 Meaningful Learning Research Group  Dr. Joseph Novak
The group works with a number of common beliefs, primary among them the idea that the best way to teach is to determine what the student already knows, and then to teach from there. They believe that teaching and learning grounded in a coherent theory
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 Mean, Median, Mode, etc. (SMILE)  Charlotte Goldwater, Kenwood Academy
A lesson for grades 412 designed to teach students to generate their own data and then analyze their information, teaching such concepts as mean, mode, and median; histogram; bar graph; probability; and circle graph. From the Probability and Statistics
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 The Means  Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
Two similar and oftenconfused problems, the difference between them not immediately obvious, showing that depending on the circumstances, to determine the average speed of motion, computations based on the same basic formula (S = D/T) may have to follow
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 Measurement Conversions  ConvertValues.com Measurement Conversions
A simple tool for converting different measurement units: length, area, volume, weight, mass, time, temperature, speed, force, power, and more.
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 Measurement Converter  Entisoft Units; ConvertIt.com, Inc.
Many online calculators require a Javacapable browser. Here's one that doesn't, and will perform over 500 different unit conversions for distance, area, volume, mass, speed, temperature, pressure, energy, power, force, etc. And when you convert, say,
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 Measurement Databases for Industry & Science  G. Raymond Peacock
An open, searchable directory of measurement data resources and databases
from industry & science including properties of matter, specialty
calculators, units and conversions, glossaries and data collections plus
free software.
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 Measurement of Objects Using Similar Triangles in The Plane (SMILE)  John Gabrielson, Chicago H. S. for Agri. Science
A high school geometry lesson designed to apply the use of similar triangles to a sight tool in order to measure the distance between or height of large objects such as buildings or trees. From the Geometry and Measurement section of a collection of almost
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 Measurement of Volume (SMILE)  Richard Murray, Gage Park High School
A lesson designed to teach students to measure the volume of a clear container; use a stop watch; and estimate the volume of a container using proportions. From the Geometry and Measurement section of a collection of almost 200 single concept lessons
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 Measurements Converter  Sergey Gershtein
JavaScript conversions in the following categories: weight, capacity and volume, length, area, speed, pressure, temperature, circular measure, and time. [Do not use this converter if you need precision calculations.] You will need a Javacapable browser
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 Measurement Units Translation  Sergey Gershtein, UralRelcom, Ltd.
Javascript converters for weight, capacity and volume, length, area, speed, pressure, temperature, circular measure, and time.
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 Measurement  What Is It? (SMILE)  Claudy E. Chapman, Hartigan School
A lesson designed to teach students practical reasons for measurement; the use of various tools for measurement; how and why those tools might be chosen and/or designed; and the need for uniformity and agreement on definitions of measurement. From the
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 Measurement Wizard  The Association of Religion Data Archives
Survey data measuring key concepts in the study of religion, each detailed with
scope, frame (i.e., audience), sample (e.g., random, etc.), and mode (phone, etc.). Browse or search for practices, beliefs, and opinions about congregational characteristics
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 The Measurers: a Flemish Image of Mathematics in the Sixteenth Century  Museum of the History of Science, Oxford
From a 1995 exhibition centered around an unusual and important painting in the Museum's collection, known simply as 'The Measurers' (Antwerp, late 16th century). The painting depicts a range of practical activities, foremost among them mathematical instrument
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 Measuring America  Andro Linklater
Measuring America is the story of why America has ended up with its unique system of weights and measures — the American Customary System, unlike any other in the world — and how this has profoundly shaped our country and culture. In the process, the
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 Measuring an Angle  NASA Lewis Learning Technologies Project
What is the measure of the angle shown? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test.
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 Measuring Centimeters  NASA Lewis Learning Technologies Project
If a pencil were 7.5 centimeters long, where would its point end on this centimeter ruler? A diagram and a detailed answer are provided. From NASA's 9th Grade Math Proficiency Test.
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 Measuring Temperature, Adding Degrees  NASA Lewis Learning Technologies Project
From the thermometer reading below, about how many more degrees must the temperature rise to reach 50 degrees? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test.
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 Measuring Up, Prototypes for Mathematics Assessment  National Academy of Sciences
An electronic version of Measuring Up, a book on assessing students in accordance with the NCTM math standards by the National Research Council that provides examples of problems students should be able to solve at a fourth grade level and insights on
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 Measuring What Counts: Executive Summary  MSEB, National Research Council
"'You can't fatten a hog by weighing it,' said a farmer to a governor at a public hearing in order to explain in plain language the dilemma of educational assessment. To be useful to society, assessment must advance education, not merely record its status...."
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 Mechanical calculators  Gerold Beckers
Mechanical calculators in the author's private collection and the museum of the faculty of Geodesy, TU Delft, the Netherlands. The calculators are catalogued according to the working principle. Contents include: Napier's rods or bones, abacus and slide
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 Mechanical Linkages  Jackiw, Koedinger; Key Curriculum Press
Four sketches illustrating various mechanical linkages: a windshield wiper, a sewing machine, elevator doors, and Peaucellier's Linkage.
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 Meddling in the Affairs of Infinity  Shohdy Nagib
How to use feedback between your video camera and your television set to produce "hypnotizing video effects" related to fractals. Site also available in Russian.
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 Media4Math
Free algebra and geometry videos, PowerPoint presentations, Promethean Flipcharts, critical thinking activities, workedout examples, and other media resources. An initiative of Emmy awardwinner Edward de Leon, executive producer of "Greatest Inventions
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 The Median Isn't the Message  Stephen Jay Gould
A personal story of statistics and "stretching the truth with numbers"; according to Steve Dunn, "the wisest, most humane thing ever written about cancer and statistics. It is the antidote both to those who say that, 'the statistics
don't matter,' and
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 The Medians  Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
Interactive proofs (elementary geometry, barycentric coordinates, complex numbers, Ceva's theorem, affine geometry) of the fact that the three medians of a triangle meet at a point called the centroid. See also The medians, contributed by Scott Brodie.
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 Medicine and Mathematics  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about medicine and mathematics, such as "How do doctors use math?"
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 Medieval Harmony  Ivars Peterson (MathTrek)
Harmonic numbers. The history of mathematics contains many gems of mathematical reasoning and thought. At a Mathematical Sciences Research Institute meeting last October, number theorist Hendrik W. Lenstra Jr. of the University of California at Berkeley
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 MEECAS  Mathematics Educators Exploring Computer Algebra Systems, Inc.
Mathematics Educators Exploring Computer Algebra Systems (MEECAS) seeks to encourage active interest in the use of computer algebra systems (CAS) and related technology in schools; to improve learning of mathematics; to influence curriculum, assessment,
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 Meetings (NCTM)  National Council of Teachers of Mathematics
Affiliated Group Leadership Conferences; Local Meetings by Region: Canada, Western, Central, Southern, and Eastern; Other Conferences. This site contains links to descriptions of the sessions to be presented at the meetings, as well as registration information.
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 MegaCalculator  Don Benish, Benish Industries
From the MegaConverter site. A webbased scientific calculator with which you can add, subtract, multiply, divide, take square roots, do powers, logarithms, sin, cosine, tangent, statistical functions and more.
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 megaConverter.com  BenCam InterMedia
megaConverter.com is an evergrowing set of weights, measures and unit conversion/calculation modules. Spin a dial to select the kind of unit to convert: ancient lengths, volume, weight; angles; area; astronomical distance; bases  dec/hex/oct/bin; density;
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 MegaPenny Project  Kokogiak Media
What would a billion (or a trillion) pennies look like? Find out here, in pages listing data on one to one quintillion pennies. All the pages have tables at the bottom, listing things such as the value of the pennies, size of the pile, weight, and area
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 Mega TicTacToe  Paul Nahay
A Java applet that plays TicTacToe, Connect Four, Gomoku, and hundreds of customizable original variants.
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 Meikleriggs' Mathematics  Peter Mitchell
An archive of the Newcastle Royal Grammar School's Mathematics' Department, which has scanned in handwritten STEP Mathematics' papers as well as GCSE and Alevel Structured Mathematics on the MEI model. Register to see, in particular, the Examinations'
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 Members & Activities (AMS)  American Mathematical Society
Includes information and resources on Membership in the AMS (becoming a member, individual, institutional, associate, and corporate membership, FAQ); Membership Benefits (Membership List, eMail Forwarding, Meetings and Conferences, Notices, Bulletin);
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 Memory, Mental Arithmetic, and Mathematics  MacTutor Math History Archives
All the mathematicians whose biographies are given in the MacTutor archive exhibited extraordinary mental powers. This article examines a few mathematicians who showed extraordinary powers of memory and calculating, together with a number of people who
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 MendelWeb  Roger B. Blumberg
An educational resource for teachers and students interested in the origins of classical genetics, introductory data analysis, elementary plant science, and the history and literature of science. Constructed around Gregor Mendel's 1865 paper "Versuche
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 The Menelaus Theorem  Cut the Knot!, Alexander Bogomolny
Ceva's and Menelaus' theorems compared and two proofs of the latter. An interactive column for MAA Online that uses a Java applet to simulate a puzzle or mathematical problem, one not stated directly since the applet is intended to be such that the right
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 Mentalmath  EUDACTICA
Makers of superTmatik mental math cards, and organizers of the International Mental Math Championship, which has developed number and calculation skills in children ages 615 since 2006.
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 Mental Model Musings  Gene R. Bellinger, OutSights
Modeling and Simulation is a discipline for developing a level of understanding of the interaction of the parts of a system, and of the system as a whole. It embodies a set of disciplines that provide a foundation for understanding not only how things
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 MenuMath  JeanPierre Gosselin, Collège NotreDame de la Paix
Un outil d'aide à l'enseignement et à l'étude des maths du secondaire. Ce logiciel gratuit (Windows 95/98) regroupe 78 programmes d'arithmétique, d'algèbre, de géométrie, de trigonométrie, d'analytique,
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 Meredith Mathematics & Science Institutes  Meredith College
Residential professional development opportunities that focus on the "big ideas" of mathematics content for preK through high school. Learn about institute highlights, read testimonials, register, and more. MMSI and the creators of the game 24®,
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 Merlin's Magic Squares  Cut the Knot!, Alexander Bogomolny
The toy game of Merlin is not quite trivial and the mathematics is simple enough to provide an entertaining exercise in a Linear Algebra class. The original game is played on a 3x3 array of buttons that toggle between two states. The goal of the game
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 Mersenne Megaprime  Ivars Peterson (MathTrek)
On June 1, 1999, a participant in the Great Internet Mersenne Prime Search (GIMPS) discovered the the 38th known Mersenne prime  the first known prime number with at least 2 million decimal digits, more than twice as many as the previous record holder.
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 Mersenne.org  George Woltman
A domain created as a home for the Great Internet Mersenne Prime Search (GIMPS).
Mersenne primes are named after the French monk Marin Mersenne. The goal of the search is to find ever larger Mersenne primes. You can join this search by downloading the
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 Mersenne Prime Digits and Names  Landon Curt Noll
Tables of known Mersenne prime numbers: discovery dates, digit counts, decimal digits (American and European styles), English names, and English names with numbers.
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 Mersenne Prime Freeware  Conrad Curry
An extensive list of software, with descriptions, for various operating systems, as well as libraries and developeroriented links.
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 Mersenne Primes: History, Theorems and Lists  Chris Caldwell; Dept. of Mathematics & Computer Science, Univ. of Tennessee at Martin
When 2n1 is prime it is said to be a Mersenne prime. Page contents: Early History; Perfect Numbers and a Few Theorems; Table of Known Mersenne Primes; The LucasLehmer Test and Recent History; Conjectures and Unsolved Problems; Remote pages on Mersennes:
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 Mersenne Prime  Susan Stepney
Susan Stepney discusses Mersenne primes, the LucasLehner test, and perfect numbers, and supplies links to other relevant sites and print references.
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 Mesodynamics  Randall D. Peters; Dept. of Physics, Mercer University, Macon, GA
The study of nonlinearity, chaos, and complexity in mechanical systems. Research, Pendula, Sensors; download simulations of mechanical oscillators. Explore the pendulum area of the site to find pages on Science as Art, e.g. BowlingBall Pendulum Art or
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