 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 Segrè 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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 Encarta Online  Microsoft Corporation
Browse or search for math lessons and activities for K12 students and teachers, from problem solving to probability and more.
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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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 Encyclopaedia of Tuning  Joseph L. Monzo
A dictionary of terminology, often involving math, that is used by musicians and mathematicians to discuss tuning theory.
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 Encyclopedia of Dynamical Systems  Eugene M. Izhikevich, EditorinChief
Scholarpedia is a free, anonymously peer reviewed encyclopedia whose invited or elected scholars write articles controlled by curators responsible for their contents. Scholarpedia's encyclopedia of dynamical systems features mathematical topics such as
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 Encyclopedia of Informal Education  Infed.org
Explores key ideas, practices and thinkers in informal education, lifelong learning and social action. Includes opinion pieces, event listings, support, and other resources. Infed.org is an independent and notforprofit site created by a small group
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 Encyclopedia of the Infinite  Johann Christian Lotter
The encyclopedia of infinity consists of concise and sometimes opinionated articles covering all aspects of infinity in science, mathematics, philosophy, and religion.
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 Encyclopedia of Triangle Centers  Clark Kimberling
A searchable catalogue of hundreds of special triangle points (centroid, incenter, Hofstadter points, Yff centers, Apollonius point, etc.), with a glossary, collinearities, graphics, and links to biographical sketches of geometers, geometry software and
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 The Endeavour  John D. Cook
Cook's blog posts, which date back to January, 2008, have included "A Ramanujan series for calculating pi," "Limerick primes," "Twin prime conjecture and the Pentium division bug," "Three surprises with the trapezoid rule," "Where to wait for an elevator,"
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 Engauge Digitizer  Mark Mitchell
Software that takes a digital graph or map, and converts it into numbers. Engauge Digitizer automatically traces curves of line plots and matches points of point plots; handles cartesian, polar, linear and logarithmic graphs; supports draganddrop and
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 Engineering Formulas  eFunda
Formulas, derivations, diagrams, and online calculators. Fluid mechanics topics include the NavierStokes equation, the Bernoulli equation, Reynold's number, pipe friction, manometer, and Venturi flowrate. Mechanics and materials topics: stress/strain,
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 Engineering Mathematics  eFunda
Illustrated by Wolfram Research's Mathematica and organized into arithmetic, geometry, calculus, differential equations, series, elementary functions, special functions, orthogonal polynomials, transforms, numerical methods, statisstics and probability.
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 Engineers Edge
Formulas, design guide, and online calculators. Design and engineering topics include Reynold's number, pipe friction, mechanical tolerances, beam bending, springs, thread stress area, strain gauge application, plastic snap fit application, pressure vessel
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 Engines for Education  Roger Schank, Institute for the Learning Sciences (ILS)
A "hyperbook" written by Roger Schank, Director of ILS, and Chip Cleary, a graduate student, about what's wrong with the education system, how to reform it, and the role of educational technology in that reform. CDROM version and hardcover and softcover
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 English Attack on the Longitude Problem  MacTutor Math History Archives
Linked essay covering the period from the mid17th through the mid18th century, with 9 references (books/articles).
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 The English Name of a Number  Landon Curt Noll
This program will help people obtain the names of very large numbers. You may enter a number or the power of ten you want. It will give you the name, or the digits, of your number in American or English style.
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 Enigmalia. El país de los enigmas
In Spanish or Catalan: Web donde podrás resolver cada semana un nuevo problema matemático/lógico. Estos problemas versarán sobre los enigmalianos, habitantes de un país donde el motor que todo lo mueve es la curiosidad por los enigmas. La publicación
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 The Enigma Machine  Russell Schwager
This Java applet simulates the operation of an Enigma machine, based on the one used by the Germans in World War II to encrypt military messages. With information on the history and workings of the mechanical Enigma machine; a brief description of how
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 Enigmatum, Centre des Énigmes
In French: A tous ceux qui aiment se creuser la tête, de nombreuses énigmes classées
par thèmes: logique, mathématiques, paradoxes etc.. Toutes les énigmes sont
accompagnées de leurs solutions. Des plus petits au plus grands venez
travailler votre
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 Enlaces en español para la matemática / Spanish language math resources  Math Forum
Mathematics and math education resources available online in Spanish, collected by the Math Forum. Categories: Juegos de ingenio/Problems and Puzzles (Brainteasers, games, and competitions); Lecciones y actividades/Lessons and activities (Lesson plans
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 The eNLVM Project: Promoting Student Achievement in Mathematics through Educator Collaboration [PDF]  Pam Buffington, Burt Granofsky, eNLVM Project
This article explores the use of the eNLVM from the perspectives of Curriculum Developer, Math Content Expert, Special Education Professional, and Classroom Teacher. The article paints a picture of how multiple educators can collaborate to use the eNLVM
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 Ensuring Equity and Excellence in Mathematics (NCREL)  Claudette Rasmussen; Pathways to School Improvement
Critical issues in mathematics. Educators and community members are beginning to recognize that most students, including a disproportionate number of women, minorities, and the poor, leave school without the mathematical skills they need to thrive in
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 Entersoft
Instructional videos and slides for sale: Central Board of Secondary Education (CBSE) 10th maths, Vedic mathematics, and more.
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 Entropia.com
The Global Internet Community for Science and Mathematics Distributed Research Computing, Entropia.com is a community dedicated to performing real research on a massive scale using ordinary home and office computers connected through the Internet. Entropia.org's
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 EnviroNET  Space Environment Information  Messore and Chrissotimos; Goddard Space Flight Center
An online service for the space environment community in support of NASA's engineering and scientific goals, providing models and information on the space environment via the Internet. The EnviroNET programming group is staffed entirely by students who
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 eOptimization.com
An informational meeting place for anyone interested in optimization software. Conduct an "application search" to find case studies, press articles, and vendors about the use of optimization in industries ranging from aerospace and apparel to sports and
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 Epistemology and Learning Group  Massachusetts Institute of Technology (MIT)
Constructionism asserts that knowledge is not simply transmitted from teacher to student, but is actively constructed by the mind of the learner, and that learners are particularly likely to create new ideas when they are actively engaged in making external
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 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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 Equalis  Equalis LLC
Register for industrialgrade Scilab support and open source software in Scilab, Octave, Sage and R. Equalis also offers membersonly math blogs, discussion groups, and forums; opportunities to meet and collaborate; a career center for math and "mathcentric"
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 Equalities And Inequalities (SMILE)  Perry Lemon, Shoop School
A lesson designed to involve students in discovery; to teach partitioning and equivalency; and to teach the order of fractions. From the Algebra and Trigonometry section of a collection of almost 200 single concept lessons by the Science and Mathematics
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 Equality and Education  The Century Foundation
Links to information examining causes and effects of economic inequality and exploring policy options for redressing such problems as home inequity, summer schooling, integration, educational choice, and others. Topics: Classroom Inequality, School Choice,
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 Equals and Family Math  Franco, Kreinberg; Lawrence Hall of Science, Univ. of California at Berkeley
EQUALS programs provide workshops and curriculum materials in mathematics for teachers, parents, and community members, working to increase access and equity in mathematics for students in traditionally underrepresented groups. There are over forty EQUALS
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 The Equal Tempered Scale and Some Peculiarities of Piano Tuning  Jim Campbell
An article on tuning applications from the Precision Strobe Tuners site. The Phenomena of Sound and the Harmonic Series, with information about Fourier analysis; Beats; The Physics of Ringing Strings; The Evolution of the Equal Tempered Scale; Piano Tuning;
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 Equate: The Equation Thinking Game  Conceptual Math Media, Inc.
Have fun creating equations crosswordstyle. An arithmetic version of Scrabble, Equate is a math board game for family and classroom. Earn higher scores by using division or fraction tiles, or by playing tiles on premium board positions that double or
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 Equation Search  Octahedron, LLC
Browse common equations in algebra, geometry, trigonometry, calculus, probability, and finance; or perform keyword searches by equation name, variable name, constant name, and category.
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 EquationSheet.com  E. Brian Welch
A searchable database of equations, constants, symbols, and units. Equations listings include Latex code and MathType 5.0 Copy/Paste. Symbols listings include HTML code equivalents. Registered users may store equations, constants, symbols, and units of
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 Equation Solver  Alexey V.Voronin
Midlet "Equation Solver" is a mobile phone app intended to solve systems of linear algebraic equations with real coefficients of the second and third order (with two and three unknowns). System Requirements:
Mobile phone should have a color screen and
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 EquationSolver  Patrick McMordie
Online equation solver. In “real mode”, ES will solve a huge variety of equations in x (single real variable)  for example those involving polynomial functions of unlimited degree, logarithmic, trigonometric, ... . It’ll solve systems of linear simultaneous
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 Equations with Roots 2 and 5  Jim Wilson; Dept. of Mathematics Education, Univ. of Georgia
A Pedagogical Exploration with a Relation Grapher. This paper examines sets of equations that have graphs crossing the xaxis only at 2 and 5.
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 Equipalindromic Numbers  Len Smiley
A description of the expansion of square root of natural numbers into continued fractions, and the strings of palindromes that can emerge from them. With a table of the first 100 natural numbers and their equipalindromic quadratic polynomials.
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