. See also Letters to Math in the Movies.
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 Math  Mashable, Inc.
Topical news stories on math by an "independent online news site dedicated to covering digital culture, social media and technology." See also Mashable's category for the word "mathematics."
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 Math Models  Bathsheba Grossman
Using rapid prototyping to create her pieces, Grossman describes them as "3D meditations": metal sculptures, etched crystals, and prints of Menger sponges, Lorenz attractors, 4dimensional solids projected into 3space, and triply periodic minimal surfaces
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 Math Moments  David M. Schwartz
Stories and photographs of ways that parents use math with their children at home and on family outings, as blogged by the author of If You Made A Million, G is for Googol: A Math Alphabet Book, Q is for Quark: A Science Alphabet Book, a set of nature
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 The Math Mom  Maria Lando
A blog presenting math as cool, fun, nonintimidating and hip. Entertaining math of cooking, parenting, dating, travel and home ownership.
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 Math Munch  Justin Lanier
A weekly digest of "the mathematical Internet" that has featured "lots of cool mathy things" online since October, 2011. Blog posts have included "Mazes, Spirals, and Paper Folding"; "Pennies, Knights, and Origami Mazes"; "Turing, Nets, and More Yoshimoto";
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 Math Mutation  Erik Seligman
These "show notes" accompany a short podcast of the same name that explores "fun, interesting, or just plain weird corners of mathematics that you probably didn't hear in school." Posts, which date back to December, 2011, have included "Flat People Give
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 Mathochism  AK Whitney
"One woman's attempt to revisit the math that plagued her." Whitney enrolled in the subject 25 years after high school, where she "barely passed algebra and actually flunked geometry and calculus." Writing with candor and selfdoubt ("This is the beginning
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 Math Prize for Girls  Advantage Testing Foundation
The Advantage Testing Foundation (ATF) sponsors an annual math competition for highschool girls, the largest monetary math prize for girls in the world. ATGF's goal is "to encourage young women with exceptional potential to become the mathematical and
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 MathShirts.com  Travis Taylor
Edgier math shirts and products for sale, including shirts such as calculus baseball jerseys, logos such as "DiffyQ's", slogans like "Mathematics is not a Crime", and more.
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 Maths is smART  Nicky Cleaver
Cleaver uses Matlab, Maple, and C++ to create dynamic images and videos which often exhibit some randomness, such as arbitrarily colored lines in pictures reminiscent of spirograph drawings. Posts, which date back to August, 2011, have included "Brownian
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 Maths Masters  Burkard Polster and Marty Ross
From the authors of a regular education column published in Melbourne's The Age newspaper and The Sydney Morning Herald: mathsnacks ("haikusize packages of beautiful mathematics, with accompanying illustration"); a list of movie clips featuring mathematics;
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 Maths Puzzles  Dhaval Shah
Brain teasers dating back to July, 2014, with answers available on click: "A method to divide the land," "Only 2% Student's Solved this in IAS exam," "Take 1000 and add 40 to it," "A man decides to buy a nice horse ...," "How much money did he get from
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 matthen  Matthew Henderson
"Things of interest in maths & science" created by a PhD candidate in Statistical Dialogue Systems who majored in mathematics as an undergraduate. Posts date back to March 2011, and routinely feature Henderson's original animated gifs: "Orbits around
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 The (Mock) Exchange  Sean Rasmussen
Most stock market simulators use real world stocks; as such, the virtual trader cannot affect the price of the shares. The (Mock) Exchange is a completely closed system, so a more realistic simulator; with each trade, you can potentially influence the
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 Moody's Mega Math Challenge  Society for Industrial and Applied Mathematics
A partnership of The Moody's Foundation and SIAM, the M3 Challenge spotlights applied mathematics as a powerful problemsolving tool, as a viable and exciting profession, and as a vital contributor to advances in an increasingly technical society. Open
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 MoSAIC
A traveling series of interdisciplinary miniconferences and festivals on mathematical connections in science, art, industry, and culture. Learn about overview and goals of MoSAIC, the nature of its events, how to bring one to a campus, and more. Administered
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 Mr. Vaudrey's Class  Matt Vaudrey
Blog by a secondary educator who "wears costumes, plays loud music, stands on desks, and shows pictures and video — all to make math meaningful for his students." The contents of mathematical posts, which date back to January, 2008, have included
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 The Music of the Primes  Marcus du Sautoy
An article on the Riemann Hypothesis, "the greatest unsolved problem of mathematics."
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 My Puzzle Note  WenShan Kao
The 18 ProTangram is an interesting and excellent puzzle game for the
purpose of education at school and of recreation at home. Players of
different ages can practice and enhance their concept of reflective or
rotational symmetry, and of the congruent
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 My Reckonings  Ron Doerfler
Doerfler's book Dead Reckonings: Calculating without Instruments "describes techniques of computation and approximation that can be used to rapidly and mentally calculate mathematical quantities." Other sections of the site discuss sundials; astrolabes
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 My Speed Cubing Page  Jessica Fridrich
"Intended for those of you who can already solve [Rubik's] cube in a few minutes and want to get really fast." Content includes "20 years of speed cubing (a short historical narrative)," "Finger shortcuts," "Move algorithms to your subconsciousness,"
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 Nathan Selikoff
Works, publications, blog, and more from a "fine artist playing at the intersection of interactivity, math, and code." Works have included "Beautiful Chaos" (interactive software art), "Intersect"
(a public art installation), "Four Dimensions" (a realtime
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 National Association of Math Circles  Mathematical Sciences Research Institute
In a Math Circle, students and mathematical professionals gather informally to work on interesting problems or topics in mathematics. The goal of this education enrichment is to get students excited about mathematics, giving them a setting (usually after
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 Nautilus  Nautilus Ventures LLC
An online and print monthly dedicated "to science and its endless connections to our lives." Each issue contains chapters — essays, investigative reports, blogs, fiction writing, games, videos, graphic stories, and other original content —
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 ncase  Nicky Case
Interactive projects that illuminate principles of game theory, logic, and other topics, such as the chaos of fireflies, the parable of the paragons (with Vi Hart), coming out simulator (a halftrue game about halftruths), and sight & light (how
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 Newton Papers  University of Cambridge
View and download Isaac Netwon's handwritten papers: his own annotated copy of Principia Mathematica; the socalled "Waste Book," a large notebook that he inherited from his stepfather, and which Newton filled with notes and calculations when forced to
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 NFL Stats & Research Articles  Roland Beech
Indepth statistical coverage and analysis of the National Football League (NFL). See player stats and ratings by position, and regular season team stats such as drive charts, play call by down, and red zone performance. "Classic" articles include correlation
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 Nikoli  Nikoli Co., Ltd.
From the Japanese magazine publishers that popularized sudoku puzzles: the nikoli.com site releases three or more problems every day  more than 100 new problems a month. Step through tutorials and solve Flash puzzles of Slitherlink, Nurikabe, Heyawake,
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 Not So Standard Deviations  Peng, Roger; and Parker, Hilary
Podcasts on the latest in data science and data analysis in academia and industry. Audio of conversations, which usually run 50 minutes and date back to October, 2015, have included "Gilmore Girls," "A Gajillion Time Series," "Google is the New Fisher,"
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 NUMB3RS  CBS Broadcasting Inc.
NUMB3RS depicts how the confluence of police work and mathematics helps solve criminal questions. Watch video clips of actors Rob Morrow and David Krumholtz on the set, as well as trailers of the television show and previews of upcoming episodes.
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 numbermaze  Mike Reilly & Jenks Norwalk
A Sudokulike maze puzzle that uses the number pattern from a clock face, one through twelve. Link these numbers in either direction – clockwise or counterclockwise – through the maze to solve the puzzle. Read complete rules, path strategy, hints, and
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 Numberphile  Brady Haran
Playful primer videos "about numbers and stuff," typically less than ten minutes long. Watch mathematicians talk about Benford's Law, favourite numbers (in response to a poll conducted by Alex Bellos), spaghetti numbers, Curta calculator, vampire numbers,
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 Numberplay  The New York Times
Mathematical, logical and scientific puzzles, with solution "recaps." The posts, by Gary Antonick and Pradeep Mutalik, have included "Surreal Hat Tricks," "The Puzzles of Pickover," "Prime Rib at Hogwarts," "Nim for (a) Change," "Phi  The Magic and the
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 Number Recreations  Shyam Sunder Gupta
Recreational aspects of number theory, prime numbers, and the like. Currently includes rare numbers, EPORNS (Equal Product Of Reversible Numbers), unique numbers, unlucky 13, fascinating squares, curious properties of 153, and amicable numbers (including
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 NumberSpiral.com  Robert Sacks
Instructions, observations, formulas, and a glossary about number spirals, formed by writing the nonnegative integers on a ribbon, rolling it up with zero at the center, and arranging the spiral so all the perfect squares line up in a row on the right
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 Numeric Tests Solver  The IQ Challenge
Enter an integer sequence, and this program attempts to determine the next number in the sequence. It
is based on artificial intelligence algorithms.
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 nUniform Tilings  Brian Galebach
Illustrates the edgetoedge tilings of regular polygons having n transitivity classes of vertices for 1<=n<=6. Prior to my doing so, no enumeration had ever been completed of the nuniform tilings for any n>3.
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 Odd Day  Ron Gordon
Mathematical observations, original musings, news coverage, and cartoons in celebration of January 3, 2005 (1/3/5), July 9, 2011 (7/9/11), and other times when three consecutive odd numbers make up the date. Gordon, retired from teaching high school in
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 Oliver Knill
Research, teaching, and media by this preceptor in Harvard's math department. Knill began in dynamical systems, tackling first ergodic and spectral theoretical questions, then probability theory and elementary number theory. This led to his "passion for
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 Oliver Sin
Theorems and likenesses of mathematicians painted, drawn, and sculpted on canvases, guitars, shoes, and other media by an EasternEuropean contemporary painter who mixes Neoexpressionism, Street Art, Dadaism, conceptual, and political art.
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 Olympics Resources
Educational activities inspired by the 2002 Winter Olympic and Paralympic Games in Utah.
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 Opera Mathematica  Elsevier BV
François Viète's collected works, digitized by Elsevier, show how mathematicians used their books in the past: by writing directly on them as they worked through their questions. Viète, an innovator in the standardization of algebra,
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 Optical Illusions (SandlotScience.com)  SandlotScience
Interactive explorations of optical effects, illusions, distortions, animations, artwork, stories, PDF projects, games, and more. Impossible objects include columns, an endless staircase and animated stairs, Java triangle models, an interlaced tribar,
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 Paperforms: Polyhedrons for the Masses  John T. Vonachen
Geometric paper sculptures offered for sale.
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 Pasta by Design  George L. Legendre
Photos of architect Legendre's 2011 book by the same title. Pasta by Design provides an illustrated taxonomy of over 90 forms of pasta, along with the mathematical formulae, descriptions of special attributes, and advice on specific cooking uses for each
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 Pentomino  K.S.O. Glorieux Ronse, Belgium
An introduction to polyominoes, with a sitewide focus on pentominoes. The site features puzzles and contests, as well as galleries of pentomino constructions and problems, such as how to form letters of the alphabet and silhouettes of zoo animals. Available
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 Pentomino puzzles  Mike Frost
Rotate pentominoes to tile an 8×8 grid. This JavaScriptpowered online puzzle lets you select from a variety of decorative patterns and graphic designs.
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