 Math Talks  Fawn Nguyen
Number talks (NTs) by Nguyen's middle school students. Several student observations follow each mental math prompt, which include "Estimate 8235 divided by 71"; "Would you rather....?" and "Are there more inches in a mile or seconds in a day?" and "Which
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 Math Tour  ThinkQuest 1998
A site designed to be entertaining and to bring together people of all ages with a wide range of math skills to interact and explore mathematics, featuring original math problems, humorous proofs of theorems, funny stories, and interesting facts about
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 Math Trivia  FunTrivia.com
Online multiplechoice (MC) quizzes covering topics in algebra, geometry, statistics and probability, calculus, measurements, and more. Register to record your high scores on the site; Find out how many others have played a given game, and how they rate
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 Math Tutors  Daniel Stanislaw Jankowski
Download "tasks," worked problems in English and Polish: complex numbers, differentiation, differential equations, functional analysis, calculus and integration, matrices and vectors, numerical analysis, series, and more. Jankowski also offers tutoring
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 Math Warehouse  Vernon Morris
Interactive programs that allow users to explore math concepts; a set of freely available worksheets for teachers; math store with books, puzzles, and games; and a newsletter. Covers a range of topics including linear equations, systems of equations,
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 The Math Worksheet Generator  MathAids.Com
Free printable worksheets, with answer key, randomly generated so they're different each time you request one.
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 Math Worksheet Printables  Anthony and Clara Rogers, HS Unlimited
Userfriendly math printable generators: Use our worksheet generators to print a limitless supply of math
worksheets. Topics include addition, subtraction, multiplication, division, reading clocks, counting change, working with fractions, word problems,
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 Math Worksheets
Free worksheets for practicing arithmetic, geometry, prealgebra, and algebra, accompanied by written explanations and instructional videos. Each worksheet comes with an answer sheet; select from a range of difficulty levels.
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 Math Worksheets Center
Thousands of teachermade K12 math worksheets, lessons, homework assignments, quizzes, and tip sheets. Browse by grade level or student age; each math topic links to an index of the remedial math worksheets that point up the skills needed to get to that
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 The Math Worksheet Site  Scott Bryce
An online math worksheet generator, for addition, subtraction, multiplication, division, fractions, measurement, graphing, and telling time, and including a one hundred chart.
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 Math Worksheets Land
Thousands of downloadable math worksheets, aligned to the Common Core State Standards (CCSS) and with solutions, by a retired teacher: addition, algebra, area and perimeter, basic operations, complex numbers, counting, decimals, division, estimation,
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 Math Worksheets  PedagoNet
PedagoNet is a Canadian site offering free resources for primary teachers, including build your own worksheets, premade worksheets for Grades 1, 2, 3, and 4, and flashcards for Grades 1, 2, and 3.
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 Math Worksheets World  Math Worksheets World
Math Worksheets World features printable math worksheets, lessons, and teacher materials. Created by math teachers for Kindergarten through High School students. Try samples free or sign up for a yearly subscription.
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 MathWorld Interactive  Carolynn S. Mortensen
Openended word problems and some answers from this nowdefunct project. MathWorld began as MathMagic FidoNet in 1991, and was dedicated to helping educators and parents motivate their students to solve openended word problems, communicate mathematically,
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 MathWorlds  SimCalc: Simulations for Calculus Learning
MathWorlds enables students to learn through exploration of animated worlds and dynamic graphs. The worlds present moving objects and characters in a variety of settings, such as elevators in a building or duckies on a pond. Manipulable graphs control
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 MathXL  Addison Wesley Longman
A Webbased tutorial system based on Addison Wesley math texts. For PCs running Windows 95, NT, 98, or 2000. MathXL offers practice tests correlated to the chapter tests in your book; personalized study plans, based on your test results, that list the
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 Mating Games and Lizards  Ivars Peterson (MathLand)
Is there a winning strategy for the game ScissorsPaperRock? It certainly doesn't make sense to show the same configuration each time. An alert opponent would quickly learn to anticipate your move, make the appropriate response, and always win. A similar
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 Matrix Algebra (S.O.S. Mathematics)  Dept. of Mathematical Sciences, Univ. of Texas at El Paso
An online course: learning units presented in worksheet format review the most important results, techniques and formulas in matrix algebra. Introduction to Matrices; Systems of Linear Equations; Determinant; Eigenvalues and Eigenvectors; and an Appendix
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 A Matter of Appreciation  Cut the Knot!, Alexander Bogomolny
It is possible to learn to appreciate painting without being a painter... by analogy, it is possible to appreciate mathematics without being a mathematician. Appreciation does not require mastery, but it is impossible without adequate knowledge. Knowledge
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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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 Maximizing & Minimizing the Area of Rectangles Given a Fixed Perimeter (SMILE)  Tim Amrein, Franklin Fine Arts Center
A lesson for grades 58 designed to teach students to analyze and solve problems in which rectangles with identical perimeters are compared to maximize or minimize area; collect data and search for patterns and generalizable relations; represent problem
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 Maximum Volume & Area with the Geometer's Sketchpad  David Purdy, Wisconsin Heights High School, Mazomanie, WI
Common in calculus and advanced algebra texts, these wellknown optimization problems now appear in high school geometry texts as interesting explorations that integrate measurement, model building, polynomial functions and use of the graphing calculator.
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 Maze Design  Adrian Fisher
What's new in the maze world? The latest maze news, plus general maze information: Tessellations & Tiling Patterns; 1998 Dragon Maize Mazes; World's Best Mazes for families to visit; World Maze Database (all the mazes on Earth, country by country);
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 MCAS Math 10 Resources  George C. Brackett
Over 90 past multiplechoice problems from the Massachusetts Comprehensive Assessment System (MCAS) 10thgrade mathematics test, with detailed solutions available by clicking a button at the bottom of the problem. Problems include those from strands Number
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 McSquared  Audrey McLaren
Blog of "a teacher's realtime journey into Web 2.0" for "anyone who loves to teach, loves technology but feels easily overwhelmed by it, nevertheless feels compelled to learn how to use it, needs things explained real slow like, is not afraid to ask
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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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 Measurements: Inches (SMILE)  Joyce McCoy, Spencer Math and Science Academy
A lesson for the primary grades designed to teach students to solve problems involving measurement using information taken from various items measured. Students measure to the nearest inch, identify the length and width of rectangles, write simple addition
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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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 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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 Median  Don Steward
Blog by a maths teacher influenced by Hans Freudenthal. A fan of unicase, Steward teaches 1016 yearolds in Shropshire (UK). His posts, which date back to November, 2007, have included "loooooong multiplication  grid method," "two reversal problems,"
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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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 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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 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 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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 Metamath  Norman Megill
A site for proofs and logic. Includes: Metamath Solitairea Java applet that lets you build simple proofs in logic and set theory (builtin: the axioms of logic and ZFC (ZermeloFraenkel with Choice) set theory) with source code and other web resources;
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 Michael Serra
From the author of Discovering Geometry: An Investigative Approach and Smart Moves: the Games and Puzzles series; videos such as DG Investigations and "How to Teach Math Anxiety"; articles and handouts on cooperative learning; speaking engagements and
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 Middle School Geometry (Manipula Math)  International Education Software (IES)
Over 50 applets illustrating topics from plane geometry: angles and parallel lines; congruent figures and triangles; quadrilaterals and conservation of area; similar figures; polygons; circles; and the Pythagorean Theorem.
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 Middle School Problem of the Week  Math Forum
A project designed to challenge middle school students with nonroutine problems and to encourage them to verbalize their solutions. From 1996 until 2002, submissions were read and assessed, and comments were returned to the students. The problems are
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 Middle School Problem of the Week  ThinkQuest 1996
A nolongeractive project from Matt Gehrett's Class, Grade 10, Ridgeview High School, Bakersfield, California, USA. A weekly problem at the middle school level, with archives of past problems and answers.
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 Mike's Archive of Riddles and Puzzles (MARP)  Michael Winckler
A puzzle of the week, and an archive of more than 120 puzzles and riddles, with solutions, published in Die FreizeitWoche, a weekly webzine for the AG of Prof. Bock at the IWR in Heidelberg.
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 Mike's Math Club  The Milken Family Foundation
A curriculum enrichment program, Mike's Math Club provides "handy hints" that promote mastery of such basics as doubledigit multiplication, and math games that show elementary school students how to use logic and deductive reasoning to create strategies
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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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 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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 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 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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 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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