 Monty Hall Dilemma  Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
A full discussion (including simulation) of the famous "three doors" problem, also known as the Game Show problem.
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 The Monty Hall Problem  Math Forum, a Classic Problem from the Ask Dr. Math FAQ
Let's Make a Deal: If you're shown a goat behind the second of three doors, should you stay with your first choice or switch?
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 Moogie on the Net!  Joseph Emanuel, Emanuel Software
Commercial drill and diagnostic software where the numbers always change. Not meant to instruct students or to present them with new material, but rather, to help them learn the process of solving problems. Software aligned to national and numerous state
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 MooMooMath  Bryon Blankenbecler
Hundreds of instructional whiteboard video primers, examples, and practice problems with step by step solutions. Formerly a public school teacher and tutor, Blankenbecler now teaches online, through a virtual school.
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 More Complicated Than It Seems  Kate Nonesuch
In this review of the literature of approaches to adult numeracy instruction, Kate Nonesuch asks the question, "How can ABE math instructors apply research findings to their own teaching practice?" Through an extensive literature review and ongoing discussions
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 More Fibbery  Gregory K. Pincus
"Fibs./ Terse./ Defined./ As your tools,/ Twenty syllables;/ How you use them is up to you." The author explains this form of poetry and its two most important rules: the syllable count of 1/1/2/3/5/8  the first six digits from the Fibonacci sequence
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 More Meaningful Math  Monika Schwarze
An international project to motivate students ages 12 to 16 with problems that show the importance of mathematics in real life and related to other subjects, and to enrich their teachers' methodology. Browse the file archive of freely downloadable documents
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 More Papercutting Patterns (Geometry and the Imagination)  Conway, Doyle, Gilman, Thurston; The Geometry Center
Conical, cylindrical patterns, Moebius, and other symmetrical patterns to experiment with.
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 More than Just a Plane Game  Ivars Peterson (MathTrek)
When topologists started to explore the world of geometric forms in higher dimensions, they found that neither the intuition nor the vocabulary of ordinary geometry was sufficient to describe and classify the new forms they discovered. They introduced
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 Morphing Art (MatheMUSEments!)  Ivars Peterson (Math Muse for Kids)
When you're riding along on your bike or in a car, you sometimes see the word "ONLY" painted on the roadway just before an intersection. The white letters look normal from where you're sitting. But if you were standing beside the "ONLY" instead of riding
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 The Most Colorful Math of All (MegaMath)  Nancy Casey; Los Alamos National Laboratory
Coloring is a profound mathematical topic with multimilliondollar industrial applications. The problem presented here has been of interest to mathematicians for over a hundred years. With a few crayons or markers and some handdrawn maps, children can
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 Mostly Modular Origami  Valerie Vann
Modular Origami is a branch of the art of paperfolding. The earliest modular origami is probably Asian (Japanese, Chinese) in origin. Unlike regular origami, where a figure or sculpture such as a crane, frog or airplane is made from a single sheet of
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 MOTIVATE  Univ. of Cambridge, UK
MOTIVATE is a project incorporating a series of videoconferences, run by the Millennium Mathematics Project at Cambridge. The objectives of MOTIVATE are: to enrich the mathematical experience of school students, to broaden their mathematical horizons,
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 Mount Everest Math Puzzles  Paula Fleischer; Peachland Avenue Elementary School, Newhall, CA
Kids (or grownups) answer math questions and get passwords that allow them into 'camps' higher and higher on Mt. Everest until they reach the summit. At each camp they find photos of the mountain and climbers, and tackle progressively more complex math
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 Mozart's Musikalisches Würfelspiel: A Musical Dice Game for Composing a Minuet  John Chuang
During his life, Mozart wrote the measures and instructions for a musical
composition dice game that cuts and pastes prewritten measures of music together to create a minuet. Compose a minuet online in one of three ways: CGI generates all random numbers,
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 M Puzzle: a Math Line Puzzle  Math Forum
Construct nine triangles by drawing three straight lines through a capital M. Questions, hint, solution.
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 MQS Search  Mathematical Quotations Server, Furman University
Search the Mathematical Quotations Server by keyword.
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 Mr. Brandenburg's List of Recommended Books on Math and Science  Guy Brandenburg
A list of over 140 math and sciencerelated books, mostly recent, for geometry students to choose from, read, and do a report on. This new list is organized by topic: astronomy; bad science; biography: mathematicians + scientists; biology/life science/evolution;
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 Mr. Kelley's AP Calculus Home Page  Mike Kelley
A teachermade site that allows students to answer middle and high school math questions from people all over the world. Also an archive of past problems of the week, rated by difficulty.
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 Mr. Math Puzzler  Young Saint Louis.com
A regular feature from the monthly YoungSaintLouis.com. Postmark answers by the 15th of the month for recognition and the chance to win prizes such as gift certificates. Mr. Math Puzzler is Wayne Hesse, a math teacher at Green Park Lutheran School, who
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 Mrnussbaum.com  Greg Nussbaum
Mrnussbaum's Math Lab has games such as Tony Fraction's Pizza Shop; Smart Poll; Cash Out (for practice making change); and Tackle Math Ball, Math Speed, Buffalo Math, and Math Fries (all timed games for practice adding, subtracting, multiplying, and dividing).
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 Mr. Pitonyak's Pyramid Puzzle  John S. Pitonyak
A webquest in which students are divided into construction teams that research the cost of building a pyramid, explore actual pyramids through online exhibits, and submit calculations that they would use to build their pyramid. The site includes instructions,
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 Mrs. Glosser's Math Goodies  Gisele Glosser
Interactive math lessons that work online and offline in a Web browser, and provide immediate feedback to students, with in addition Worksheets (on circumference and area; exponents; expressions and equations; integers; Ocean Math; order of operations;
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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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 MSEB Classics  Mathematical Sciences Education Board, National Research Council
Reports issued between 1990 and 1995, from the MSEB: Mathematical Preparation of the Technical Work Force: Report of a Workshop; What Should I Look for in a Mathematics Classroom?; Achieving Quality in Undergraduate Mathematics (see also Looking for Gauss...or
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 MSPnet: The Math and Science Partnership Network  TERC
The Math and Science Partnership (MSP) Program is a major research and development effort to understand and improve the performance of K12 students in mathematics and science. MSPnet is their electronic community. Learn about individual partnership projects;
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 MSRI Journal  Ivars Peterson (MathTrek)
The new journalistinresidence program at the Mathematical Sciences Research Institute (MSRI) in Berkeley, California represents one effort to improve communication of mathematics. Peterson will spend the summer of 1999 there.
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 MSTE Java  University of Illinois at UrbanaChampaign (UIUC)
Javabased activities submitted to MSTE, the Office for Mathematics, Science & Technology Education at UIUC. Topics include: best fit; box perimeter; Buffon's needle; CAD viewer; cereal box problem; chisquared test analysis of random marbles; cliff
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 mtbos directory  Jedidiah Butler
Filter, search, map, or browse through profiles of teachers in the mathtwitterblogosphere. Pulldown menus include roles, geographic regions, and interests; slider bars narrow down the years when someone first started teaching, tweeting, or blogging.
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 Mucho Math  Jake Enfield
Flash program for students to learn math vocabulary and mental math tricks through best practice teaching methods (discovery learning, scaffolding, spiraling, and customized learning). Teachers can create an account and add one student for free to try
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 Muggins! Math  Old Fashioned Products, Inc.
Makers of the arithmetic board games Muggins, KnockOut, Jelly Beans, Fudge, and Opps, all available as single wooden board, reversible wooden board, wipeoff board, or overhead transparency. Manipulatives include Number Neighbors, PreAlgebra for Visual
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 The Mult Applet  Philip Lin
A Java applet for practicing multiplication tables. Tables from 2 to 9 are scrambled and displayed with blanks for the answers. Enter your answers; if you miss any, you get a chance to correct them. If you get them all right the first time, the applet
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 Multicultural Math Fair  Suzanne Alejandre, Frisbie Middle School
Twentynine percent of Frisbie's student population is Limited English Proficient; Arabic, Cambodian, Chinese, German, Indonesian, Korean, Philipino, Polish, Portuguese, Romanian, Samoan, Spanish, Taiwanese, Vietnamese, and Urdu are represented. In 199394
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 Multicultural Pavilion, University of Virginia  Paul Gorski
Sites for educators interested in multicultural issues. Resources for teachers, including reviews of children's music, multicultural activities, online archives, and links to multicultural websites; papers, book reviews, and published materials; statistical
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 Multilingual Glossary  Glencoe Online, McGrawHill Education
Glencoe/McGrawHill has launched an online multilingual glossary specializing in math terminology for common terms from grade 6 through Algebra 2. Choose a letter, then choose a language: Arabic, Bengal, Chinese, English, Haitian, Hmong, Korean, Russian,
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 Multimagic squares  carrés multimagiques  Christian Boyer
Multimagic squares are magic squares that remain magic after their numbers are raised to various powers. The largest multimagic square currently known is BoyerViricel's pentamagic square, to the 5th power.
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 Multimedia Applications on a ShoeString Budget  Dr. Donna Graham
A site designed to acquaint middle school teachers with economical multimedia tools and ideas for Webbased educational activities that they will be able to use or adapt in their classrooms. Mathematics Lesson Plans/Units include math maps, geometry,
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 Multimedia Catalogue  Biography Index  Institute and Museum of the History of Science of Florence, Italy
Biographical texts of personalities connected in some way to Galileo. Each text is accompanied by still or animated images or by filmed sequences. Included are Archimedes, Aristotle, Bernoulli, Brahe, Copernicus, the Galilei family, Kepler, Milton, Ptolemy,
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 Multiplying by Zero  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about multiplying by zero, such as why zero turns other numbers that clearly have a greater value to zero when multiplied?
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 Multiplying Fractions  Millard Lewis, John Moore; Univ. of Georgia
An elementary lesson plan with a worksheet and an interactive exploration of the concept of 3/5 using the Geometer's Sketchpad. From Chapter 6: Rationals: Multiplication, Division, and Applications. A student folder from the Dept. of Mathematics Education/J.
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 Murder and the Economist  Ivars Peterson (MathTrek)
The prominent role of economic principles is certainly evident in all the mysteries of Marshall Jevons. It doesn't take long for protagonist Henry Spearman to begin invoking economic theory in Murder at the Margin, which started the series off in 1978.
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 Murderous Maths  Kjartan Poskitt et al.
Contents, descriptions of characters, updates, and "extra bits" for the books Murderous Maths; The Essential Arithmetricks; Desperate Measures; Do You Feel Lucky?; Vicious Circles and other Savage Shapes; The Phantom X; The Fiendish Angletron; The GCSE
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 The Museum of Scientific Discovery (MSD)
An interactive science and technology center in Harrisburg, Pennsylvania. Online science exhibits, links to other Internet science resources, and Educator's Express, an annual publication designed to familiarize teachers and other group leaders with
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 Museums in the Classroom  Illinois State Museum and Brookfield Zoo
Students from 25 partner schools throughout Illinois are developing online curriculum projects that explore the diversity of Illinois and world ecosystems, integrating collections, data, images, video, audio, text, and exhibitions and using skills from
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 Museu Nacional de História Natural e Ciência  Universidade de Lisboa
"Apoiando a investigação e o ensino nas áreas da zoologia e antropologia, da botânica, da mineralogia e geologia, e das demais ciências naturais, e estimulando o estudo e a divulgação da história das
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 Music and Mathematics  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about music and mathematics, and pitches, tones, and musical scales, in particular
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 Music and Probability  Lorraine Fielding
A middle school's music project based on the Mozart Musical Dice Game, invented by Mozart around 1770, in which dice rolls generate twelvetone or diatonic minuets. Links to a web version of Mozart's game, using MIDI technology; and movie, audio files
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 Music by John Greschak  John Greschak
Platonic Dice: Dodecahedron, Platonic Dice: Hexahedron, Pentominoes, The Tower of Hanoi, and other music compositions based upon the mathematical properties of various objects. Listen with RealAudio or Midi.
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 Music through the Curriculum  Phil Tulga
Developers of math programs such as "Math and Music," which teaches students how to "hear" math (what does a fraction sound like? how about a shape?); and "Math, Science and Sound," an assembly and family night program that connects thunder, volcanoes,
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 Musings from Mrs. Galvan  Regan Galvan
Blog of "thoughts on teaching math and on promoting social, emotional wellness among my students and colleagues" by a selfdescribed fan of students creating digital portfolios in math. Posts, which date back to February, 2013, have included "Geometry
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