 Efofex Software
Produce publication quality graphics for mathematics and science. Tools for math teachers include FX Draw, for drawing; FX Equation, for equations; and FX MathSpell, a mathematics dictionary addin for Microsoft Word. Tools for math students include FX
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 Eformulae.com
Eformulae.com is a online resource of engineering formulas, science formulas, math formulas, physics formulas, chemistry formulas, tables, glossary of terms related to computer engineering, manufacturing technology, mechanical engineering, agricultural
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 EggMath  Bradlow, Sullivan, Levy, UIUC
A collection of modules (including many interactive applets) for K12 classrooms, based on the theme of eggs. Topics include: the shape of an egg (addressing symmetry and crosssection, surfaces of revolution, pin and string construction of ellipses, Cartesian
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 EG Models (Electronic Geometry Models)  Michael Joswig, Konrad Polthier
A refereed archive of interesting geometric examples and visualizations, open for any geometer to publish new geometric models, or to browse the models for material to be used in education and research. The geometry models cover a broad range of mathematical
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 Egyptian Mathematics  Mark Millmore
A clearlywritten description of the Egyptian numerical system, with some practice problems from John Heaton and Pam B. Newberry to test your understanding. Java calculator adds, subtracts, multiplies, and divides in Egyptian numerals.
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 Egyptian Number Translation  Poseidon Software and Invention
A calculator that takes a decimal number and translates it into Egyptian hieroglyphs.
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 Egyptian numerals  MacTutor Math History Archives
Linked essay on the Egyptians' base 10 system of hieroglyphs for numerals, with separate symbols for one unit, one ten, one hundred, one thousand, one ten thousand, one hundred thousand, and one million. With references and other related web sites.
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 The e Home Page  Doug Sapp
The Euler's number home page: e to 100,000 decimal places, to 2,000,000+ decimal places; Top 1n(e^10) reasons why e is better than pi; the 15 digit club; fun facts and interesting things about e.
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 Einstein Archives Online  The Hebrew University of Jerusalem
Freely view thousands of Einstein's writings, digitized from the manuscripts held by the Albert Einstein Archives at the Hebrew University of Jerusalem: scientific correspondence, travel diaries, family letters, and more. The site also enables access
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 Einstein's Big Idea  WGBH Boston
Resources to accompany the PBS broadcast "Einstein's Big Idea," the theory of special relativity: program transcript; teacher's guide; inquiry and articles; and "Interactives, Audio and More," which includes video of ten top physicists each describing
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 Ejercicios Resueltos de Matemáticas  Sergio De Los Santos
Ejercicios resueltos para bajar (en forma Excel): Fórmulas, Aritmética; Álgebra; Trigonometría; Geometría analítica; Cálculo, Estadística, y Física.
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 Ejercicios y Problemas de Matemática  Pablo Mateus
Ejercicios y problemas de números (natural, entero, racional, real), estadística, ecuaciones, funciones, análisis combinatorio, probabilidad, trigonometria, geometria, y más. También, um glosario y consejo sobre pruebas
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 Eleanor Roosevelt Fund Award  American Association of University Women (AAUW)
Established in 1989, the Eleanor Roosevelt Fund Award honors an individual, project, organization, or institution for outstanding contributions to equity and education for women and girls. The award is given for a broad range of activities including classroom
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 Election Analytics  University of Illinois
Uptotheminute estimates for the probabilities of all federal elections that take place in a year when Americans vote for U.S. President: who will assume the presidency, and who will control the United States Senate. With oneclick buttons to adjust
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 Electrical Engineering Toolbox  Cody Miller, Aspen Labs, LLC
Calculate trace width, trace current, trace resistance, impedance, crosstalk (microstrip or stripline), and inductance (wire, parallel wires, coax, wire over plane, loop, rectangle loop, coil, broadside traces, and edgecoupled traces). Download "math
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 Electronic Bookshelf (Mathematics Across the Curriculum)  Dartmouth College
Materials produced by the MATC project are listed on the Electronic Bookshelf. Topics include: Algebra; Calculus and Differential Equations; Engineering; Physical Sciences; Art; Computer Science; History and Geography; PreAlgebra; Biology, Medicine,
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 Electronic Emissary  Judi Harris; Univ. of Texas at Austin
An Internetbased interpersonal resource online since February of 1993: a searchable database of experts and a way to request "matches" that helps teachers with access to the Internet locate other Internet accountholders who are experts in different
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 The Electronic Encyclopedia of Statistical Exercises and Examples
Supplementing introductory textbooks, the Electronic Encyclopedia of Statistical Exercises and Examples (EESEE) comprises over 80 "realworld" stories, or examples, about the uses and abuses of statistics and statistical inference, drawn from published
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 The Electronic Journal of Mathematics & Technology  WeiChi Yang, EditorinChief
The Electronic Journal of Mathematics & Technology (eJMT) publishes research addressing technologybased issues in all mathematical sciences. This international, refereed journal has four basic areas of interest: research in mathematics and its applications
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 Electronic Portfolios: A New Idea in Assessment  Anna Maria D. Lankes
An ERIC digest article on new authentic and performancebased measures of assessment, including projects that require students to demonstrate problemsolving skills as well as skills in analyzing and synthesizing information.
A new assessment measure,
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 The Electronic School  National Schools Boards Association (NSBA)
A supplement to The Executive Educator and The American School Board Journal magazines, published in cooperation with the Institute for the Transfer of Technology to Education (ITTE), a program of the NSBA. It seeks to be an editorially independent source
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 Elementary Computer Mathematics  Kenneth R. Koehler
An introduction to the mathematics used in the design of computer and network hardware and software. This hypertextbook's goal is to prepare the student for further coursework in such areas as hardware architecture, operating systems internals, application
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 The Elementary Preservice Teachers Mathematics Project  Suzanne Chapin, Principal Investigator
Improving preservice elementary teachers' mathematical knowledge for teaching (MKT). The Elementary Preservice (EMP) Teachers Mathematics Project has developed dozens of lessons and corresponding support materials — including video, PowerPoint
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 The Element: Science and Math  Deja.com
Searchable archives of math and science newsgroup postings. This community aims to share resources and give people an easy way to ask questions within relevant newsgroups, providing broad discussions of mathematical concepts from beginning to advanced
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 Elements Of Design  Colleen Deery
Explore galleries of fractal art by artist Colleen Deery.
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 Eli's Math and Logic Puzzles and Other Interesting Things  Eli Karplus
A mixed bag of problems, some geared toward the 6th grade level, others to challenge college folk, with answers for a few. Three Men in a Hotel/The Missing Dollar; The Boatman Crossing the River with Fox, Chicken, and Cabbage; Benardete's Paradox; The
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 Ellipse and Parabola Formulas (Ask Dr. Math FAQ)  Math Forum
Formulas for finding the area, eccentricity, perimeter of an ellipse; length of a parabolic segment.
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 Ellipsoid, Torus, Spherical Polygon Formulas (Ask Dr. Math FAQ)  Math Forum
Formulas for finding the surface area and/or volume of an ellipsoid, a prolate spheroid, an oblate spheroid, a circular or ring torus, and a spherical polygon.
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 Elliptic Functions and Integrals  MacTutor Math History Archives
Linked essay covering 1655 through 1694, with accompanying description of the subject and 8 references (books/ articles).
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 Elliptic Geometry Drawing Tools  Brad Findell
Elliptic geometry calculations using the disk model. Includes scripts for: Finding the point antipodal to a given point; drawing the circle with given center through a given point; measuring the elliptic angle described by three points; measuring the
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 eloancalculator
Free online calculators for borrowing and refinancing loans (student, personal, and auto), as well as amortization.
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 El Paraíso de las Matemáticas  www.matematicas.net
Una página en castellano que pretende cubrir los múltiples aspectos de las Matemáticas, con apuntes, ejercicios, exámenes, enlaces, diccionario, etc. Orientada a la enseñanza media y superior. In Spanish: a page that
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 El Paraíso de las Matemáticas  Xavier Ribas
Apuntes, ejercicios, exámenes, enlaces, un tema de matemáticas cada quincena, un consultorio, algo de historia, diccionario, etc.
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 El Rincón de la Calculadora Gráfica  Francisco Puerta García; Sociedad Canaria 'Isaac Newton' de Profesores de Matemáticas
Artículos de una sección de la revista NUMEROS, que sirve de foro para que los profesores de matemáticas que utilizan calculadoras gráficas en sus clases puedan intercambiar ideas, consultar dudas y mantener debates sobre los
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 Elsevier Historical Books  Elsevier BV
This video tour of the Elsevier Heritage Collection illuminates the scholarly life of the 17th century, revealing littleknown facts about the House of Elzevier, from which the modern Dutch publisher takes its name. Rare books mentioned include Galileo
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 Elsevier Science
"Information Provider to the World." Elsevier's mission is "to advance science, technology and medical science by fulfilling, on a sound commercial basis, the communication needs specific to the international community of scientists, engineers and associated
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 The Elverson Puzzle Co., Inc.
The creators of Jacob's Revenge, the classic wine bottle puzzle. Elverson Puzzle also makes a Tangram Puzzle, the eleven tiles of which form a 6 inch diameter circle; Farkle, a game played with extra large wooden dice or online, with the dice roller that
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 eMathHelp
View worked solutions to problems, or submit your own to WyzAnt.com tutors. See also eMathHelp's notes on prealgebra, algebra, calculus, differential equations, and more.
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 Emaths
Free resources for maths teachers, organized into courses such as "Investigations / Rich Tasks / Puzzles," schemes of work, grade boundaries for key stages 2 and 3 of the SATs (UK National Curriculum Tests), jokes and funnies, and more. "Very old exam
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 Emaths.Info  Vinod Sebastian
Math tools, formulas, tutorials, videos, tables, and "curios," such as the unusual properties of 153, 1729, and 2519. See in particular Emaths' interactive games, which include the N queens problem, Towers of Hanoi, and partition magic, which finds a
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 Embedded TEX  David McCabe
Mathematics typesetting for Word, Excel, other Microsoft Office programs, or any application that supports ActiveX. Download and install free trials. See also McCabe's tutorial, which explains the Fourier transform and Fourier series.
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 Emergence of Chaos (There is order in chaos)  Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
A demonstration of how chaos emerges following a change in a parameter, with an illustrative Java applet.
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 emergent math  Geoff Krall
"Teaching math is difficult. Teaching math in an interesting, engaging, and effective manner is even more difficult. This blog is dedicated to brainstorming interesting and dynamic math problems and projects," with emphasis on Project/Problem Based Learning
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 Emilio Segrč Visual Archives  American Institute of Physics (AIP)
A collection of some 25,000 historical photographs, slides, lithographs, engravings, and other visual materials, focusing on American physicists and astronomers of the twentieth century, but including many scientists in Europe and elsewhere, in other
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 Employment and Careers (AMS)  American Mathematical Society
The AMS Employment Services section includes an overview, EIMS (Employment Information in the Mathematical Sciences) Employment Listings, a Mathematical Sciences Employment Center, Job Seeker's List, Graduate Student Services, AMS Standard Cover Sheet,
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 Empowering Teachers as Leaders [PDF file]  Paul M. Terry, University of Memphis
This article presents the need for what some view as a rather radical change in educational leadership. An argument for this change is proffered by reviewing the current leadership methodology and, for comparison, empowerment is explored as it relates
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 The EMPower Project  TERC
Extending Mathematical Power: A Math Curriculum for Adults, extends school mathematics reform to currently underserved populations so that they more effectively engage mathematical demands at work, at home as parents and caregivers, in the community,
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 EMTeachline
Commercial software and online demos with thousands of fully explained, stepbystep solutions of equations, inequalities, and more. With interactive teaching algorithms for training problemdrilling skills, testmaking software, and a guide to mathrelated
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 EnableMath  Art Bardige, Enablearning, Inc.
EnableMath helps students learn and understand arithmetic and algebra with Webbased adaptive/mastery practice and visualization of concepts. Free student trial, free for educators.
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 Encouraging Mathematical Thinking, Discourse around a Rich Problem  Math Forum: Bridging Research and Practice Group (BRAP)
This videopaper by the Math Forum's Bridging Research and Practice Group (BRAP) of teacher practitioners and Math Forum Staff opens a conversation around the use of discourse as a basis for encouraging students' mathematical thinking and supporting teachers'
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