 Investigating LCM and GCF Using Rods  Margo Lynn Mankus
The objective of the lesson plan Investigating LCM and GCF Using Rods is to look at the Least Common Multiple (LCM) and Greatest Common Factor (GCF) from "handson" patternbuilding to using set theory. With teachers as the intended audience, the activity
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 Investigating Patterns: Number Patterns Fun with Curves & Topology  Jill Britton
Annotated list of links within various number pattern, curve, and topology topics. Linked items feature activities for students. Topics include: prime numbers/magic squares, clock or modular arithmetic, the golden ratio, Fibonacci numbers, binary numbers/Pascal's
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 Investigating Patterns: Symmetry and Tessellations  Jill Britton
Thirty activities from a variety of Web sites, coordinated with a forthcoming book by Jill Britton for Cuisenaire/Dale Seymour, Exploring Pattern: Symmetry and Tessellations (March 1999). Topics include an introduction to symmetry; symmetry in the alphabet,
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 James P. Dildine  James P. Dildine
Interactive math lessons for exploring parabolas, triangle areas, Pythagorean triples, triangle angle sums (powered by a Cabri Java applet), cancer and mathematics (image analysis, and determining the area and perimeter of nonregular figures), systems
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 John Mason's Projects  John Mason
Projects by the author of Thinking Mathematically and former director of the Centre for Mathematics Education: Structured Variation Grids and other animations and applets; studies in algebraic thinking; mathematical explorations; MEMEs (Meaning Enquiry
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 Jon Kleinberg's Homepage  Jon Kleinberg, Department of Computer Science, Cornell University
Read Kleinberg's research on algorithms that exploit the combinatorial structure of networks and information. His work includes techniques for analyzing and modeling link structure in the World Wide Web and related information networks; discrete optimization
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 KidsPsych  Magination Press
Flash games to help young children develop cognitive thinking and deductive reasoning: Oochina on the Farm, Rotating Faces, Oochina in Space, I Spy, Oochina the Archeologist, Oochina's Doughnut Dilemma, Oochina the Treasure Hunter, Oochy's Cube Adventure,
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 Kids' Tech University  Virginia Tech
Kids' Tech University (KTU) sparks kids' interest in science, technology, engineering, and mathematics (STEM) through a handson activity, virtual lab, and interactive session, held once a month from January to April, in a lecture hall on the campus of
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 The Knight's Tour  Dan Thomasson
The Knight's Tour web site shows various ways to solve open and closed knight tours. The site also offers several animated tours, artwork, and new concepts (magic squares, tessellations, and conjectures about prime numbers) derived from knight moves on
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 language and literacy: Mathematics  John Bald
The author of The Literacy File and Using Phonics to Teach Reading and Writing, Bald teaches reading, writing, and foreign languages in the UK. His blog posts, which date back to August, 2008, have included "Language, understanding and confidence in maths,"
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 The Learning Box: K5 Math Software
Developer of elementary mathematics software for students in grades K5. Featured titles include The Manipulative Math Series: Logic Blocks, Base Ten Blocks, and the Peg Board (learning about sets). Shockwave Flash activities include Flowering Fractions
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 Learning Games and Activities for K12  Creative Teaching Associates
Over 200 nonelectronic learning games and activities for ages 4 through adult. Math products include flash cards, activity cards, board games, math chips, cards, books, cassettes for basic math facts drill, and many more. Products are also listed by
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 Learning Math  Annenberg Media
The Annenberg Foundation and the Corporation for Public Broadcasting (CPB) use media and telecommunications to advance excellent teaching in American schools. Video programs with coordinated Web and print materials are offered for the professional development
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 Learning to Learn: Problem Solving  Greg Gay, Learning Disabilities Resource Community (LDRC), University of Toronto
Find out about your learning style by solving challenging arithmetic, logic, and mathematical story problems. Puzzles include analogy exercises which reveal our abilities to infer, map meaning, classify, and alter knowledge in the face of novel learning;
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 Lesson Plan Search  Google
Free math lesson plans that make use of Google Earth, Google Calendar, Exploring Computational Thinking, and other products and projects of the search engine company: Telling time & Google Calendar; Human Dimensions Project; Median of Latitude Data;
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 Let's Count!  Cynthia Lanius
Colorful, busy (sometimes too busy for adults, but children are drawn to them) activities for learning to count. The activities can be done either on computers with Internet access (optimally), or they can be printed out and used as a paper and pencil
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 Let's Do Math!  Cynthia Lanius
Maria and Cassie love doing math. The first problem they solve together is counting all the squares on a checkerboard  not just the individual squares, but all the differentsized squares that could be counted. Other Do Math problems include probability
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 Letter/Number Puzzles  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about cryptograms, alphametrics, letter sequences, and other letter/number puzzles, such as SEND + MORE = MONEY.
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 Line Designs for the Computer  Jill Britton
Line designs are created by connecting points on lines or curves with straight line segments. When carried out on cardboard with sewing needle and thread, the process is referred to as Curve Stitching or String Art. If the family of straight line segments
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 Locker Problem  Suzanne Alejandre
A classroom activity (also called 1000 Lockers) aligned to the NCTM and California Standards, to be explored through the use of manipulatives and a ClarisWorks spreadsheet. Students then look for patterns and write the answer algebraically. The problem:
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 Logic and Reasoning (SMILE)  Pearline Scott, Greeley School
A lesson designed to teach students to use logic and reasoning strategies to classify blocks by their attributes; recognize one, two and three attribute differences; use Venn diagrams to form sets and show their intersection; and use the attribute blocks
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 Logic (SMILE)  M. Elaine Granger, Irvin C. Mollison
A lesson for grades 68 designed to use pattern puzzles to teach students to understand word problems by use of reasoning techniques; identify the validity or nonvalidity of the problems; discern which factors are needed for problem resolution; and use
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 Logicville
Anagram, chess, cryptarithm, cryptogram, doublet, logic, mathematical, magic word square, and tangram puzzles. Select a puzzle at random; solve the puzzle of the week. Interactive puzzles require Java.
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 Lure of the Labyrinth  Learning Games to Go (LG2G)
In this free online adventure game, middleschool prealgebra students rescue their pets, combat mysterious monsters, and embark on whimsical math missions to gain a better understanding of proportions, fractions, and ratios, variables and equations,
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 M2C: Maricopa Mathematics Consortium  Alan Jacobs, Project Director
A Consortium for creating mathematics programs in which students learn the knowledge, skills, principles, and applications they can use throughout life to become smarter employees, consumers, citizens, and learners; and to build a coalition of schools
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 Machines That Eat Your Words (MegaMath)  Nancy Casey; Los Alamos National Laboratory
An introduction to the concept of finite state machines, and how they are used to design computer systems that will recognize patterns. A finite state machine is an imaginary (or abstract) machine that is used to study and design systems that recognize
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 Magic Cards  Chunsheng Ban
You see four cards, each with eight numbers. Think of a number from 1 to 15; Check ALL the boxes below the cards that contain your number; Click on the button "What's My Number?"; Your number will be displayed on the screen. Based on an exercise in a
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 Make Math More  Make Math More, LLC.
Activities, lesson plans, extensions, teacher guides, student worksheets, and other materials created and sold by a Cleveland middle school teacher to engage his students by making math relevant to their lives: "Probability of Rock Paper Scissors"; "Creating
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 Making of America Books  University of Michigan
This digital library of primary sources in American social history includes dozens of schoolbooks on arithmetic and other mathematical subjects that date to the antebellum period through reconstruction. Search or browse scanned graphics or transcribed
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 The Map is Not the Territory  Malke Rosenfeld
Blog by a traditional percussive dancer (Appalachian style flatfooting and clogging and Canadian step dancing) who "teaches the math that directly relates to the process of making rhythm and patterns with the feet." Posts about the mathematics of percussive
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 Margo Lynn Mankus  Margo Lynn Mankus
Talks include Using Virtual Manipulatives on the Web to Develop Number Sense, Connecting Whole Number Arithmetic to Algebra: HandsOn/Number Sense Activities, and Learning About Nutrition Using the TI73 and the Web. Also, online or downloadable classroom
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 Mastering Mastermind  Ivars Peterson (MathTrek)
"Games offer wonderful playing fields for developing mathematical problemsolving skills. For Mathew Mitchell of the School of Education at the University of San Francisco, the preferred training ground is a classic game called Mastermind. "Students young
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 MathApplications  Cathleen V. Sanders
An interactive mathematics course offered via the Internet to students throughout the Hawaiian islands. Cathi Sanders, a teacher at Punahou School in Honolulu, teaches this course through ESchool, a pilot project of the Hawaii Department of Education
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 Math Becomes Way Cool  Keith Devlin (Devlin's Angle)
Over the past two or three years, books about mathematics and mathematicians have made their ways onto the bestseller lists, television series about mathematics have been aired, radio programs have carried stories about mathematics, and newspapers and
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 Math Craft  Cory Poole, administrator
A community "dedicated to the exploration of mathematically inspired art and architecture through projects, community submissions, and inspirational posts." Share images, videos, and other resources on the corkboard; post questions to the forum. The blog
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 Math Curriculum  Educational Explorers
A computer program for third grade, fourth grade, fifth grade, and sixth grade students to study mathematics, language and geography skills. The program contains 200 problems and their answer in English and Spanish, some of which can be accessed free
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 Math Dance  Karl Schaffer and Erik Stern
The Dr. Schaffer & Mr. Stern Dance Ensemble has performed and conducted workshops on math dance in hundreds of schools and conferences since 1987. From that work, CoArtistic Directors Karl Schaffer and Erik Stern wrote MathDance, a 132page book with
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 Math  Don Potter
Links and resources include the 1878 publication First Lessons in Arithmetic, a family heirloom that this teacher at Odessa Christian School (Texas) has scanned chapter by chapter, complete with woodblock illustrations and "slate exercises." From the
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 Mathematical Entertainment  Eric Hiob, British Columbia Institute of Technology
Instructions for building a pinball table that demonstrates Pascal's Triangle. Also, notes on the Travelling Salesman Problem; Finding Areas Using the Monte Carlo Method; Important Numbers (pi and e); the Inside or Outside Problem; and the Roller Coaster
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 Mathematical Gems
Brief articles include Irrationality of the Square Root of 2; The Best Card Trick; Boltzmann in Berkeley; Four of a kind and two jokers; Mathematical Paint (on Gabriel's Horn); How Many Squares, Mr. Franklin? Goldbach's Proof of the Infinitude of Primes;
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 Mathematics Across the Curriculum (MATC)  Dartmouth College
An NSFfunded project which strives to integrate the study of mathematics into the whole curriculum. MATC Courses: Mathematics and the Humanities (Pattern, Chaos, Late Renaissance Thought and the New Universe, Math and Science Fiction, Geometry in Art
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 Mathematics  Alameda County Office of Education
Resources include 5th and 6th Grade CST Released Test Questions with Reasoning; FlashPapers and PDFs of the hundreds chart, multiplication table, "tell me fast" dots, ten frames template, and tips for memorizing multiplication; and Philip Gonsalves' PDF
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 Mathematics Computation and Problem Solving  RHL School
Worksheets for addition, subtraction, and multiplication. Every time you revisit or refresh one of these practice sheets, it's new. Teachers may copy single sheets for all their students, or give students similar but unique sets of examples. See also
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 Mathematics Education Partnership Program (MEPP)  National Security Agency (NSA)
Collected learning units/lesson plans for elementary school (arithmetic, data analysis, fractions, geometry, probability/patterns); middle school (prealgebra, algebra/graphing/statistics, geometry, number theory, interdisciplinary); and high school (prealgebra,
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 Mathematics Education Resources at Acadia's School of Education  David A. Reid, Acadia University
Learn how to design mathbags, make a fraction quilt set, and teach with algebra tiles. Activities include Folding Fractions, exploring systems of linear equations with Geometer's Sketchpad, and Deductive Euclidean Geometry, as well as two Java applets,
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 The Mathematics of the Fibonacci Series  Ron Knott
Patterns in the Fibonacci Numbers (Cycles, Factors); The Fibonacci Numbers in Pascal's Triangle (Why do the Diagonals sum to Fibonacci numbers? Another arrangement of Pascal's Triangle; Fibonacci's Rabbit Generations and Pascal's Triangle); The Fibonacci
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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 Fun With Beanie Babies!  Amanda Blake, Heidi Gish, Amy Jackson, and Jessa Paschke
Find the next beanie baby in the pattern.
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 Math in Motion: Origami in the Classroom, K8  Barbara Pearl
Workshops and a book which use an interdisciplinary and manipulativebased approach to teaching mathematics, supporting the Common Core State Standards for Mathematics (CCSSM) and unfolding a positive attitude toward math and learning. Barbara Pearl developed
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 Math Is Power Math Puzzles  National Action Council for Minorities in Engineering (NACME)
Six Shockwave games. CodeBreaker requires using trial and error to deduce the correct string of colored circles, given feedback on position and quantity. In Space Tag, two players take turns moving on a grid, one of them attempting to occupy the other's
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