 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 Group Mathematical Logic
 LudwigMaximiliansUniversität, Munich, Germany
In English and German. Contact information, staff, conferences, seminars, and workshops, Ph.D. program, links, articles.
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 The Working Group on Automated Timetabling (WATT)
A professional association dedicated to the research of automated timetabling issues and methods. List of members, history of the organization, upcoming events, recent digests, membership information, and a bibliography of timetabling books and articles.
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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 Cuisenaire Rods In Mathematics (SMILE)  Willis Grace, O. A. Thorp Academy
A lesson for grade 4 designed to teach students about common denominators by teaching the numerical value of each underlined letter of the standard Rod Code; and to develop systematic usage for building new units. From the Arithmetic section of a collection
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 Working with Fractions in Java  Michael Gilleland
Explores various highways and byways of fractions, such as continued
fractions, Egyptian fractions, and Farey sequences, with Java source code.
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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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 The Work of Robert Langlands  Mathematics Dept., University of British Columbia, Canada
A selection from Langlands' professional correspondence, previously unpublished work, and published work now out of print. Thesis, papers, manuscripts, letters, and bibliography.
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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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 Workplace Preparedness Resources  H&H Publishing
Texts, workbooks, and assessment instruments devoted to helping educators and trainers increase the competence of those in the workforce. Materials are lively, economical, and focused directly on practical workforce skills and behaviors. Assessment instruments,
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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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 Workshop on Finite Groups and Their Automorphisms
A fiveday workshop on the theory of groups, and in particular the relationship between a finite group and another one acted upon by the first. Read about the workshop as well as its mini courses, invited talks, contributed talks, and poster session.
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 Workshop Software  Math Forum
When we run workshops we normally use Macintoshes hooked up directly to the Internet. The software we use is public domain or shareware. Current versions of the software are available from our software archives  you can download them directly from here.
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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 Mathematical Year 2000
On May, 6th, 1992, in Rio de Janeiro, the International Mathematical Union declared that the Year 2000 will be the World mathematical Year. The Declaration of Rio sets three aims: the great challenges of 21st Century; mathematics, a key for development;
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 A World of Color  Graphx Edge
Royaltyfree color fractal images and fractal collections available on CDROM. Also clip art, fonts, textures, and a Fractal Showcase.
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 World of Escher  World of Escher, Inc.
The world of M. C. Escher (18981972), the famous Dutch graphic artist most recognized for spatial illusions, impossible buildings, repeating geometric patterns (tessellations), and his incredible techniques in woodcutting and lithography. This site offers
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 World of Fractals  Adam Lerer
A general site about fractals, including image galleries, animations, descriptions of different types of animations, explanations, programs to download, and related links. See Types of fractals; read Understanding Fractals (The Basics, The Mathematics,
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 The World of Geometric Toy  Akira Nishihara
Play with animations and applets of Buckminster Fuller's Tensegrity and the Indian Ball (also known as the flexisphere), as well as wireframe renderings of the torus, the magic ring, the toroflux, the reversible polyhedron, and other objects. Nishihira
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 World of Statistics
Increasing public awareness of the power and impact of statistics on all aspects of society; nurturing statistics as a profession, especially among young people; and promoting creativity and development in the sciences of probability and statistics. Get
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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 of Words, Numbers, and Notes  Mike Keith
Mostly original diversions in the areas of mathematics, word play, and music, including a Cadaeic Cadenza, a long pi mnemonic. Also, Ailihphilia (literature and word play) and Scitamatics (mathematical diversions): the recreational study of words, numbers
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 Worldometers.info
Counters that display the realtime data on world population (e.g., births this year, births today, deaths this year, deaths today, net population growth for today), government and economics (daily government expenditures toward health care, education,
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 World Population and Four Dice (Math Chat)  Frank Morgan; Christian Science Monitor
Answers to the old challenge (Estimate what fraction of the people who have ever lived on Earth are alive on Earth today.) plus a new challenge and an additional problem and answer (courtesy S. H. Logue: Ann learned that her old dotmatrix printer can
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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's Fastest Man  Ivars Peterson (MathTrek)
The 1998 edition of The Guinness Book of World Records features an article about Donovan Bailey, billed as the fastest man alive. The article begins: "Canadian Donovan Bailey rocketed into the record books when he set a new world mark of 9.84 seconds
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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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 Worldwide Center of Mathematics  David B. Massey
The videotextbooks Worldwide Differential Calculus and Worldwide Integral Calculus with Infinite Series feature linked crossreferences, popup margin comments, interactive graphs, and relevant teaching videos embedded directly within its chapters. The
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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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 World Wide Web Course Tools  WebCT
WebCT can be used to create entire online courses, or to publish materials that will supplement existing courses. It uses WWW browsers as the interface for the coursebuilding environment; other than the browser, there is no special software to install.
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 WorldWideWeb for Operations Research and Management Science (WORMS)  Moshe Sniedovich; Dept. of Mathematics & Statistics, Univ. of Melbourne
A grassroots WWW site established by the Operations Research Group (ORG) at the Department of Mathematics, The University of Melbourne, Melbourne, Australia. WORMS' main objective is to complement the formal online activities of OR/MS Societies worldwide.
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 World Year of Physics 2005
The World Year of Physics 2005 is a United Nations endorsed, international celebration of physics. Events throughout the year highlighted the vitality of physics and its importance in the coming millennium, and commemorated the pioneering contributions
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 Would You Rather?  John Stevens
Choose between the two apparently equivalent choices — and justify your selection with reasoning: "Would you rather ... run the circumference of the circle OR perimeter of the rectangle? be given 100 grams of new nickels OR 220 grams of new dimes?
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 Wright Flyer Teachers' Lounge  National Aeronautics and Space Administration
Lesson plans include Wind Tunnel Data (lift and drag); Know all the Angles (does pitch affect lift?); Watch Your Altitude (the three axes of rotation and the movements of roll, pitch, and yaw); Getting the Wright Pitch; and Up, Up and Away (compare the
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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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 Writing a Math Phase Two Paper  Steven L. Kleiman, with Glenn P. Tesler; MIT
A discussion of the kind of writing appropriate in a paper submitted to the math department to complete Phase Two of MIT's writing requirement: a review of the general purpose of the requirement and the specific way of completing it for the math department;
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 Writing Assignments in Calculus  Tommy Ratliff; Dept. of Mathematics & Statistics, Wheaton College, Norton, MA
Imaginative paper proposals for SingleVariable and Multivariable Calculus courses cover subjects from "Confusion in Beverly Hills" (geometry, trigonometry) to "The XFiles Makes Me So Angry" (optimization of a function of two variables)  and many more.
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 Writing for a Math Class  B. Sidney Smith, Wendy Hageman Smith; Math Academy Online/Platonic Realms
A "minitext" concerning written communication in mathematics classes, for both students and teachers. Teachers' section discusses possible formats and assessment, and gives sample lessons; students' section gives practical tips on approaching a written
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 Writing in Mathematics  Dr. Annalisa Crannell; Franklin & Marshall College
Dr. Crannell's Guide to Writing in Mathematics, the checklist she uses, and writing assignments from her PreCalculus and Calculus I, II, and III classes. Contents include: Why Should You Have To Write Papers In A Math Class?; How is Mathematical Writing
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 Writing Math (Learning and Mathematics)  Joan Countryman; Math Forum
In her 1993 book Writing to Learn Mathematics, Joan Countryman, the Head of Lincoln School in Providence, Rhode Island, explores the relation between math and writing and provides a comprehensive description of the approach she takes to teaching math
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 Writing Proofs  Leslie Lamport
PostScript, DVI, and LaTeX versions of each (but no HTML) are available. How to Write a Proof: A method of writing proofs is proposed that makes it much harder to prove things that are not true. The method, based on hierarchical structuring, is simple
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 Writings for a General Audience  Marcus Jaiclin
PDF articles on popular and recreational mathematics by Jaiclin, an Assistant Professor at Westfield State University: Notes on Mathematics of Voting Methods; Fractals, Pascal's Triangle, and the padic Numbers; Airplane Passenger Seating Problem; No
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