 The Woodrow Wilson Leadership Program in Mathematics  The Woodrow Wilson Leadership Program for Teachers (WWLPT)
WWLPT provides leadership development for and in collaboration with K12 teachers through residential institutes, outreach institutes held around the country, publications by and for teachers, listservs, and its web site. Its mathematics resources include
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 Word.Net's Ambigram Website  David Holst
An ambigram is a word or words that can be read in more than one way or from more than a single vantage point, such as both right side up and upside down (from Latin: ambi=both + gram=letter). Read the FAQ or create your own ambigrams online.
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 Word Problems  Math Forum, Ask Dr. Math FAQ
When I'm given a 'word problem', where do I start? A variety of approaches for tackling word problems.
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 Words & Numbers
Providers of content development services to K–12 educational publishers in the basal, supplemental, assessment, and new media markets. In particular, see their featured math projects and activities for the CBS television drama NUMB3RS. Founded in 2000
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 Working Together  Math Forum, a Classic Problem from the Ask Dr. Math FAQ
Jack can paint a house in 5 days, and Richard can paint the same house in 7 days. Working together, how long will it take them to finish the job?
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 Working with Fractions Using Pattern Blocks  Margo Lynn Mankus
The objective of What's My Number? is to name the size of an object given the size of 1 unit. Materials include pattern blocks cutouts, a pattern block grid, a pattern block Java applet, and links to other pattern block activities elsewhere on the web.
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 Workplace Essential Skills: Resources Related to the SCANS Competencies and Foundation Skills  Employment and Training Administration, U.S. Dept. of Labor
This PDF report provides the results of a comparison of the workplace basic skills defined by the Secretary's Commission on Achieving Necessary Skills (SCANS) with skill frameworks developed by a variety of national and international organizations. The
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 Worksheet Creators  Dan Perkins
Flashbased Worksheet Creators built to easily and quickly generate diverse worksheets for addition, subtraction, multiplication, and division. Shareware.
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 Worksheet Factory  Worksheet Factory
Free math worksheets and flash cards that can be generated and printed from home.
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 Worksheet Genius  Simon Currigan
A free website full of printable worksheets, puzzles, and activities that can be differentiated and randomized at the touch of a button. Designed for those working with children at primary or elementary school.
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 Worksheet Library  Worksheet Library
Standardsbased worksheets. Five hundred available free for trial purposes, across all subject areas. Membership required for access to other worksheets. All in PDF format, with answer keys.
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 Worksheets  RHL School
Worksheets for teaching and reinforcement, with answer keys where appropriate, for: English Basics, Mathematics Computation, Mathematics Problem Solving (most appropriate for 4th and 5th grades), Reading Comprehension, and Reference Skills, plus a section
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 Worksheet Works  WorksheetWorks.com
This site generates high quality PDFs of worksheets with the flick of a few checkboxes. Just specify level of difficulty, range of numbers, font size, or other parameters.
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 World Education.Net Directory  Edutech
A searchable CDROM in the form of an offline browser that provides everything needed to help teachers get started using the Internet, providing a database of institutions involved in education worldwide, including email addresses, contact names and details,
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 World Math Day  3P Learning
The World Math Day website provides five to eighteenyear olds with mental arithmetic questions to solve in competition with other math students from around the globe. Recent World Math Days, which take place in early March, have attracted participation
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 World of Teaching
Free Microsoft PowerPoint and whiteboard presentations for teachers. In particular, browse or contribute to the maths downloads. Formerly teacherpowerpoints.com.
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 The World of Trotter Math  Terry Trotter, Escuela Americana, San Salvador, El Salvador
A page of problems, problem sheets, and investigations, with links to image files of an inclass math newsletter, Trotter Math News. Of particular interest to the author are numbers: happy and dizzy numbers; palindromes; super squares; perfect, amicable,
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 World Population Counter  David Levine
A site that gives the world's population at the time of page access and at a time in the past or the future. If you wish to include the counter in one of your pages, instructions are included. Also includes clientpull for continuous updating of the global
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 World Time Zone  iSBiSTER International, Inc.
The exact time in world countries from Afghanistan to Zimbabwe, including, individually, the United States and the Canadian provinces. A software Time Zone Map program that does not require an active connection to the Internet is also available from this
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 World Wide Mathematics Tutor  ThinkQuest 1996
Fractions, with a bit about decimals: vocabulary, problems and solutions; adding and subtracting fractions and mixed numbers.
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 The World Wide Web and Pedagogy  Mathematics Education at The Math Forum
Examples of the hypertextual, hypermedia, communications capabilities of the Web in education: articles, courses, conferences, and model Web units.
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 Write Math with the Math Forum  Math Forum
A standardsaligned, gradespecific program to improve math problem solving. Engaging problems adapted from the Problems of the Week program have been correlated to state standards, math topics, and widelyused textbooks. A trial membership gives you
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 Writings from the MegaMath Project (MegaMath)  Casey, Fellows, Koblitz; Los Alamos National Laboratory
Documents containing classroom materials and discussions of mathematics pedagogy. The Los Alamos workbook; Lessons for math teachers; An hour in the classroom; Literacy lessons and mathematics learning; Computer science in elementary school; Combinatorially
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 Wuzzit Trouble  BrainQuake Inc.
Designers of arcade quality educational game apps that espouse embodied learning from which "you cannot fail to learn about mathematics." Use puzzlesolving skills to explore and practice basic arithmetic, integer partitions — even Diophantine equations
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 www4teachers
A center for practical ideas about technology in education. Articles published online, updated monthly: teacher interviews on firsthand classroom technology; interviews with educational technology leaders; interviews with kids; howto columns on classroom
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 www.onlineklas.nl  Paul Koning
Flash games for practicing addition (sommenkampioen) or multiplication (tafelkampioen), with timers, high score tables, and memory components (tafels oefenen). Also, drill in identifying fractions, or converting between mixed numbers and improper fractions
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 XNumber World  James Redin
With the Extended Numerical Keyboards with Structured DataEntry Capability method, enter a number in the same way as you think on the number; for example, input one million and fiftyseven with the four keystrokes 1, million, 5, and 7, in that order.
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 XP Math: Careers Database  Tak L. Hui
Designed to help students explore a wide variety of jobs that require mathematics, this database includes descriptions for the hundreds of kinds of jobs held by most of the American work force, and is searchable by math topic or industry sector. The job
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 XtraMath
A free web program for students, teachers, and parents that helps kids master basic math facts. XtraMath offers students its adaptive supplemental math activities for use in class or at home, along with a progress reporting system for teachers and parents.
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 The XY Chart  Speier Associates
A multiplication table that incorporates the Cartesian coordinates, and aspects of Piet Mondrian's designs for an aesthetically pleasing appearance, to teach elementary school students concepts of multiplication, Cartesian coordinates, arithmetic sequences,
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 Yahooligans! School Bell: Math  Yahoo
Yahoo's kids' guide to math sites including topics: Games and Puzzles, Geometry, Homework Help, Just the Facts, Mathematicians, Measurements, and Real World Math.
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 Yahoo! Science: Mathematics: History  Yahoo! Inc.
Searchable math history links: Mathematicians, Pi, and miscellaneous links.
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 Yahoo! Science: Mathematics: Numerical Analysis: Numbers: Specific Numbers: Pi  Yahoo! Inc.
A searchable collection of approximately 100 WWW pages having to do with Pi, in the following categories: Calculating Pi; Clubs; Decimal Digits; History; Holidays; Mnemonics; Poems; Search Engines; Web Directories.
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 Yahoo! Science: Mathematics  Yahoo! Inc.
All the best on the Web in math including Indices, alphabetically listed by category: Academic Papers; Algebra; Applied Mathematics; Books; Calculus; Chaos; Combinatorics; Complex Systems; Conferences; Education; Employment; Entropy; Equations; Ethnomathematics;
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 Yahoo! Search Options  Yahoo!
Search all of Yahoo by keyword.
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 Yahoo  Yahoo! Inc.
Search the entire Yahoo database or within categories and subcategories. Major categories include Arts & Humanities; Business & Economy; Computers & Internet; Education; Entertainment; Government; Health; News & Media; Recreation &
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 YMath Mathematical Models  Jan de Koning
Models and building boxes for education include magnetically connectable "mathmaker" and "polylinks," and tetrahedron puzzles. Other polyhedral furniture and housewares include cube moneyboxes of plywood, copper, and brass; dodecahedron bottle openers;
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 You Already Use Metric  Jim Loy
Cases where the metric system is already in use in the United States.
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 Young Engineers  The Decade Group
Enrichment courses for children and teenagers using LEGO and K'nex. Sessions such as Big Builders, LEGO Challenge, and GaliLEGO teach basic and complex mathematics, introduce famous scientists, and demonstrate powers and principles of physics. Based in
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 Young Investor  Columbia Management
Information on investing and investments, along with games and puzzles related to investing. Sections for teachers, parents, and students in grades K12.
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 Youth Accounts  FORUM Credit Union
Financial literacy games, stories, activities, articles, calculators, videos, and other resources  each set to a musical soundtrack  for learning about finance. Children aged 27 learn with Flip and Flop the frogs; eight to twelve yearolds, with
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 yyGrams Books: Books, Games, Puzzles  David Zethmayr
Zethmayr presents boundary mathematics to young children, introducing the ideas of logic, proof, and algebra far earlier than is usually attempted. Books, games, and puzzles on this site reinforce these ideas, and Zethmayr presents a seminar and children's
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 Zap Headquarters  Sue and Bob Durante
Sue and Bob Durante offer a wide variety of Math Programs for school assemblies, math nights, workshops and more. Blending magic with Math and teaching many bits of magical fun that use math and will get students to use math outside of the classroom.
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 Zapple Educational Consulting  Ray Appel
Free stuff: math resources, links and math movies in the style of the Mac/PC ads that teach us about math. Great for teachers for math discussion and older students. Also: workshops and other educational consulting services. Descriptions and testimonials
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 Zeno
School and community programs that "reframe math as fun and relevant" through games and other activities. See, in particular, the freely downloadable PDFs for lesson plans of math games such as 10 Pin Limbo, Twinks, and Farkle. Based in Seattle, this
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 Zeno's Paradox  Jim Loy
Among the most famous of Zeno's "paradoxes" involves Achilles and the tortoise, who are going to run a race. Achilles, being confident of victory, gives the tortoise a head start. Zeno supposedly proves that Achilles can never overtake the tortoise. A
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 Zimaths  University of Zimbabwe
An electronic maths magazine with clever, amusing articles written to supplement the resources available to Zimbabwean students, most of whom do not have access to extrasyllabus information. Features include: How number plates and ISBNs work; Statistical
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 Zoltan Dienes' Web Site  Zoltan Dienes
"Math through play" from a developer of psychomathematics, multibase blocks, and the sixstage theory of learning mathematics. Freely download PDFs of Dienes' Ruritania stories and math games such as Strip Mathematics, Circular Villages, Six Stages with
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 Zombie Cat  Diego Fonstad
Zombie Cat shares learning catalysts  those "perfect stories, explanations, or methods to teach complex mathematical and scientific concepts." Insightful math learning catalysts date back to January, 2011, with categories such as "Videos worth watching"
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 Zome System  Zometool, Inc.
Available in kits of various sizes, Zometool is a 31zone design tool and educational toy for kids, hobbyists, students, teachers and researchers. Precisionmolded in ABS plastic, Zometool models spatial structures representing hyperspaces of up to 31
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