- Devising channels that nurture ingenuity and creativity in mathematics classes. - Helen Christensen; Loyola College; The Math Forum
Summary of a presentation given at the 1996 Joint Mathematics Meetings in Orlando, Florida. Original projects and individual journals can challenge students who are more linguistically oriented, and who crave expression for their ingenuity and creativity
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- DG Differential Geometry (Front for the Mathematics ArXiv) - Univ. of California, Davis
Differential Geometry preprints, from the U.C. Davis front end for the xxx.lanl.gov e-Print 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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- The Diamond Theorem - Steven H. Cullinane
Finite projective geometry explains the surprising symmetry properties of some simple graphic designs -- found, for instance, in quilts. Links are provided for applications to sporadic simple groups (via the "Miracle Octad Generator" of R. T. Curtis),
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- Diario Fractal - Today´s Fractal - Juan Pablo Braña
A site from Buenos Aires, in English and Spanish, with a different fractal art image every day and archived galleries of past images.
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- Dice and Valentine's Day Symmetries (Math Chat) - Frank Morgan; Christian Science Monitor
A dice challenge from S. H. Logue: The six faces of four dice have these numbers on them: A 1 1 5 5 5 5 B 4 4 4 4 4 4 C 3 3 3 3 7 7 D 2 2 2 6 6 6. You and your opponent each choose one die to use throughout the game. Each round you both roll, and the
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- A Dice Game - Doug Ensley, Shippensburg University
In this game, two players roll dice repeatedly taking note of who has the higher roll each time. The original number of dice for each person and the number of rolls are set by the user. At the end, the percentage of wins for each player is displayed.
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- Dictionary of Algorithms, Data Structures, and Problems - Paul E. Black
Originally compiled for the CRC Dictionary of Computer Science, Engineering and Technology: a dictionary of algorithms, algorithmic techniques, data structures, and archetypical problems, with related definitions. Algorithms include common functions,
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- Dictionary of Mathematics (English-Spanish / Spanish-English) - Kenneth Allen Hornak
A comprehensive bilingual dictionary covering everything in mathematics: applied mathematics, pure mathematics, algebra, statistics, geometry, arithmetic, calculus, game theory, topology, probability, trigonometry, economic theory, mathematics teaching
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- Dictionary of Number Words - Intergalactic Power & Light
A dictionary of English language words, phrases, prefixes, suffixes, and
symbols that describe numbers. Cardinal Numbers, Ordinal Numbers, very large numbers, Noninteger Real Numbers, Numeric Ranges.
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- A Dictionary of Units - Cleave Books
A summary of units of measurement world-wide (current units and a few of historical interest); conversion factors to the SI (Systeme International); an outline of the SI; its basic defining standards and some of its derived units; all the SI prefixes
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- Didax Educational Resources
Didax publishes and distributes books, manipulatives, and software for math, reading, science, and art. The site offers free demo software, product descriptions, information requests, technical support, and current national educational standards. Didax
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- Did You Know? Applications of Statistics - Ian Gordon; University of Melbourne, Australia
Short stories about the application of statistics in different fields: Analysis of Gambling Strategies; Random surgical operations; TV phone-in polls; Was it the orange juice?; Sunlight and skin cancer; Fire-fighters cause damage?!; What was the question
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- Die-Cast Polyhedra Models - Pedagoguery Software
Sets of small die-cast solid aluminum polyhedra, in various colors, available for online purchase.
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- Difference and Functional Equations - Dave Rusin; The Mathematical Atlas
A short article designed to provide an introduction to functional equations, those in which a function is sought which is to satisfy certain relations among its values at all points. For example, we may look for functions satisfying f(x*y)=f(x)+f(y) and
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- A Difference - Darren Kuropatwa
This Winnipeg pre-calculus teacher's blog serves to "... record and reflect on my personal evolution of how to integrate ... technologies into my teaching." Blog posts dating back March, 2005, include "Wikis As Assessment For Learning Tools" and "Great
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- Differential Equations (calculus@internet - Mathematica) - Christopher A. Barker
Mathematica Track. 1. Basics (Mathematica Overview; The Environment; Arithmetic; Using Variables; Working with Lists; Vectors & Matrices; Algebraic Operations; Functions; Calculus Operations; Graphics). 2. Differential Equations (Creating Slope Fields;
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- Differential equations in industry and commerce - TMR network - ECMI
Coordinated at the Oxford Centre for Industrial and Applied Mathematics, the network aims to enhance understanding of industrial processes and commercial operations through the use of reliable modeling, novel mathematics, and numerical analysis. Six young
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- Differential Equations Maple Worksheets - Rensselaer Polytechnic Institute
Maple worksheets and related PostScript files for teaching elementary differential equations are available for download.
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- Differential Equations - Math Forum
Links to some of the best Internet resources for differential equations: classroom materials, software, Internet projects, and public forums for discussion.
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- Differential Equations Resource Page - Gavin Larose, University of Michigan Math Department
PostScript labs, involving Mathematica 3.0 or better. Also 12 projects, with PostScript notes on solutions, and a brief list of links to other ODE resources.
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- Differential Equations (S.O.S. Mathematics) - Dept. of Mathematical Sciences, Univ. of Texas at El Paso
An online course: learning units presented in worksheet format review the most important results, techniques and formulas in college and pre-college differential equations. Sections include: Introduction and First Definitions; Modeling via Differential
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- Differential Geometry - Dave Rusin; The Mathematical Atlas
A short article designed to provide an introduction to differential geometry, the language of modern physics and an area of mathematical delight. Typically, one considers sets which are manifolds (that is, locally resemble Euclidean space) and which come
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- Differential Geometry (Graphics Archive, Special Topics) - The Geometry Center
Using differential calculus to study curves and surfaces in space.
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- Differential Geometry Images - Walter Seaman
Animations of differential geometry topics: images constructed by Seaman using the programs in Modern Differential Geometry of Curves and Surfaces with Mathematica (Second Edition) by Alfred Gray. Topics include: Curves with prescribed curvature and torsion;
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- A Different Kind of Multiplication - David P. Stern
Roman numerals were an improvement on older notation and useful for the abacus, but seemingly impractical for multiplication. Yet a multiplication method was developed, and is described here. The Romans did not understand why it worked, but we now realize
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- Different Ways to Represent Numbers - Chad Lake
Online paper that discusses and illustrates counting in bases other than 10; converting to decimal; the Snake Algorithm (the algorithm, summary of binary-to-decimal Snake Algorithm, decimal-to-binary Snake, extending the Snake to other bases, and summary
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- Diffpack - Numerical Objects Online
Diffpack is a collection of C++ modules containing a wide selection of interchangeable and application-independent components, useful as a set of linkable libraries integrated with existing applications or as a development framework including a fully
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- DigiArea Group - Helen Golovina
Makers of atlas™, a Maple package for differential geometry calculations that works with manifolds, mappings, embeddings, submersions, p-forms, and tensor fields; and LdeApprox™, a toolbox for Maple or Mathematica that finds analytical polynomial
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- Digi-Block - Digi-Block, LLC
Manipulatives for K-4 classrooms. Students pack individual blocks into holders to create larger blocks of 10, 100, and 1,000, exploring place value and operations and learning the base 10 number system visually and physically.
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- Digital Deletions - Pierre Ysewijn
An interactive JavaScript version of Conway's Digital Deletions game, in which numbers in a string are lowered to zero or erased. Users can play with different numbers of digits, different strategy levels, different starters, different sources of digits
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- Digital Generation Unit Conversions - Digital Generation
Choose from 26 different categories of engineering and scientific units. Also available at http://www.webcom.com/legacysy/convert2/convert2.html and http://www.legacysy.com/~legacysy/convert2/convert2.html.
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- DigitalLesson.com - Mark Tully
Website for middle school math teachers that has middle school math lessons, games, projects and activities for use in the classroom. Free newsletter, other resources for sale.
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- DigitalLesson.com: Middle School Math Downloads - Mark Tully
Free printable math games, a free PowerPoint Mathegories game, and a free newsletter for middle school math teachers five times per school year. DigitalLesson.com also offers downloads of middle school math lessons, projects, and games at reasonable
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- Digital Library of Mathematical Functions - National Institute of Standards and Technology
An updated, online version of Abramowitz and Stegun's authoritative Handbook of Mathematical Functions (with Formulas, Graphs, and Mathematical Tables), with extensions and innovative interactive features. See also the table of software for computing
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- Digital Library: Science, Mathematics, Engineering and Technology Education (SMETE) - NEEDS
This site contains a searchable working prototype of a National Science, Mathematics, Engineering, and Technology Education Digital Library; a prototype federated search for the math community and the American Mathematics Metadata Task Force (AMMTF);
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- Digital Library - The Exploratorium, San Francisco
The Exploratorium A-to-Z. Archived webcasts, web cams, past exhibitions: stills, movies, sounds, and other experimental items. Online versions of a few of the Exploratorium's interactive exhibits; the Exhibit Cross-Reference - an experimental database
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- Digital Manipulatives: New Toys to Think With - Resnick, Martin, Berg, Borovoy, Colella, Kramer, Silverman; MIT Media Laboratory
Manipulative materials such as Cuisenaire Rods and Pattern Blocks enable children to explore mathematical and scientific concepts such as number and shape through direct manipulation of physical objects. Resnick et al. have developed a new generation
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- Digital Mathematical Performance - Gadanidis, George; Borba, Marcelo; Hughes, Janette; et al.
Watch video, live-acted dramatic storyboards, and animations of how people "perform" mathematics: Flatland, "Help Me, Fermi," Should Parallel Lines Never Meet," "The Pleasure of Making 10" (linear equations), "The Waiter" (the missing dollar problem),
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- Digital Mathematics Archive - SunSITE.UBC.CA
A digital collection of mathematical sources, with a primary focus on documents from the late 19th century through today. Papers, letters, manuscripts, e-mail messages, Usenet-news postings, computer rendered images and computations, program source code.
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- Digital Math - Santa Barbara County Education Office
A site to assist Algebra I, Grade 7, and Grade 6 students, their parents, and educators with the California State Mathematics Content Standards. Log in for Quicktime that provides step-by-step instruction to solve problems aligned with the mathematics
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- The Digit Connection - Lizzie
A tribute to the number pi through music, poetry, and fiction. (Meet Sailor Pi!) Also includes a brief history of pi with some ways to calculate it, a quote collection, and ways to celebrate the number - even if it's not Pi Day.
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- Digits, Squares, and Cycles - Ivars Peterson (MathTrek)
Fascinating patterns lurk among the digits of whole numbers. Pick a positive integer, such as 57. Square each of the digits, then add the squares together: 5^2 + 7^2 = 25 + 49 = 74. Do the same thing with the digits of 74: 7^2 + 4^2 = 49 + 16 = 65. Keep
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- Digit's Website - Alex Vrenios
Downloadable short stories introduce mathematical concepts to early college students in a way intended to generate their interest.
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- Digitz: Multiplication Math Games - Fred Lusignan
A portable electronic multiplication game that reinforces these multiplication concepts: multiples, multiplication facts, factors, factor pairs, and sequencing. Players race against a clock, and the game handles single or multiple players. Order online
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- DIGSTATS - Statistics - Central VA Governor's School for Science and Technology
Pages for descriptive statistics, inferential statistics, and graphical analysis, from the 1997 Central VA Governor's School for Science & Technology. Activities for spreadsheets and the graphing calculator that explore measures of central tendancy
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- DIMACS Research and Education Institute (DREI) - Rutgers University
An institute from the Center for Discrete Mathematics and Theoretical Computer Science which takes the approach that research and education should work hand-in-hand, that collaborations between researchers and educators are formed by understanding each
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- DIMACS - Rutgers & Princeton Universities, AT&T Bell Labs, BellCore
The Center for Discrete Mathematics and Theoretical Computer Science, an NSF Science and Technology Center. DIMACS is devoted to the development of the interrelated fields of discrete mathematics and theoretical computer science, among the most rapidly
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- DimensionU
Creators of educational software that put the action adventure fun of mainstream video games in a learning environment that prepares students for high stakes exams. First person shooter games Dimenxian, Evolver, and Meltdown contain 3-dimensional virtual
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- Dinosaur Math Web Page - Jan Rottner; SCORE Mathematics
Use the Internet to learn more about dinosaurs. Calculate average weights and heights. Also included are lines to dinosaur bibliographies. Aligned to the California State Standards. From the Schools of California Online Resources for Educators SCORE Mathematics
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- Diophantine Equations - Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about Diophantine equations, from "find all positive integer solutions to 43x + 7y + 17z = 400" to a general method for solving them.
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