 Midwest GeoGebra Journal  Michael Todd Edwards and Steve Phelps, Editors
The official publication of the GeoGebra Institute of Ohio, Midwest GeoGebra Journal publishes articles about the use of GeoGebra in teaching and learning mathematics at all levels.
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 MiGen  London Knowledge Lab
This generalization software microworld presents the abstractions of algebra in a visual format. With MiGen's simple sequences of coloured tiles, young learners construct patterns (eGeneraliser), express their structure and relationships (eXpresser),
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 Mighty Number
This "search engine for numbers" returns facts about figures, such as its square root, base 10 logarithm, and primality. Mighty Number also writes out quantities in several different languages (English, German, French, Spanish, and Swedish) and represents
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 Mike Cook's Canonical List of Math Jokes
A collection of math jokes, quotes, and humor for those interested in
mathematics.
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 mikesmathpage  Mike Lawler
Blog by a former math professor "writing about math with my kids." Posts, many with videos of Lawler and his children at a whiteboard, date back to November, 2013: "Day in the life of a home school dad," "Family Math and paper folding," "Fun with James
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 Millefiori!  David Joyce; Dept. of Mathematics & Computer Science, Clark University
Fractal patterns produced by an algorithm with changeable parameters.
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 Millenium Mixup?  Lesson Ideas: Math; Teachnet.Com
1999, 2000, 2001... A new century; a new millennium. But have you thought about when exactly this "next millennium"? Here's the lowdown.
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 Millennium Education Company of America  Charles Herring, Jr.
A curriculum development company that specializes in the education of children in kindergarten through 8th grade, in which music, creative arts and interactive teaching guides are used to strengthen grammar and math skills, and heighten the awareness
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 Millennium Primes  Ivars Peterson (MathTrek)
The arrival of the year 1999 and the impending transition to 2000 has captured the attention of people who like to play with integers. Consider 1999. It's a prime number, meaning that it is evenly divisible only by itself and 1 (see
Prime Talent). As
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 Milliken Publishing
K12 instructional books and software for home or school use, in several subject areas including math. "Math Sequences" software demo for Windows is available on the web. Software may be purchased on the web, and book dealers are listed by town within
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 A Million/Billion Seconds  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about millions and billions of seconds, such as "What is a million seconds in weeks, days, hours, minutes, and seconds?" and "How can I work out the number of seconds since 1980, taking leap years into account?"
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 The Million $ Mission  Cynthia Lanius
You have your choice of two payment options on your new job: 1. One cent on the first day, two cents on the second day, and double your salary every day thereafter for the thirty days; or 2. Exactly $1,000,000. (That's one million dollars!) What's the
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 MiMa  Museum for Minerals and Mathematics Oberwolfach
This German museum's exhibits about mathematics, which focus on symmetry and crystallography, have included IMAGINARY; SURFER, a realtime ray tracer of algebraic surfaces; Cinderella & Curved Spaces; jReality; Morenaments; Doppelpendel; Penrose Puzzle;
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 Mind Over Math  Mind Over Math, Inc.
Local to Orangeville and Waterloo, Mind Over Math is a tutoring centre that offers help for students in the Ontario Curriculum. The company has specialized programs tailored to the different courses, and can make available workbooks for purchase. The
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 MindPlay
The threepart series FractionOids helps children understand, in a visual way, what happens when a denominator gets smaller or larger; discover for themselves what a common denominator is; understand why division of fractions makes numbers bigger; and
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 MIND Research Institute
Languageindependent, visually driven curricula, instructional software, textbooks, and professional development for the K12 math market. Sample MIND's JiJi penguin games or take tours of its programs, which include Integrated Instructional System™,
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 MindTool Resource Page  Gary Lewallen
Mindtools are those computerbased technologies and programs that foster and facilitate critical thinking. A collection of online and print resources for databases, spreadsheets, programming, expert systems, and more, each categorized according to grade
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 Minerals, Crystals and Their Systems  Charles LewtonBrain
An introductory listing of definitions and nomenclature concerning gem materials. Includes geometric and symmetrical properties of some gemstones, with diagrams, and major gemstones listed by crystal system.
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 Minesweeper Logic  Ivars Peterson (MathTrek)
In the basic version of this Windowsbased game, the player faces a gray landscape of 64 blank squares in an eightbyeight grid. The object is to locate 10 randomly placed "land mines" hidden among the playing field's squares, working as quickly as possible
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 Minimal Snow  Ivars Peterson (MathTrek)
For a truly cool experience, there's nothing like transforming a 12foot, 20ton block of manufactured snow into a giant sculpture. That's the premise underlying the Breckenridge snow sculpture championships in Colorado, held annually in January. This
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 Mining Prime Terrain  Ivars Peterson (MathLand)
Venturing again into largely unexplored digital territory, computer scientists at Cray Research have unearthed another gargantuan prime number, setting a new record for the largest known prime. This number, 2^1,257,787  1, has 378,632 digits, putting
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 Ministry of Education  British Columbia, Canada
Useful info for students, teachers, parents, and administrators, including Ministry programs and services, publications, and links to related sites.
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 MiniWebtool  Kevin Liu
Online math tools include an average calculator, base converter, basen calculator, binary calculator, binary converter, binary to decimal converter, binary to hex converter, binary to octal converter, bitwise calculator, compound interest calculator,
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 MinMax Temperatures (MSTE)  John Meseke; University of Illinois at UrbanaChampaign (UIUC)
Students use the predicted minimum and maximum temperatures for various cities throughout the U.S. to calculate averages.
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 Minnesota Council of Teachers of Mathematics (MCTM)
An affiliate of the National Council of Teachers of Mathematics (NCTM). The site provides information about conferences, events, and programs; membership; listings of recommended math sites; MCTM highlights (Presidential Awardees, Shape of Space video,
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 Minorities & Mathematics  Key Issues in Mathematics at the Math Forum
Find sites relevant to mathematics and minorities such as African Americans, Hispanics, and Native Americans in the Math Forum's Internet Mathematics Library.
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 The Mint  The Northwestern Mutual Life Insurance Company
Learn about starting your own business, saving and investing, government spending, making a budget, learning and earning (the financial rewards of finishing school), and your role in the economy. Lesson plans for parents and teachers include Financial
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 MinutePhysics  Henry Reich
"Cool physics and other sweet science" instructional videos, most shorter than four minutes long. Reich narrates while sketching stick figures and other simple line drawings on a whiteboard that sometimes also incorporates photos or video clips: "Proof
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 Mirror Curves  Slavik Jablan, Mathematical Institute, Belgrade
Making art by repeating a curve to make a more complicated design, by symmetry/reflection. This paper illustrates Tamil threshold designs, Lunda and Chokwe sand drawings, and the knots/curves of Leonardo da Vinci.
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 Mirror, Mirror (MatheMUSEments!)  Ivars Peterson (Math Muse for Kids)
If you stand between two mirrors that are parallel to each other, one in front of you and one behind, you see countless images of yourself. Light rays bounce back and forth between the mirrors to create that endlessly repeated pattern.
What happens when
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 Mirror Puzzles  Erich's Puzzle Palace; Erich Friedman
Each square in the grids shown contains either a person lost in the hall of mirrors, or a diagonal mirror. The numbers at the sides of the square indicate how many people can be seen from that location when looking either horizontally or vertically. The
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 Mirrors (Geometry and the Imagination)  Conway, Doyle, Gilman, Thurston; The Geometry Center
How do you hold two mirrors so as to get an integral number of images of yourself? Discuss the handedness of the images. Set up two mirrors so as to make perfect kaleidoscopic patterns. How can you use them to make a snowflake?...
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 Miscellaneous (Manipula Math)  International Education Software (IES)
More than 30 miscellaneous Java applets, covering linear transformations of lattices and lines; the area of a parallelogram; inner products; complex numbers; fractals; vectors; life game; line and dot product; hyperbola; parabola; shadow trace; rectangular
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 Miscellaneous Sketches: Conics, Pythagorean Theorem...  Key Curriculum Press
Sketches: describing the relationships of parabola, hyperbola, and ellipse from an eccentricity point of view; four ways to demonstrate (manipulate) Pythagorean theorem  shear & rotation, shear & translation, similarity, and tessellation; studying
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 Miscellaneous Sketches: Linear Sketch, MidRhombus...  Key Curriculum Press
Sketches: a dynamic display of the equation of a line as you move it around; an illustration of the midpoint figure of a quadrilateral; a tessellation made in the pattern of a Navajo rug; a sketch that draws the regular polygon with given internal angle;
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 Missing Dollar  Math Forum, a Classic Problem from the Ask Dr. Math FAQ
Three men go to stay at a motel, and the man at the desk charges them $30.00 for a room. They split the cost ten dollars each... where is the missing $1.00?
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 Mission Challenge  University of Maryland Ball Aerospace & Technologies Corp.
"After a voyage of 173 days and 431 million kilometers (268 million miles), NASA's Deep Impact spacecraft will get upclose and personal with comet Tempel 1 on July 4, 2005. The first of its kind, hyperspeed impact between spaceborne iceberg and copperfortified
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 Mission: Possible (SMILE)  Mary Terhune, Rachel Carson School
A lesson for grades 58, designed to teach students to convert scaled directions in inches to actual measurements in feet; correctly measure distances on an outdoor path; and enlarge a section of a map 5:1. From the Practical and Applied Math section
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 Miss Lindquist: The Tutor  Neil Heffernan
A free Web tutoring system for middle school and high school students concentrating on writing expressions for algebra word problems. Teachers can assign portions of this site for homework, students can get help as they do their homework, and progress
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 MistaMath  Roger Vanderlely
Tutorials, advice, worksheets, and narrated screencast videos for learning the basics, fractions, and algebra: adding integers, learning multiplication tables, factor trees, exponents, definition of exponents, adding exponents, subtracting exponents,
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 MISTER Pi Computer Math Competion  Otet Alexandru
A math competition for Romanian students, for one "Pi School" per city. Detailed instructions on the site.
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 Misunderstood Minds  PBS
The science behind learning difference, and strategies to aid success in school, are available on this companion Web site for the Misunderstood Minds PBS documentary. The site includes profiles of the students in the documentary, as well as sections on
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 MIT+K12  Massachusetts Institute of Technology
An open platform for K12 educators and Massachusetts Institute of Technology (MIT) to work together to make and crowdcurate videos about science, technology, and math. This collaboration of MIT and Khan Academy invites primary and secondary teachers
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 M.I.T. K12 Math Games Lesson Plans  Wendy Huang, MIT Teacher Ed Program Manager
A collection of math games lesson plans to make learning math fun and engaging for middle and high school students. Written by MIT teacher education students.
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 Mixture Problems  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about mixture problems, such as "How many liters of a 14 percent alcohol solution must be mixed with 20 liters of a 50 percent alcohol solution to get a 20 percent alcohol solution?"
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 M&M Software Online Catalog
Mailorder library of familyoriented, educational and game software, a resource for schoolteachers, home school associations and parents who want to use a computer as a creative teaching tool, or just for fun. Products for Apple IIs, the Macintosh, DOS
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 Mobilizing Minds: Teaching Math and Science in the Age of Sputnik  National Museum of American History, Smithsonian Institution
The 1957 launch of Sputnik, combined with a burgeoning school age population, catalyzed reform in mathematics and science teaching in the United States. This online exhibit presents objects from the time of Sputnik, including books and apparatus associated
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 Mobius  Paul Doherty
A Mobius strip is a band of paper that's deceptively simple in its appearance and exceptionally twisted in its properties. This activity is organized into an introduction, materials required, warming up, "what's going on?" and tools for further study,
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 Modeling MiddleSchool Mathematics (MMM)  Bolster Education
Video lessons (on tape and via the Web) that examine the content and structure of five mathematics curricula: Connected Math Project, Mathematics in Context. MathScape, MathThematics, and Pathways to Algebra and Geometry. Included on the website are:
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 Models of Polyhedra (The Geometry Junkyard)  David Eppstein, Theory Group, ICS, UC Irvine
One of the most common forms of geometric modelmaking involves construction of the five Platonic solids, and of various related symmetric threedimensional polyhedra. The most common construction methods involve folding and gluing together cutout paper
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