 A Broken Calculator  Cut the Knot!, Alexander Bogomolny
Thoughts on the controversial question of using calculators in the classroom, and the author's belief that even a broken calculator may have its uses: the elementary mathematics curriculum may emphasize any or all of the paperandpencil, mental, or technologybased
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 Brownian Motion  Charlie Geyer
An applet that draws onedimensional Brownian motion, with source code and a link to statistical Java applets by others.
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 Brown Sharpie  Courtney Gibbons
"Mathematical cartoons inspired by Sharpie fumes," as penned during a graduate student's career at the University of NebraskaLincoln. When not doing math, cartoonist Gibbons describes herself as "worried about doing math (or drinking coffee and worrying
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 BR Solutions
An Icelandic company providing modeling and optimization software to businesses. Most products are specifically aimed at fisheries. Site is also available in Icelandic and Norwegian.
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 BUBL Link: Libraries of Networked Knowledge
A searchable national information service for the UK higher education community. Directory of UK organisations and institutions; Archive of LIS, journals, Internet development; abstracts, full text, hundreds of titles of journals; news: jobs, events,
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 Buffon's Needle  Michael J. Hurben
A Java applet that simulates a Monte Carlo method for the estimation of the value of pi, 3.14159265... The user controls the speed of simulating the dropping of up to 100,000 needles or pins on equally spaced parallel lines, while a bar graph displays
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 Buffon's Needle  Paul Kunkel
An investigation of the problem: Consider a plane, ruled with equidistant parallel lines, where the distance between the lines is D. A needle of length L is tossed onto the plane. What is the probability that the needle intersects one or more lines?
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 Buffon's Needling Ants  Ivars Peterson (MathTrek)
The idea of estimating pi by randomly casting a needle onto an infinite plane ruled with parallel lines was first proposed by the naturalist and mathematician Georges Louis Leclerc Comte de Buffon (17071788). In recent years, computer
simulations have
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 bugman123.com  Paul Nylander
Tessellations, gear spheres, hyperbolic geometry, fractals, hypercomplex fractals, minimal surfaces, and more original mathematical artwork. See also Nylander's simulations of physics phenomena such as the magnetic field of a solenoid, 2D waveparticles,
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 Building Models of Surfaces  Joan Hoffman, Swarthmore College
Physical models to be used as aids in understanding 3dimensional surfaces  some howto pages for building surfaces that appear in multivariable calculus, by Swarthmore College student Joan Hoffmann.
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 Bureau of Economic Analysis (BEA)  U.S. Department of Commerce
The nation's economic accountant, preparing estimates that illuminate key national, international, and regional aspects of the U.S. economy. Regional, national, and international data, articles, and products.
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 Bureau of Justice Statistics  U.S. Department of Justice
The BJS collects, analyzes, publishes, and disseminates information on crime, criminal offenders, victims of crime, and the operation of justice systems at all levels of government. Key statistics by topic; list of publications, with abstracts, many of
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 Bureau of Labor Statistics  JoAnn L. Yu
The BLS collects information on the U.S. labor force, the economy, etc. Includes "The Economy at a Glance," press releases with relevant statistics, timeseries of various data, regional data, various publications, and information about jobs in the bureau.
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 The Burr Puzzles Site  IBM
A Burr Puzzle consists of at least three rods intersecting each other at right angles. The most wellknown type is the six piece burr where three sets of two rods intersect each other. This site lets you explore six piece burrs by selecting from a list
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 Bus Boarding and the Theory of Knots  Roy Lisker
This article is a humorous application of basic Knot Theory to the situations encountered when people are trying to board a bus in a great hurry. Their trajectories create braided patterns whicha are 'analyzed' with the help of the theory of knots.
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 Buses on Quantum Schedules  Ivars Peterson (MathTrek)
Anyone who has waited for a bus in the city has probably casually observed that, after an inordinately long wait, two or three buses often come along at the same time. Mathematical models that simulate traffic flow confirm that bus bunching is a real
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 BusinessHigher Education Forum  BusinessHigher Education Forum
BHEF is an organization of Fortune 500 CEOs, prominent college and university presidents, and foundation leaders working to advance innovative solutions to education challenges in order to enhance U.S. competitiveness. BHEF addresses education issues
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 Business Mathematics  MAA Online
From the Mathematical Association of America's Basic Library List  a bibliography of articles (in print, not on the Web) on Business Mathematics: Basic Skills; Algebra and Finite Mathematics; Business Statistics; Business Calculus; Economics; Finance;
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 Business Statistics (BSAD 301)  L. H. Arjomand; School of Business, Clayton College & University
An online credit course (Georgia system) with lecture notes, Powerpoint slides, sample exam questions, course syllabus, projects, solutions to problems, mailing lists, statistics links, magazines/newspapers, library, FAQs, and a bulletin board. Lecture
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 Busyness Girl Mathematics  Maria H. Andersen, Muskegon Community College
Posts on this blog about technology for math courses have discussed WolframAlpha and other websites for online instruction as well as for classroom use.
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 Butterfly Station  Manfred Ullman
Applets for exploring spirographs, pendula, the Mandelbrot set, and Lorenz attractors.
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 The Butterfly Theorem  Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
Ten proofs (and a few variations) of the beautiful Butterfly theorem, with illustrations and remarks. Links to some generalizations: A Better Butterfly theorem, 2NWinged Butterfly theorem, several pages on the Two Butterflies theorem. Several of these
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 Bytes of Science: An Internet Magazine  David S. Mazel, Ed.
An Internet magazine on science and engineering, with tutorials and introductory articles on various areas of science, math, or engineering. Articles include: A Basis for Functions: The Fourier Series; The Fourier Transform: The Frequency in a Waveform;
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 Byte Works, Inc.
Developers of the apps iPhone Calculator, a scientific/logic/conversion calculator; and techBASIC, which takes advantage of the iPod's, iPhone's, and iPad's builtin accelerometers, gyroscopes, or magnetometers to collect information, process it with
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 C26: Geometry  Scott Thatcher; Dept. of Mathematics, Northwestern Univ., Evanston, IL
Syllabus for a Geometry course, with some solutions to problems in PDF format; Maple worksheets (version 4) for multivariable calculus.
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 CAARMS, The Council for African and Americans in the Mathematical Sciences  Mathematics Dept., SUNY Buffalo
An organization that highlights current research by AfricanAmerican researchers and graduate students in mathematics, strengthens the mathematical sciences by encouraging increased participation of AfricanAmericans and members of other underrepresented
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 Cabri Conic Macros  Jim King, University of Washington
Nine Cabri Geometry II macros for constructing conics from various givens and for constructing certain features of given conics. Contains a documentation file.
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 Cabri Geometry: Classroom Resources  The Math Forum
The Math Forum's page of links at the Forum and on the Web to dynamic interactive geometry classroom resources for Cabri Geometry. Books and Web sites; Frequently Asked Questions; exploring the basics; workshops; excerpts from the journal abraCAdaBRI;
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 Cabrigéomètre  JeanMarie Laborde
The French site for Cabri Geometry, the geometry software program. The site includes a brief history of the program, a list of new things on the site (see also CabriJava), Cabri product information, book and website references, and contact information.
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 Cabri Java Applets  Jenchung Chuan
Well over one hundred applets based on Cabri drawings.
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 CabriJava  JeanMarie Laugier; L'Université de Provence (AixMarseille I)
Optique, électicité, mécanique. CabriHop: Une série de constructions d'optique géométrique et physique, niveau lycée et un peu +, à visiter en premier pour les paramétrages de votre navigateur,
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 Cabri Java Project/Projet CabriJava
CabriJava allows you to create dynamic geometric figures using Cabri and publish them as Java applets. In English and French.
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 Cabriology  Fréderic Louis
In Dutch: a website about the software Cabri Geometry, with tutorials, videos, pictures and more.
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 CA Classical Analysis (Front for the Mathematics ArXiv)  Univ. of California, Davis
Classical Analysis preprints, from the U.C. Davis front end for the xxx.lanl.gov ePrint archive, a major site for mathematics preprints that has incorporated many formerly independent specialist archives. Search by keyword or browse by topic.
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 CADalog.com
An AutoCAD CAD Shareware Clearinghouse, offering a collection of over 4,000 shareware programs for CAD engineers, designers, graphics people, etc. Also a very large free 2d and a minimalcost 3d parts library with hardtofind parts.
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 CAD/CAM Developer's Kit C Function Libraries  John Keklak
The CAD/CAM Developer's Kits support very fast and reliable algorithms for
boundary offset, area fill, pocketing and area booleans. The offset
algorithm is an alternative to the Voronoi approach, and in many real world
cases is much faster and reliable.
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 CADCOM: Committee for the Advancement of Discrete and Combinatorial Mathematics  Chris Rodger, Auburn University, USA (Chair)
An international committee formed by the Institute for Combinatorics and its Applications (ICA) to present Combinatorics and Discrete Mathematics in its best light to all interested people and agencies, including university administrations, industry,
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 CaEst 1.2  Juan M. Lejarza
La primera versión modificada de un programa de Cálculo Estadístico. Abarca el cálculo de medias, varianzas, asimetría,
curtósis, índide de Gini, regresión de una o varias variables, cálculo
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 calc_reform  eMATH/AMS, Math Forum
A discussion around reform of the curriculum and the teaching of calculus and linear algebra, including differential equations, a mix of theoretical issues and concrete practices. Read and search archived messages; and register to post to the discussions.
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 Calc 360  Numerant, LLC
Calc 360 is a free, simple, and powerful calculator for your PC. Some of its main features include: adjustable precision, calculation history window, custom variables, loading and saving of calculations and more...
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 Calc 3D
Calculators for Windows 95/98/NT/XP designed to handle vectors, matrices, complex numbers, quaternions and coordinates. For point, line, plane, sphere, circle Calc 3D calculates distances, intersections, and some additional
information like volume and
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 Calcgate  Brette de la Houssaye, Eugene Kellogg, and Robert K. Tarquinio
A Matlab toolbox that calculates work, energy, and integral area from input of polynominal or Fourier series.
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 Calchemy Live!  Calchemy Software Inc.
Express the parameters of an equation in any convenient units of measure. Calchemy then checks the equation and parameters for dimensional consistency and makes all the necessary units conversions automatically. Categories include acceleration, angle,
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 Calculate the Distance Between Two Places  infoplease.com
How far is it from one place in the U.S. to another? As you type, this form automatically completes the names of populated places, schools, "locales," parks, islands, bars, lakes, reservoirs, bays, gaps, dams, glaciers, streams, wells, mines, bends, valleys,
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 Calculating Car Payments  Barbara Christopher
Lesson plan with the objectives of using a formula containing complex fractions and large exponents to calculate a monthly car payment, using the order of operations while putting such a formula into a scientific calculator, and seeing a very practical
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 Calculating Swarms  Ivars Peterson  Science News Online
Ant teamwork suggests models for computing faster and organizing better. Astonishing feats of teamwork emerge from a large number of unsupervised individuals following a few simple rules. This sort of selforganizing cooperative behavior among ants, bees,
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 Calculating the Volume of a Vase
 Web Feats Workshop II
Determine the volume of the vase pictured. The photograph shows the construction of the vase and that its height is 50 cm. Use the applet to find the coordinate values for the edge of the vase, and use the regression features of a graphing calculator
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 Calculation and the Chess Master  Ivars Peterson (MathLand)
In 1912, J. B. Shaw wrote in the Bulletin of the American Mathematical Society: "The game of chess has always fascinated mathematicians, and there is reason to suppose that the possession of great powers of playing that game is in many features very much
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 calculator.com  Athera Corporation
Free access to online calculators to help you solve problems and answer questions in the home, office, and school. There are calculators for finance, business, and science, cooking, hobbies, and health. Some solve problems, some satisfy curiosity, and
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 Calculator Directory  ArsRef LLC
Commercial calculating software arranged by category. One page of free online calculators.
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