 Education News Parents Can Use  U.S. Department of Education
A TV series focusing on schools, learning and the No Child Left Behind Act of 2001. On the third Tuesday of each month during the school year, Education News airs live via satellite, offering parents and anyone else with an interest in education vital
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 Education Trak
Online tutoring, for Explorer on Windows with a highspeed connection. Product description and demo available on site.
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 Educosoft.com  Educosoftregister.com
Online mathematics teaching and learning resource. USAbased portal providing online mathematics tutoring and help for students grade 6 to 12. Aligned with CBSE, ICSE and other state boards. Contains:
electronic lecture notes (ELN) for teachers, online
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 Edusolution.com  Levi Anthony
Edusolution.com's math center provides New York State Regents Math A, Math B, and Math Courses 1, 2, and 3 exams, with answer keys, dating back to 1999; as well as autoscoring online math quizzes, a discussion forum for teachers, and New York State standards.
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 Effortless Algebra  maranGraphics Inc.
Flip and skip through the 305 pages of Effortless Algebra online. Laid out with a "visual grammar," this book covers fractions, exponents, matrices, polynomials, and radicals; solving basic equations, quadratic equations and inequalities; graphing linear
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 Eggbrain Productions  John P. Perna
A Flash website where young people can test themselves on a variety of subjects,
especially mathematics. Interactive quizzes on basic operations, basic algebra, fractions, simple geometry, etc.
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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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 Eggy's School
A math game for beginning addition: click on the chalk and find the answer to singledigit addition.
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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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 Eighth Grade (AAA Math)  John Banfill
Interactive math exercises, lessons, and games covering basic arithmetic concepts and methods, for eighth grade.
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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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 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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 Elementary Math Worksheet Generator  Eduvelop
A web based math generator that creates printer friendly worksheets and worksheets that can be completed online. From Eduvelop, a company that also produces courseware and testpreparation software.
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 Elevated Math  Elevated Lab Press
Instructional math videos, aligned to the Common Core State Standards (CCSS), enlivened with multiple voices as well as graphic and cartoon animation. This iPad app, which includes a whiteboard for working out math problems, comes with two lessons and
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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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 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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 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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 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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 emGames  Wright Group/McGrawHill
Twelve Shockwave games aligned to the Everyday Math curriculum for the early grades. Game topics include the basic operations (including angle addition), place value, money, estimation, factoring, and choosing the larger of two numbers. Many games involve
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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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 Engineering Calculators  Gregory Monachos
Collection of online engineering calculators from Monachos Mechanical Engineering. Unit conversion, voltage drop, pipe friction loss, data
tables and more.
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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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 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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 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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 ENT: A Pseudorandom Number Sequence Test Program  John Walker
A program that performs various tests on a number sequence to analyze its degree of randomness. Download includes the MSDOS file ent.exe, C++ source code, and a Makefile to run ent in Unix. Links to a Java chisquare calculator.
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 EnVision: A tool for live webbased communication in the mathematical sciences  Marco Pollanen
EnVision is a Webbased whiteboardchat program that assists in the live communication of mathematical content. It has been used to conduct online office hours in introductory courses. It allows students to log in anonymously and thus reduce anxieties
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 Equations Calculator
Key in equations up to the third degree, then click the blue "calculate" button for this online calculator to find solutions to the unknowns.
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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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 Eratosthenes' Sieve with JavaScript  H. B. Meyer
An interactive animation with JavaScript of the sieve of Eratosthenes, showsing how the prime numbers <= 400 can be "sieved."
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 Eric's Treasure Trove of Life  Eric Weisstein
A description of John Conway's Game of Life, with a searchable database of definitions and animated examples of possible patterns.
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 Escape Velocity Calculator  Brian Martin
This minimal javascript tool calculates the escape velocity of a body given the body's mass and radius (sample data are provided for the Earth, the Moon, Jupiter, and the Sun).
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 Escher Web Sketch  Wes Hardaker, Gervais Chapuis; Univ. of Lausanne, Switzerland
A Java applet that allows you to draw repeating patterns. With documentation on how to use the applet, a pattern archive, the authors' favorite patterns, a link to download Escher Web Sketch, the program's source code, and interesting crystallographic
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 ESCOT (Educational Software Components of Tomorrow) Problems of the Week  Math Forum
An interactive problem of the week service offered from 1999 until 2001. ESCOT is an NSFfunded research grant that developed interactive Java applets to help middle school learners understand typically difficult math concepts, for example, fractions
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 Esri
Developers of geographic information systems (GIS). Math education books include GIS Tutorial, Fun with Global Positioning Systems (GPS), and the series Our World, which features software, lessons, data, and assessments. ESRI's ArcLessons library freely
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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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 Estimation of Pi (MSTE)  Nicholas Exner; University of Illinois at UrbanaChampaign (UIUC)
A Java applet that estimates the value of pi by firing random data points at a circle inscribed within a square. The probability of a data point landing within the circle is a ratio of the circle's area to the area of the square.
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 The Euclidean Algorithm  David Sumner
Find the greatest common divisor (GCD) online using the Euclidean Algorithm. Enter two numbers, and the JavaScript calculates GCD, least common multiple (LCM), and linear combination; and displays the steps of the algorithm.
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 Euclid's Elements Animated  Mike Markowski
A work in progress: Euclid's "Elements" presented and animated in Java, step by step.
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 Euclid's Elements  David Joyce; Dept. of Mathematics & Computer Science, Clark University
A version of Euclid's Elements created by David Joyce to rekindle an interest in the Elements and to show how java applets can be used to illustrate geometry and to bring the Elements alive. The text of all 13 Books is complete. Joyce writes: "...deductive
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 Euclid: The Game  Kasper Peulen
Classic Euclidean constructions using GeoGebra JavaScript.
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 The Euler Line and the 9point Circle  Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
A geometric explanation of the Euler Line  how complex numbers give us a broader outlook on the geometric configuration  and the 9point circle of a triangle ABC, which passes through the feet of the three altitudes, the midside points of ABC, and the
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 The Euler Line of a Triangle  David Joyce; Dept. of Mathematics & Computer Science, Clark University
A draggable geometry applet illustrating the centroid, circumcircle and circumcenter, and altitudes and orthocenter of a triangle, and the straight line they all lie on, the Euler line.
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 Evalwave.com  Ryan Ingram
Search or browse these lists of the first ten billion prime numbers and the factors of the first one hundred million numbers.
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 Exact Confidence Interval for a Proportion  Michael P. McLaughlin
Online calculator (with descriptive text) to compute a Bayesian credible interval for an observed proportion.
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 ExamHelp  Anamika Sinha
Log in to generate math worksheets to print out or solve online with autoscoring, and to participate in web contests. ExamHelp has also blogged since October, 2010.
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 ExamView Pro  FSCreations, Inc.
A tool that simplifies the process of constructing math equations for tests, with downloads of demos available for Windows and Mac. Includes Internet testing/study guides, a fullfeatured equation editor, and a spellchecker. Tests can be taken on the
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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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 Exercices on Mathematics  Luis Breda
Online math drills in English and Portuguese: lines, fractions, points and vectors, powers and radicals, firstdegree equations, seconddegree functions, trigonometry, circles, and derivatives.
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