 Mathematische Basteleien  Juergen Koeller
A collection of puzzles: pentominoes, Rubik's cube, tangrams, magic squares, and more. Many include directions for building a physical model of the puzzle, as well as comments on solutions. Other topics include numeric palindromes and building an origami
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 Math Fun and Educational Gifts and Specials  24Hours7Days
Purchase Clever Catch Balls, Fraction Bars, Decimal Squares, Math Chase, and other board games and manipulatives for practicing addition, algebra, decimals, division, fractions, money, multiplication, patterns, subtraction, and time.
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 Math Game Using A TicTacToe Board (SMILE)  Gertrude Franklin, William Penn
A lesson for the elementary grades that introduces addition, subtraction and
multiplication by using TicTacToe methodology; introduces a new method in using the TicTacToe grid; and presents a new problemsolving method. From the Recreational and
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 Math in a Box: math help and advice for parents and students  Susan Johnsey
Author and designer of the site offers help and advice to parents and students with math problems, and also offers online algebra classes and a free placement test. Math in a Box is an actual box, with manipulatives similar to Cuisinaire rods.
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 Math Lessons  Cynthia Lanius
A variety of algebraic and geometric projects and puzzles that help students find mathematical patterns and formulas. The Million $ Mission explores exponential growth, a Fractal Geometry Unit teaches the secrets of fractals, the Mathematics of Cartography
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 Math Logic Project Page  Mary Lee Malen; The Levering School, Philadelphia, PA
A project plan, summary reports, content and results are included for concept puzzles in logic and math, involving teamwork, handson activities, and the Web, as well as standards addressed, a hotlist of Web resources, and pictures of students. Toothpick
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 Math  Melody House  Melody House
Educational recordings, counters, sorting trays, toy coins, and other colorful manipulatives from the publishers of Jump into Math by Rae Pica, Moving To Math by Pam Schiller, Math in Minutes by Sharon McDonald, and Math All Around Me and Learning Rocks
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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 Moves!
Experiential installations that "stimulate mathematical imaginations and build the mathematical abilities" of interest, confidence, and skills. Museum exhibits have included "Balance and Imbalance," "Comparing Frequencies," "Shadow Fractions," "Scaling
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 MathResources247.com  Ampac Enterprises, LLC
Educational math toys, games, activities, and teaching supplies such as MathSafari, Hot Dots, Math Ad Libs, overheads, geoboards, algebra tiles, balances, and play money (realistic looking coins).
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 The Math Studio  Catheryne Draper
A resource for teacher education, with some howto strategies (see, in particular The Algebra Game. The Math Studio is located on Washington Street in Salem, Massachusetts. It features programs to help those who favor visual and tactile learning styles
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 MathTacular  Avyx, Inc. DBA MathTacular
Packages, manipulatives, and DVDs of creative realworld examples for math instruction. Learn Unbelievably Understandable Math™ with "Professor" Jeff.
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 Math Technique in Multiplication and Division of Fractions (SMILE)  Frieda Garth, Farragut Career Academy
A lesson designed to teach students to multiply and divide fractions by whole numbers and fractions. From the Arithmetic section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement.
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 MathUSee  Steve Demme
Manipulatives, video instruction, and textbooks for the MathUSee curriculum, which ranges from place value through precalculus. Download competency exams; read testimonials; participate in the MathUSee discussion forum; follow Ethan Demme's blog;
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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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 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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 Measurement (cup, pt, qt, gal) (SMILE)  JoAnn Campbell, Leslie Lewis School
A 5th grade lesson designed to teach students to rename measurements with cups, pints, quarts, and gallons, and to choose appropriate units of capacity. From the Geometry and Measurement section of a collection of almost 200 single concept lessons by
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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: 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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 Measurements In The Metric System (SMILE)  Christine Fair, Farragut Career Academy
A 3rd grade lesson designed to teach students to estimate and then measure to the nearest inch and centimeter. From the Geometry and Measurement section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for
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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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 Measuring for Cookies (SMILE)  Sally J. Hill, Roberto Clemente Community Academy
A lesson designed to teach students to measure ingredients using standard and metric measuring utensils; read envelope contents and follow directions in sequential order; and make a batch of chocolate chip cookies. From the Practical and Applied Math
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 Measuring in Inches and Centimeters (SMILE)  Debra Thomas, Douglass Math and Science Academy
A 6th grade lesson designed to teach students how to measure in inches and centimeters. From the Geometry and Measurement section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement.
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 Measuring Mixed Numbers (SMILE)  Karen Trout, Sumner Math and Science Academy
A lesson for grade 5 designed to teach students the need and everyday use of mixed numbers; to measure different lengths to the nearest fraction of an inch; to review equivalent values of fractions; how to come up with the common denominator and why;
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 Meridian Math Software  Meridian Creative Group, Larson Texts, Inc.
A publisher of supplemental educational math materials for students in grades K8, offering a range of comprehensive, interactive, math software programs: Larson's Excel @ Algebra; Middle School Math; Leapfrog Math (K2, 36); Larson's Sliding GeoBeads,
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 A Method of FrontEnd Arithmetic (SMILE)  Eddie Newton, Carver Area High School
A lesson for grades 312 designed to teach students to transfer computational fatigue from the most significant to the least significant columns; eliminate carryovers and their errors; and use one or more of the fundamental laws of commutation, association
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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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 Mindstein
UK distributor of extensive range of Cuisenaire products.
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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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 Mixture Problems (SMILE)  Alphonso Kennedy, Lindblom Tech. High School
A lesson for grade 9 designed to teach students to write an equation and solve mixture problems. From the Practical and Applied Math section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement.
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 Modeling Permutation Group (SMILE)  Mary Margaret Nee, Von Stueben Science Center
A lesson designed to teach students to construct equilateral triangles on cardboard; develop the transformation concept with a one to one correspondence; generate the rotation and reflection table; and deduce from the model the abstract axioms of a group.
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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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 The Moebius Strip  Jan Garner
An exercise on making a Moebius strip (a loop of paper with a half twist in it). How to make it, what to do with it, where to find it on the Web.
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 The Moebius Strip (SMILE)  Arnita Newton, Kenwood Academy
A lesson that investigates mathematical patterns using the Moebius Strip. From the Recreational and Creative Math section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement.
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 Money: Demonstrating Coin Values up to $1.00 (SMILE)  Camille Gales, Coles Elementary School
A lesson designed to teach students to use a variety of coins to make change up to the value of a dollar. From the Arithmetic section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement.
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 Money Matters (SMILE)  Barbette Flennoy, Joseph Stockton School
A lesson designed to introduce students to different countries' money and the United States monetary value of a penny, a nickel, a dime, and a quarter. From the Practical and Applied Math section of a collection of almost 200 single concept lessons by
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 Money Sense (SMILE)  Marie Bijou Wong, Joseph Warren Elementary School
A lesson designed to teach students to identify and know the value of quarters, dimes, nickels, and pennies; to use a variety of coins to show the value of a dollar; and to count the exact amount of purchase. From the Practical and Applied Math section
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 Monkey Pod Games  Monkey Pod Games
Monkey Pod Games specializes in puzzles that can be used in the math classroom in order to help students understand mathematical concepts more easily.
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 More than Magic Squares  Ivars Peterson (MathLand)
Peterson writes about magic squares, quoting Benjamin Franklin's interest in them. In addition to giving a few examples, Peterson also mentions Victor E. Hill IV's musing about whether the discoverer of the magic square actually set out to find an example
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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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 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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 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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 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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 Multiplication and Areas (SMILE)  Albert Michael, Robert Fulton Elementary School
A lesson for grades 35 designed to teach twodigit multiplication using math facts; how to find areas of rectangles and squares using stamps and Lego pieces; and how to fill an order of items of equal and different prices and quantities. From the "Miscellaneous"
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 Multiplication (SMILE)  Virginia Muhammad, John Hope Community Academy
An elementarylevel lesson designed to teach students to perform basic computations using multiplication, and to use the operation to evaluate expressions involving whole numbers and decimals. From the Arithmetic section of a collection of almost 200
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 Multiplication Table/ Girandola delle Tabelline  Renato Montemurro
In Italian: Video of the use of a patented Pythagorean windmill for learning multiplication tables. In Italian.
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 Multiplying and Factoring Polynomials Using Algebra Tiles (SMILE)  Regina Marshall, Curie Metro High School
A lesson designed to eliminate the frustration and anxiety involved in multiplying and factoring polynomials through the use of Algebra Tiles. From the Algebra and Trigonometry section of a collection of almost 200 single concept lessons by the Science
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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 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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