 Math/Science Network  Betty Levitin, Executive Director
A nonprofit membership organization of educators, scientists, mathematicians, parents, community leaders, and government and corporate representatives whose mission is to promote the continuing advancement in mathematics and science education of all
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 Maths in the City  Marcus du Sautoy, University of Oxford
Mathematical walking tours of Oxford and London led by "mathemagicians" who reveal examples of maths hidden in the Beehive, the Bridge of Sighs, the Gherkin, the Sheldonian Theatre, St. Paul’s Cathedral, and satellite dishes and death rays. Click on the
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 Maths? No Fear!  Matt Skoss
Wiki for sharing practical ideas that engage kids in working as a mathematician, strategies for using Web 2.0 tools, and more. Become a member to access notes and other resources on the structure of maths tasks, problem solving, and more.
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 The Math Teacher's Daily
Headlines, stories, breaking developments, and other articles about math and the profession of math teaching. Crowdsourced by "spotters" who curate the contents, this digital newspaper began publication in June, 2011.
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 Math Teaching Videos  Colleen King
Macromedia Flash "videos" of problems being solved; students are invited to solve problems themselves following the given example, and then to make up and submit problems of their own. New videos appear each week. The goal of this program is to encourage
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 Math Towers  Dr. Geoff Roulet, Queen's University
Mathtowers.ca is a website where groups of Grades 7 and 8 students can collaboratively explore openended mathematics problems. Students are presented with a problem context and provided with a laboratory, interactive tools and recording space to support
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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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 MayaQuest  Classroom Connect
In February 1995, the MayaQuest team led by adventurer Dan Buettner embarked upon a wholly kiddirected bicycle expedition into the Maya world of Guatemala, Mexico, Belize and Honduras. The goal of the threemonth expedition was to engage kids and their
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 The Möbius Project  Maplesoft
Create, share, and grade Maple documents that feature interactive elements such as sliders and buttons.
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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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 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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 More Fibbery  Gregory K. Pincus
"Fibs./ Terse./ Defined./ As your tools,/ Twenty syllables;/ How you use them is up to you." The author explains this form of poetry and its two most important rules: the syllable count of 1/1/2/3/5/8  the first six digits from the Fibonacci sequence
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 Mr. Pitonyak's Pyramid Puzzle  John S. Pitonyak
A webquest in which students are divided into construction teams that research the cost of building a pyramid, explore actual pyramids through online exhibits, and submit calculations that they would use to build their pyramid. The site includes instructions,
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 Mr. Smith's Math Class  Terry Smith
Mr. Smith and his fourth grade students from Eugene Field Elementary School in Hannibal, Missouri, have put together a complete website documenting the work that they are doing this year. The math area of the site features: a request for math problems;
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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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 MY NASA DATA  NASA Langley Research Center
Webbased data, data analysis tools, and lesson plans. Mentoring and inquirY using NASA Data for Atmospheric and earth science for Teachers and Amateurs (MY NASA DATA) is a project to enable K12 teachers and students, as well as citizen scientists, to
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 My NMSI Story
Watch clips of U.S. students and teachers speaking about their participation in the National Math and Science Initiative's Advanced Placement Training and Incentive Program (APTIP). Upload your own video narrative about APTIP, which has expanded American
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 The National Budget Simulation  Schneiderman, Newman; Center for Community Economic Research, U.C. Berkeley
This simulation asks students to cut the 1995 fiscal deficit in order to achieve a balanced budget. Made to give students a better feel for the tradeoffs which citizens and policymakers need to make to balance the budget. Choose between a short and long
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 Net Investigations: Math  ELearning Team, Montgomery County (MD) Public Schools
Classroom webbased activities designed to support the Maryland State Department of Education Core Learning Goals and to build student reading and writing literacy, data literacy, and critical thinking skills, along with links to information about the
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 NetSolve  Jack Dongarra
NetSolve is a clientserver system that enables users to solve complex scientific problems remotely. The system allows users to access both hardware and software computational resources distributed across a network. Matlab and Mathematica client interfaces
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 Noon Day Project  CIESE Collaborative Projects
Over 2,000 years ago, Eratosthenes made a remarkably accurate measurement of the earth's circumference. This project is a recreation of that experiment and invites the collaboration of students living at different latitudes to take measurements of shadows,
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 The Noon Observation Project  Cathie Godwin, Kathleen Smith; College of Education, Univ. of Illinois at UrbanaChampaign
A joint effort among interested schools worldwide in accurately estimating the circumference of the earth. How to compute local noon at your location; the original 1999 form for submitting Noon Observations; an explanation of the formulas for computing
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 numb3rs blog  Mark Bridger, Department of Mathematics, Northeastern University
A blog where math professor Bridger posts mathematical comments on the TV show "Numb3rs". Dating back to February, 2005, posts include "Math and March Madness" and "Random motion and FokkerPlanck" and "Acoustic fingerprints and the JFK assassination"
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 OER Commons  Institute for the Study of Knowledge Management in Education
An open learning network for teachers and professors to access their colleagues' course materials, share their own, and collaborate. The Open Educational Resources site features tags, ratings, comments, reviews, and social networking functions, as well
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 Online Class: Internet Education Projects  TBT International, Inc.
A model project to show teachers how to integrate technology into the classroom. Designed so that live, interactive content will draw out technical skills. Subscribe by classroom to receive a printed teachers' resource guide; materials delivered free
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 Online Exhibits Hotlist  The Franklin Institute
A list of links to more than 100 online learning experiences for math and science, both interactive projects and exhibits.
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 Online Tutor: Math, Science, Computers, Etc.  Morris Roth
Online tutoring in math, physics, chemistry, biology, computer languages, English, and French. Inperson tutoring in Tulsa, OK.
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 Open Mathbook  Albert Schueller
Blog to "promote, discuss, and develop free and open source mathematics textbooks." Posts, which date back to December, 2011, have included "Saylor.org: Open Textbook Prize"; "Free DE and Real Analysis Titles from William Trench"; "JSXGraph: online interactive
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 Open Problem Garden  Matt DeVos and Robert Šámal
A collection of unsolved problems  mainly, graph theory, combinatorics, and number theory. A wiki for each open problem includes relevant bibliographical citations, importance rating, and recommendation for undergraduates. Navigate by math subject,
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 Organic Mathematics Workshop: The Proceedings  Borwein, Borwein, Corless, Jörgenson, Sinclair, eds.
Proceedings of a 1996 workshop held at Simon Fraser University, Vancouver, Canada. Speakers (top experimental and computational mathematicians); their articles, with equations, code, photos, videos, and annotations; and related resources and links. Invited
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 outofprintmath  Klaus Schmid
A blog for consumers of math books to "vote" for the outofprint publications they would like to see come back into print.
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 Pascal's Triangle Interface  Andrew Granville
A form that lets you visualize the entries of Pascal's triangle with respect to a modulus between 2 and 16. Select values for the number of rows, modulus, and the size of the image, and submit.
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 Pattern Pals  Kevin Roddy
If you like building designs with Pattern Blocks, you might enjoy being a Pattern Pal. Pattern Pals is a pen pal service with a twist: select a Pattern Pal Activity (Grab Your Crayons!; Adventures in Line; Symmetry; PaintbyNumber Pattern Blocks; Logo
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 Patterns  Suzanne Alejandre
Links to Web sites with patterns. Students look through the pages and answer these questions: How do natural patterns influence us? How do patterns help us to solve problems? Can you put elements of a pattern into an order that can be measured? that
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 Peter Ash's Thoughts on Math and Education  Peter Ash
Musings on doing and teaching mathematics, book reviews, and math problems both elementary and advanced from the creator of Cambridge Math Learning. Blog posts, which date back to August of 2007, include "Very Proper Fractions"; "Physical Models for NonEuclidean
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 Pick a number from 1 to 10 ... for SCIENCE!  Alec Perkins
"When asked 'pick a number from 1 to 10,' people tend to pick certain numbers more than others, in particular 7 and 4 over the extremes...." Participate by choosing your own number; see bar graphs and line plots of data submitted thus far according to
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 Poetry Patterns (TEAMS)  Jeannie Toshima; TEAMS Distance Learning, Los Angeles County Office of Education
Mathematical patterns in numbers and in poetry. This activity involves students in writing two forms of poetry  diamante and cinquain  that involve mathematical word patterns.
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 POLYA: Cooperative Solutions of Difficult Problems in Elementary Mathematics  Paul Yiu and Xiaodong Zhang, Moderators; Department of Mathematical Sciences, Florida Atlantic University
An archived discussion group for the cooperative solution of difficult problems in elementary mathematics through calculus, "preferably nontechnical in nature."
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 The polymath blog  Timothy Gowers
Massively collaborative mathematical research projects discussed and hosted here have included IMO Q6 2009, Density HalesJewett, Embedded c_0 or lp in explicit Banach spaces, and Finding primes deterministically. Proposals include Boshernitzan's problem,
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 Pop Clock  Susan Boone
A lesson on data collection, problem solving, research skills, interpolation of data. Students review the Census Bureau's home page on the Internet and gather data regarding trends in population. They study these data and make predictions of future populations,
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 The Private Eye  Kerry Ruef
A handson, investigative teaching approach that attempts to stimulate the wonder of looking closely at the world, thinking by analogy, changing scale, and theorizing. It uses everyday objects, a jeweler's loupe, and a series of simple questions, which
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 Project Atmosphere Australia Online  Sel Kerans; Australian Bureau of Meteorology
Online meteorological activities open to international schools. The site provides access to Australian weather observations, forecasts, and archived weather statistics, with information designed to educate the general public about weather and related
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 Project Euler  Colin Hughes
Browse hundreds of challenging problems that require mathematical insights as well as computer and programming skills to solve. Popular puzzles include "Add all the natural numbers below one thousand that are multiples of 3 or 5," "By considering the
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 Proofs Wiki  Brunner Nathan
A communitybased collection of definitions, proofs, and theorems. The Proofs Wiki composition interface supports LaTeX and tooltips.
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 The ProvenMath Project  Michal Ryszard Wojcik and Michal Stanislaw Wojcik
Proofs of the Fundamental Theorem of Algebra, the theorem about integration by change of variables for realvalued functions of nvariables, a derivation of Zorn's Lemma, and others. The site renders axioms and derives proofs using only ASCII characters.
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 QuasiTiler (Gallery of Interactive Geometry)  Eugenio Durand; The Geometry Center
Generate Penrose tilings or design your own nonperiodic tilings of the plane with this interactive application. In the process, you can select and visualize plane crosssections of a lattice in anywhere from 3 up to 13 dimensions. Geometry of Quasicrystals
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 Rainforest Realities  Furlano, Nelson, Rakes, Willis; Braceville Elementary School, Braceville, Illinois
A project for third and sixth graders, involving Internet research, data collection, and conservation efforts on behalf of the Brazilian rainforest. Site includes a summary of the project, scenario, sample student projects, and Internet reference links.
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 Randomise Me  Better Data Limited
This platform for running trials randomizes participants and asks them the questions you choose at prespecified dates or times. As study subjects report their outcomes, Randomise Me measures the difference between the two groups, and calculates the statistical
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 Rebecca Newburn
Links to this California teacher's Math 7 blog, and to her professional blog, a "fusion of best teaching practices, integrating technology and increasing compassion in and outside of the classroom." See also Newburn's select compilation of explanations,
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 Rectangle Pattern Challenges  Cynthia Lanius
Examine different stges of rectangle patterns, and describe what you must do to get from one to the next. Observe the designs looking for patterns. Use the symmetry of the design to help you count. Organize your information into a table. On square grid
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