 The Big Mac index  The Economist Newspaper Limited
The Economist's lighthearted guide to currency alignment based on the theory of purchasingpower parity (PPP). Never intended as a precise gauge of currency misalignment, "Burgernomics" has made exchangerate theory "more digestible" since 1986. Mouse
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 Big Math Attack!  Educational Software
For PCs, this game includes math solving and metric conversion as well as spelling and typing skills practice. (Spelling section is customizable.) Downloadable evaluation copy available in several versions.
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 BigPictures Index  MacTutor Math History Archives
An alphabetical list of pictures of mathematicians accompanying the archives.
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 Big Picture: What Does 'Numeracy' Mean?  Iddo Gal
Numeracy is a term increasingly used in publications aimed at adult educators, yet its meaning and purpose may be unclear. This article briefly examines the importance of numeracy and the implications for those working with the GED Tests.
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 BigPrimes.net  BigPrimes.net
An archive of primes, plus information on each prime, and on prime numbers in general, number systems, types of numbers, and universal constants. The number cruncher will tell you facts about numbers you submit.
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 The Big Six Skills: Information Skills Instruction  Eisenberg, Berkowitz
Information and technology literacy programs. Big6 is a systematic approach to information problemsolving, useful whenever an individual has an informationoriented problem. Six skills are listed, with examples for potential uses, a store, a bibliography,
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 Bilingual Mathematics Dictionary / Diccionario Bilingüe de Matemáticas  Norman Koch and Denise Meeks
An alphabetical list of terms in English with their corresponding Spanish translations, from abacus (el ábaco) to zone (la zona). The purpose of this glossary of math terms is to make readily available in one convenient document a list of terms
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 Bill Cutler Puzzles  Bill Cutler Puzzles, Inc.
Wooden puzzles for sale: six piece burr puzzles, rectilinear burr puzzles, nonrectilinear burr puzzles, boxfilling puzzles, and miscellaneous puzzles. The computer program BCPBOX solves boxpacking problems such as pentominoes; GENDA determines how
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 Billiards in the Round  Ivars Peterson (MathLand)
On a level, rectangular table, a practiced billiard player can return the balls to their original positions, repeat a shot, and obtain an identical result. The geometry of the table, however, can greatly influence the types of motion possible in a game.
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 The Billion Prices Project  Roberto Rigobon and Alberto Cavallo, Sloan School of Management, Massachusetts Institute of Technology
The Billion Prices Project monitors the daily price fluctuations of millions of items sold by hundreds of online retailers in more than 70 countries. The Billion Prices Project (BPP) then uses those data to conduct economic research into pricing and sales
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 Binary Cubic Forms and Cubic Number Fields (Organic Mathematics Proceedings)  Henri Cohen
A paper presenting a small part of the theory of binary cubic forms, in particular its application to cubic number fields. Most of the results are due to DavenportHeilbronn, but the algorithmic applications seem to be new.
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 The Binary System  Norfleet, Singleton; Wayne State University, Detroit MI
A short history of the binary system; binary to decimal and decimal to binary conversion; binary addition and multiplication; logic gates, and a glossary.
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 BinaryTranslator.com
Translate text to binary and vice versa, and similarly convert between binary and decimal.
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 Binomial Coefficients  Bill Hammel
A collection of identities and formulas involving binomial coefficients: defined by factorials, appearing in Pascal's Triangle, derived with choose notation and summation formulas, approximated by Stirling's Formula, and more.
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 Binomial Coefficients  Jay's Corner
A binomial is an algebraic expression with two terms, like x + y. When we multiply out the powers of a binomial we can call the result a binomial expansion. Multiplying out an expression is just a matter of using the distributive laws of arithmetic, a(b+c)
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 The Binomial Expansion and Infinite Series  Don Cohen (The Mathman)
Pascal's triangle of numbers, although named after Pascal, was known much before his time. If there is one piece of mathematics that exhibits many patterns, this is it. There are triangular numbers and tetrahedral numbers, and even the Fibonacci numbers
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 A biographical sketch of Ada Byron, Lady Lovelace  Dr. Betty Toole
A brief biography and book reference of Ada Byron, Lady Lovelace, one of the most picturesque characters in computer history, who suggested to Babbage a plan that is now regarded as the first "computer program." Also Ada Lovelace's Notes on her translation
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 Biographical Studies  Clark Kimberling; Dept. of Mathematics, Univ. of Evansville, Evansville, IN
Biographies of: Emmy Noether (18821935) mathematician; David Dale Owen (18071860) geologist; Joseph Granville Norwood (18071895) geologist; Margaret Chappellsmith (18061883) lecturer and writer; John Chappellsmith (18061895) artist and writer; Eduardo
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 Biographies Index  MacTutor Math History Archives
An index of pages on famous mathematicians throughout history, arranged alphabetically or chronologically and searchable by keyword. There is also an index of female mathematicians, and a full alphabetical index.
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 Biographies of Women Mathematicians  Agnes Scott College
Biographies in alphabetical and chronological order, and related resources on the Web. An ongoing project by students in math classes at Agnes Scott College in Atlanta, Georgia, to illustrate the numerous contributions by women to the field of mathematics.
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 Biography of M. C. Escher  Thames and Hudson's Escher Interactive
A biography of the wellknown, early 20th century artist. Escher's work is famous today for the imaginary worlds he created. He combined bizarre creatures and spatial illusions with craftsmanship and love of detail. Born in Holland in 1898, the son of
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 Biology and Other Natural Sciences, Behavioral Sciences  Dave Rusin; The Mathematical Atlas
A short article designed to provide an introduction to natural and behavioral sciences whose connections merit explicit connection in the MSC scheme: Chemistry, Biology, Genetics, Medicine, Psychology, Sociology, and other social sciences as a group.
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 Biomathematics  Department of Mathematics, Marquette University
Biological modeling refers to the development and analysis of mathematical equations that model biological phenomena. Accurate modeling depends on the interdisciplinary collaboration of mathematicians, biologists, and often other scientists as well; faculty
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 Biomedical Time Series Analysis  Christina Kendziorski
Biomedical time series are sequences of observations recorded over time (a simple example would be hourly measurements of the blood pressure of a patient). These series of measurements exhibit characteristics of the systems and mechanisms that generate
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 Biopolymer Calculator  Schepartz Lab
Calculate the molecular weight, the extinction coefficient, the concentration, and the melting temperature of a single stranded nucleic acid. Additionally, you can enter a protein sequence and calculate the molecular weight (using average isotopic mass),
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 BioTech: Life Sciences Resources and Reference Tools  Indiana University
A searchable site that assists in the location and use of biotechnology resources, including the biotechnology aspects of agriculture, medicine, veterinary science, and molecular biology/biochemistry (pure sciences). An illustrated Dictionary provides
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 The Birthday Problem  Math Forum, a Classic Problem from the Ask Dr. Math FAQ
What if somebody offered to bet that at least two people in your math class had the same birthday? Would you take the bet? How large must a class be to make the probability of finding two people with the same birthday at least 50%?
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 The Birthday Problem (MSTE)  George Reese; University of Illinois at UrbanaChampaign (UIUC)
This activity discusses the probability that there will be at least two matching birthdays in a small group of people. It includes an online program that creates a set of dates at random. Introduction, simulation, questions, an explanation, and a note
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 Birthday Surprises  Ivars Peterson (MathTrek)
It's rather unlikely that you and I share the same birthday (month and date). The more people you pull into the group, however, the more likely it is that at least two people will have matching dates. Ignoring the minor technicality of leap years, it's
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 Bisection Method Tutorial  Joseph L. Zachary
A tutorial that explores the bisection method for finding the roots of equations. Includes a Java applet that opens in a separate window, for use alongside the tutorial. From a Computer Science course at the University of Utah, and the book Introduction
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 BIT101 Lab  Keith Peters
Launch BIT101 Lab to browse Peters' repository of experimental Flash files, many interactive, dating back to 2001. He also provides tutorials on using Flash to simulate gravity, easing, elasticity, perspective, 3D rotation, and "the various little creatures
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 BitArt  Robert J. Krawczyk
Illustrated introductions to spirolaterals and strange attractors. See a selfrunning demonstration of a variety of spirolaterals, or generate one of your own and see all the reversals. The link of current exhibits lists installations showing strange
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 bitplayer  Brian Hayes
In Hayes' weblog, the author of the American Scientist Computing Science column elaborates on those articles, posts errata, records notes from conferences in progress, and explores other topics. The blog dates back to January, 2006, and includes articles
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 Bits and Bytes  Brian Metcalfe, Editor; Winnipeg School Division No. 1
A K12 education newsletter distributed throughout Winnipeg School Division No. 1 since October 1984. Its focus is to provide educators with tips and techniques to help them integrate technology to enhance learning in their classrooms. The site includes
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 BizMo Diaries  Kirby Urner
"On the road with global data." This open source developer's blog, which dates back to January, 2005, has included posts on math education, such as "Python for GIS Experts," "Memo to Gnu Math Teachers," "Playing with Blocks," "Story Problems," "Mathematics
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 BizWorld: Real World Math
BizWorld is a real world math program in which students apply their schoolwork to the world of business. Handson activities correlated to National math, economic and social studies standards, lead students through the steps of starting and running businesses.
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 B.J. Pinchbeck's Homework Helper  Bruce P. Pinchbeck and B.J. Pinchbeck
In 1996, when he was 10, B.J. (and his father) began compiling links to educational websites. The site has grown to conclude hundreds of sites that will help you with your homework, including a page of annotated sites for math and another for computer
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 Blackline Masters  Savetz Publishing, Inc.
Download free PDFs of black line masters for inch, polar, log, and semilog grids.
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 Blacks Academy  Blacks Academy
Extensive database of high school level resources for mathematics, suitable for teachers and independent students. Free with registration required. Britishbased curricula are served, but could be of great interest to American students, including sophomores.
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 Black Saturn Mandelbrot Set Explorer  Kokoska
Very high, high, and low resolution Java applets for zooming in on smaller and smaller areas and discovering the hidden complexities of the Mandelbrot set.
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 Blended Animated Teaching and eLearning  Dr. Massoud Hajsadr
Description of the author's pedagogical experiments with elearning and online animations.
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 Blended Learning and Teaching with Animation  Dr S. M. Hajsadr
Algebra lessons online. Free registration required. From the site: Electronic lessons are animated learning material which deliver classroom or tutor like teachings. They are developed following the strict guidelines drawn from many years of research.
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 Bletchley Park  The Bletchley Park Trust
Also known as Station X, Bletchley Park is the home of the United Kingdom's Government Code and Cipher School (GC&CS). Read about its history, including decrypting the German Enigma code, Alan Turing's contribution of the "Bombe," and the various huts
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 Blind Childrens Center
A nonprofit organization based in Los Angeles, CA (U.S.) available to blind and partially sighted children regardless of race, color, national or ethnic origin, sex, religion or ability to pay. Links to programs for infants and preschoolers; family
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 Block Schedules and Student Performance on AP Examinations  Robert Smith and Wayne J. Camara  collegeboard.com, Inc.
Download a PDF article that concludes that "[t]he instructional schedule does affect student grades on the four AP Examinations in this 1998 study after they have been adjusted for group differences in student ability. The results from this study generally
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 Block Scheduling Archive  Teacher Education Center, Academy One
A professional development discussion: several math teachers share their experiences with block scheduling.
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 Block Scheduling  Center for Applied Research and Educational Improvement (CAREI)
CAREI, part of the College of Education & Human Development of the Univ. of Minnesota, offers information for educators and administrators currently using the block system, as well as for schools considering switching from a schedule having 6, 7 or
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 Block Scheduling Effects on a State Mandated Test of Basic Skills  Veal, Schreiber; Education Policy Analysis Archives
A study that examined the effects of a trischedule on the academic achievement of students in a high school. The trischedule consisted of a traditional, 4x4 block, and hybrid schedules running at the same time in the same high school. The effectiveness
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 Block Scheduling Resources  Cleveland HeightsUniversity Heights School District
A collection of reports and discussions about block scheduling, and links to schools that use it.
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 Block Scheduling: Structuring Time To Achieve National Standards in Mathematics and Science  Bernard Durkin
The national standards for science and mathematics education call for sufficient instructional time for inquiryoriented activities, accompanying discussion, and explanations of concepts involved. Several of the standards will require increased time to
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