 Epson Omega Designs  Khaled Omran
Downloadable software for solving, plotting, and manipulating functions and matrices. Demo free trial versions or purchase Mathwizard, the matrices calculator, and the algebra calculator.
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 Essay Ideas  Jim Wilson, Dept. of Mathematics Education, Univ. of Georgia
For a course on Using Computers in Mathematics Instruction. Friday the 13th (show there are at most three and at least one Friday the 13th in each year, consider when two consecutive months can be have Friday the 13th); Gingerbread Man (a Microsoft Excel
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 Estadistika  SINCOW
Software for statistical analysis written in PHP: includes measures of central tendency, frequency distributions, median, mode, average, graphic results, surveys online. Free trial version. Free online calculator also available.
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 Euclid's Algorithm, Heron's Algorithm, Calculation of Pi (MSTE)  Kyte, Moore, Finch; University of Illinois at UrbanaChampaign (UIUC)
Problem (by HansGeorg Weigand): Euclid's Algorithm gives you the greatest common divisor of two natural numbers; explain the algorithm. Given two numbers (e.g. 121 and 33), calculate the gcd(121,33) (in EXCEL you need the "ifcommand"). Heron's Algorithm
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 Eulerian Video Magnification for Revealing Subtle Changes in the World  Wu, HaoYu; et al.
Freely downloadable Matlab code that takes standard video sequence as input, applies spatial decomposition and temporal filtering, then amplifies the resulting signal to reveal temporal variations in videos otherwise difficult or impossible to detect
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 Excel Everywhere.com  Framtidsforum I&M AB
Automatically converts a spreadsheet into a goodlooking and calculating web page. It can be used to present mathematics on the web, and for creating selfcorrecting tests. Teachers can get free licenses for student projects, so that these can be presented
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 Excel For Introductory Statistical Analysis  Prof. Hossein Arsham; University of Baltimore
An introduction to the basics of Excel and how to use it for statistical analysis.
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 Excel Models Blog  Jess
Blog about the use of Excel to analyze realworld problems mathematically. Posts, which date back to October, 2011, have included "Simple Excel Sales Dashboard," "Tutorial Using Concatenate Function In Excel," "Teacher Grade Book," "Buying House To Rent,"
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 Excel's Solver and Premium Solver Platforms  Frontline Systems, Inc.
A resource for users of spreadsheets, optimization, and other mathematical software. Solver.com's free support information for the standard Excel Solver is more extensive than Microsoft's own site for Excel. Includes a Solver Tutorial and a set of powerful,
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 Excel Traffic Problem (MSTE)  Kocinski, Clark; University of Illinois at UrbanaChampaign (UIUC)
Problem (by HansGeorg Weigand): there is a traffic jam on the highway when cars pass a building site. A model of this situation shows that cars drive with the same speed v and all have the same length l. For the distance d between two cars there are
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 Exploring Precalculus  William Mueller
A lively and intuitive introduction to precalculus. Materials center on three themes: functions, rates of change, and accumulation. Showing the subject from many angles, illustrations include algebraic, graphbased, and realworld examples, and feature
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 Exponential Fit: Running to Conclusions (MSTE)  Ed Malczewski; University of Illinois at UrbanaChampaign (UIUC)
A lesson that explores the process of finding the best fitting exponential curve to sets of data like the world record times for running the mile. Requires Internet access, a bag of Skittles, and Microsoft Excel. Analyze exponential fit for population
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 FastFig  FigLabs, Inc.
Makers of free apps for evaluating, formatting, editing, and sharing math on any Internetconnected device.
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 Fermat Computer Algebra System  Robert H. Lewis
Fermat is a computer algebra system that does graphing, and symbolic and numerical calculations. Fast and economical of space, the main version is oriented toward polynomial and matrix algebra over the rationals and finite fields; Smith normal form; polynomial
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 Financing Retirement Payments in the Future in Austria: Some Scenarios  Erich Neuwirth
An interactive spreadsheet to download for studying the effects of changing the retirement age. (Microsoft Excel 5.0 or higher must be installed on your computer.) The key number for judging the financiability of a retirement payment system is the ratio
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 The Flyspeck Project  Tom Hales
In pursuit of a formal proof of the Kepler Conjecture. The Flyspeck Project uses the Objective CAML programming language to investigate the density of a packing of congruent spheres in three dimensions. Start with the fact sheet.
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 Fractal Images  Softsource CAD
Images of the Mandelbrot set, a fractal generated from a simple mathematical formula, produced by DRAWING Librarian Professional (DP).
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 GAP: Groups, Algorithms, and Programming  GAP Group; UK, Germany, USA, Australia
A system for computational discrete algebra with particular emphasis on, but not restricted to computational group theory. GAP and its sources, including share packages, data library and a manual, are distributed freely, subject to conditions detailed
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 General Algebraic Modeling System  GAMS
A highlevel modeling system for mathematical programming problems. It consists of a language compiler and a stable of integrated highperformance solvers. GAMS is tailored for complex, large scale modeling applications, and allows you to build large
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 Geometric and Solid Modeling  Computer Science Dept., Univ. of North Carolina at Chapel Hill (UNCCH)
One area of focus for the UNC Research Group on Modeling, PhysicallyBased
Simulation and Applications. The field of solid modeling deals with the design and representation of physical objects. The two major representation schemata used in solid modeling
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 Geometric Modelling Library  Renishaw plc
A C++ library of 3D geometric modeling algorithms and bespoke software development servicesf or complex geometric operations. Trial download available, as well as commercial, academic, and personal licenses.
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 GiNaC is not a CAS  Bauer, Frink, Kreckel
GiNaC is an iterated and recursive abbreviation for "GiNaC is Not a CAS" (Computer Algebra System). It is designed to allow the creation of integrated systems that embed symbolic manipulations together with more established areas of computer science (like
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 Globewide Network Academy (GNA)
Browse or search a distance learning catalog containing over 15,000 courses and programs from kindergarten to doctoral programs (search for math to find relevant courses). GNA Laboratories offers free software and you can also buy books on distance learning
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 Googol+: Arbitrary Precision Calculator for Windows  Atelier Web
Arbitrary Precision calculator handlings a large range of operations from basic to advanced like factoring and continued fractions.
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 GraphCalc  Mike Arrison
A graphing calculator program for Windows. Features include threedimensional graphing, calculus, and statistics. Download a shareware version, read online documentation, request a feature, or read about the authors.
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 Graphe Easy  Olivier Ansquer
Featurerich yet easytouse 2d graphplotting Windows software. Demo version available. It allows users to draw many graph types (Cartesian, polar, parametric coordinates) and many other graphs such as conics, integrals, inequalities, or sequences. It
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 Graph FAWM  New FAWM Creations
Function graphing software that displays intercepts, points of intersection,
turning points, etc., good for drawing piecewise functions and investigating the location of the solution to linear programming problems. View screen shots; download a trial
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 Graphic Algebra: Explorations with a Graphing Calculator  Asp, Dowsey, Stacey, Tynan; Key Curriculum Press
A book of blackline master activities for algebra students to use with graphing calculators or graphing software such as NuCalc. Based on Australian research on teaching algebra. For grades 811.
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 Graphing Calculator 3D  Runiter Company
Makers of visual, tutorial, and computational software such as Smart Math Calculator, Graphing Calculator 3D, A&G (algebra and geometry) Grapher, Statistics Problem Solver, and Calculus Problem Solver.
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 Graphing Calculator for Mac and Windows  Pacific Tech
Graphing Calculator calculates and displays two and threedimensional mathematical objects easily, and saves animations as QuickTime movies. The site includes a list of features, a guided tour, a picture gallery, a free demo, and ordering capabilities,
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 Graphmatica  Keith Hertzer, kSoft, Inc.
An equation plotter with numerical and calculus features. Graph Cartesian functions, relations, and inequalities, plus polar, parametric, and ordinary differential equations. Up to 25 graphs on screen at once. Offers copy to clipboard (bitmap and WMF),
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 GraphPanel  David Binger; Centre College
A Java application that supports the interactive editing of simple graphs with labels. The program can produce PostScript images of the graphs, and these PostScript files can be included directly in TeX documents or converted (using other programs) to
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 Graph Theory Glossary  Chris Caldwell; Dept. of Mathematics & Computer Science, Univ. of Tennessee at Martin
A glossary that supplements Caldwell's Interactive Tutorials in Graph Theory written using the Web Tutor. Terms introduced in the tutorials are introduced; you may need to consult a library to find the definitions of more advanced terms.
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 Great Math Programs  Xah Lee
A listing about 40 excellent recreational math programs for Macintosh that do: polyhedra and Rubic cubes, curves and surfaces, fractals and Lsystems, tilings and symmetry, game of hex and game of life, chess and fiveinarow, peg solitare and polyominos,
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 Groupe Fractales (INRIA)  Benoît Leblanc and Frédéric Raynal
A group of researchers studying the application of fractal techniques to complex systems, especially signal processing. Introduction to the theoretical aspects of fractal analysis; genetic algorithms; introduction to timescale analysis, in French; applications,
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 hakank's homepage  Håkan Kjellerstrand
Codes and notes for constraint programming languages such as Picat, Mathematica, AIMMS+CP, AMPL, Project Euler, Frink, SABR, Eureqa/Formulize, and Comet. See also Kjellerstrand's coin and dice tossing games, Triss lotteries (Swedish scratch ticket games),
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 Heron's Calculation of Triangle Area (MSTE)  James P. Dildine; University of Illinois at UrbanaChampaign (UIUC)
The area of a triangle can be calculated using a formula attributed to Heron of Alexandria. This calculation requires that the lengths of all three sides be known. This activity includes an Excel file to calculate the area of a triangle, and Java and
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 HiDigit  Binary Things
Calculating software with extended capabilities, recommended for use by math, physics, and engineering students and teachers. The main advantage of the software is a simple input format even for the most complicated formulas.
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 HiQ Analysis, Visualization, and Report Generation  National Instruments
An interactive problemsolving environment where you analyze, visualize, and document realworld science and engineering problems. HiQ solves realworld problems using a notebook methodology that combines interactive analysis, data visualization, and
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 How to use a Chinese Abacus: A ComputerBased Tutorial  Jan G. Hogle
An abacus helps make abstract math concepts more concrete. This site includes a softwarebased tutorial to illustrate the basic use of an abacus. The tutorial presents a brief introduction; and illustrates, with graphics, text, and animation, how to represent
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 IBM ILOG CPLEX  International Business Machines Corp.
This mathematical optimization software features dynamic algorithm parameter control and postsolution information and analysis such as objective function value, solution variable and slack values, constraint dual values (shadow prices), bound sensitivity
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 iDeSolver  KeatsSoft Co.
iDeSolver is an integrated environment that simplifies the process of
solving ordinary and partial differential equations (ODE, PDE), linear and
nonlinear algebraic equations, with computational data and plot output
through MATLAB. The site offers
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 ILNumerics  Jonas Nordholt
This numerical library for .NET supports the creation of algorithms and visualizations for scientific computing and technical applications. Available in free, open source Community Edition as well as Professional Edition, which offers prebuilt binariesc
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 Image Coding Using Wavelets  Signal and Image Processing Group, University of Bath
Read the article "What makes a good orthonormal wavelet for image compression?" Download other wavelet articles in PDF or PostScript format. Visit the Wavelet Warehouse, a repository of wavelet filters (biorthogonal and orthonormal) to download and
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 iMath
A free mathenhanced Web browser/editor supported by a net service to enable
the sending, receiving, storing, publishing, and discussion of pages with
math notation.
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 Information Mechanics Group  Massachusetts Institute of Technology
A research group for the physics of computation. Resources for CAM8, a computer and operating system designed for work with cellular automata, and various papers, which are available for download in PostScript format .
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 INFORMS OR/MS Resource Collection
 Michael Trick, Carnegie Bosch Inst., Grad. School of Indust. Administration, Carnegie Mellon Univ.
An organized listing of sites concerned with the field of operations research, the technique of using modern scientific models to predict and compare the outcomes of complex systems, considering factors such as change and risk, with links to: FAQs; Societies;
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 Innovation in Education  M. Casco Associates
Educational software and free online courses in classical mechanics and chaos theory, free (demo version) downloads of mathematical modeling laboratories, and tutoring by email in physics and math. Math modeling programs include classical mechanics and
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 InquiCalc  Donovan Harshbarger
Use InquiCalc's 90 builtin functions to graph up to eight different plots on a single plane, customizing colors and other display parameters along the way. Save output in .BMP, .GIF, .JPG, or .PNG formats; or copy graphs from this graphing calculator
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 Integral Calculator  David Scherfgen
The Integral Calculator calculates definite and indefinite integrals (antiderivatives) of functions. This free online calculus tool, powered by the computer algebra system (CAS) Maxima, also dynamically typesets the user's input as a LaTeX formula using
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