 E and M  Finzer, Berkelman, Bennett; Key Curriculum Press
Two sketches showing how to model force fields. One sketch models a capacitor, and the other shows the strength at various points of the field generated by two charged particles.
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 Earliest Known Uses of Some of the Words of Mathematics  Jeff Miller, Gulf High School, New Port Richey, FL
An extensive list, with examples, sources, and contributors. These pages attempt to show the first uses of various words used in mathematics. Research is ongoing, and the uses cited should not be assumed to be the first uses that occurred unless it is
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 Earliest Uses of Various Mathematical Symbols  Jeff Miller, Gulf High School, New Port Richey, FL
An attempt to identify the individuals who introduced various common mathematical symbols, along with the dates and name of the document in which the symbol first appeared: symbols of operation; grouping symbols; symbols of relation; fractions and decimals;
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 Early Calculators  David G. Hicks
Some history on slide rules and their types and makers, as well as basic instructions on their use. Also Planimeters, Calculating Machines (adding machines, four function mechanical calculators, how calculating machiens worked), and Early Electronic Models.
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 Early Career Profiles: Recent bachelorslevel graduates in the mathematical sciences  American Mathematical Society
A collection of profiles of alumni from a variety US colleges and universities who majored in mathematics. Each profile includes statements of what the alumnus or alumna now does, the math each uses on the job, the recent graduate's educational background,
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 Early History of Mathematics  Project MATHEMATICS!, California Institute of Technology
A 30minute videotape that uses motion, color, music, and images of original documents to outline some of the important developments in the early history of mathematics, from Babylonian calendars on clay tablets produced 5000 years ago, to landmark events
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 Earning 5.5 Percent Interest  NASA Lewis Learning Technologies Project
Mareta put $4,000.00 in a savings account at an annual interest rate of 5.5%. How much interest will the principal earn in 1 year? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test.
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 Earth/matriX: Science in Ancient Artwork & cience Today  Charles William Johnson GonzálezCasanova
Analyses of ancient reckoning, a summation of Fermat's Last Theorem through simple addition and lastdigit patterns, the AntiRadian, ancient Pi, an
alternative proof of the Pythagorean Theorem to the power of three, the
ancient mediatio/duplatio
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 Earthquakes (MSTE)  John Meseke; University of Illinois at UrbanaChampaign (UIUC)
Graphing earthquake data (a dataset and sample graphs are provided) and using the information for decision making.
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 Easier Fibonacci puzzles  Ron Knott
Puzzles that are simply related to the Fibonacci numbers....; Brick Wall patterns; Making a beeline with Fibonacci numbers; Chairs in a row; Stepping Stones; Fibonacci numbers for a change!; Telephone Trees ; Leonardo's Leaps; Fix or Flip; Two heads
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 Easing the Hurry Syndrome  Jennifer Wilson
Blog by a teacher in Flowood (Mississippi) whose course load includes Advanced Placement Calculus and Geometry. Posts often begin with alignments to relevant Common Core State Standard (CCSS) and feature screenshots of TINspire CAS Navigators, with original
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 EASI Street to Science, Engineering, and Math (SEM)
Equal access to software and information: an NSFsponsored project to collect and disseminate information on tools that make these fields more accessible to professionals with disabilities. Online workshops, Webcasts, links to programs for the visually
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 Easy Calci  Manoj Prabhakar
Calculators for linear algebra, statistics, length conversions and other measurements, interest and other financial topics, and more.
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 EasyCalculation.com
Free online mathematics converter, calculators, and other tools for numbers, unit conversions, hexa conversions, decimal conversions, binary conversions, area, trigonometry, analytical geometry, algebra (e.g., group work, Bernoulli inequality, Venn diagrams
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 Easymaths  Echelon Systems Ltd.
A UK math site with GCSE tutorials, notes to be used as introductions to topics or for revision; an Exam Bank with examstyle questions and model answers for ages 1216; book reviews, a Practice Room with practice maths problems and tips for solving them;
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 Easymaths SA  Maggie Verster; Mathematics Web Association of South Africa
A free South African site for teachers, parents, and students, with lessons, tests, articles, worksheets with answers, study skills information, and more.
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 EASYpEXPR: Writing Expressions in Pure HTML  Giovanni Artico
Enter an expression in the textbox, and the page will return the HTML code that would show the expression in standard visual form.
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 Easy Translator  Mapperz
Convert data from AutoCAD (DWG/DXF), CSV, GeoJSON, GML, GPX, DGN (v7), MapInfo (TAB), KML, or ESRI (Shapefile) into WGS84, WGS84 (GeoCentric), Mercator Projection, Robinson Projection, or Spherical Mercator.
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 eCalculus  D. P. Story, Mathematics & Computer Science, Univ. of Akron
A Calculus I tutorial written in TeX and converted to Adobe PDF. Features include verbose discussion of topics; typeset quality mathematics; inline examples and exercises; interactivity in the form of multiple choice questions and quizzes; and popup
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 ecalculus.org: The Calculus Page  Hass, Kouba, University of California, Davis, CA
Resources for calculus students: calculus problems with solutions; sample exams; excerpts from "How to Ace Calculus" (the Streetwise Guide); animations; tips on preparing for exams; mathematics and the job market (professions that use mathematics); and
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 EcEdWeb: Economic Education  Kim Sosin, Univ. of Nebraska at Omaha (UNO)
Teaching resources for economics teachers from K12 to college/university level, plus links to particularly useful sites for economics information and data for teachers and students. Two economics organizations, the National Association of Economic Educators
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 Echecs & Math: Jeux, Exercices et Méthodes  Bernard Faujour
Java et JavaScript pour apprendre la géométrie des tangrams et des polyominoes. Les problèmes incluent questions de logique, et textes et tableaux. Les ressources incluent jeux pour télécharger, et une fabrique d'exercices
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 EconEdLink  National Council on Economic Education
Classroomtested, Internetbased economic lesson materials for K12 teachers and their students. Browse the complete library of online lessons, aligned to Standards of the National Council on Economic Education (NCEE) and organized into macroeconomics
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 Economic Research Service (ERS)  U.S. Department of Agriculture
This agency studies agriculture, food and nutrition, the environment, rural development, and international trade. Research reports, press releases, commodities reports, books, and other publications available online or for download in PDF format, with
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 Economics of Networks Internet Site  Nicholas Economides
A collection of information on economic issues of networks, such as the Internet, telephone and fax communications networks, railroads etc. One of the fundamental features of networks is that the value of a network service increases as the network expands,
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 Ed Dickey's Home Page  Ed Dickey
Syllabi for courses on teaching in middle/high school (mathematics), teaching mathematics with manipulatives (grades 712), graphics calculators in high school mathematics, computers in mathematics education, technology to support instruction, technology
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 EDeafMath  Dawn Kidd
Vlog for anyone who teaches "at least one deaf or hard of hearing student." Posts, which date back to February, 2013, include "Texas Math Sign Language Dictionary" and "50 Plus Ideas for Using Document Cameras in the Classroom." Kidd teaches middle school
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 Ed Laughbaum, Ohio State University
Research papers include Developmental Algebra with Function as the Underlying Theme; Graphing Technology  Tool of Choice for Teaching Developmental Mathematics; Using Data to Promote Mathematical Understanding; Sharp Corners, Rates of Change, Systems
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 EdNext
A utility that allows searches defined by grade level, subject, and specific topic. Select subject: mathematics to search for more than 8,000 math sites.
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 EdPlace Maths  EdPlace
EdPlace Maths is a is a registered Curriculum Online subscription website that offers over 2000 interactive and printable maths worksheets for KS1 through KS4. Free samples available; paid subscriptions allow users to generate new problems for each worksheet
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 EdRes  Educational Resources  Graeme Willoughby
Purchase small Microsoft Excel files containing maths problems and science/technology quizzes. (Demo downloads are available from the site.) Instant feedback for answers stimulates individual learning styles using a familiar delivery medium.
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 eDscape  Computer Curriculum Corporation (CCCnet)
eDscape is CCC's professional development website for educators, with free online courses on using the Web and technology in the classroom, discussions and conferences, partner sites, and online stores (Simon & Schuster). You must register to participate
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 Ed Tech Tools  University of Hawaii
Free, webbased tools for educators, featuring QuizMaker 2.0, which allows users to create and correct online quizzes easily and quickly, without any knowledge of HTML. It provides instant feedback to students, and/or package answers in an email that
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 educ8r.net
A site where teachers can share what they have already developed, with formbased editing tools for creating lesson plans, tests, and lesson packages (groups of lesson plans). Browse or search math resources and other subjects.
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 Educação Matemática e Novas Tecnologias  Gravina, Barreto; Universidade Federal do Rio Grande do Sul (UFRGS)
Discusses new technologies as resources for the learning of Mathematics:
software descriptions, lesson plans, articles. In Portuguese.
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 educating grace
A blog about mathematical thinking, teaching students to think, thinking about teaching students, and ending educational inequity, especially in math. The posts by this former high school math teacher who now develops teacher training date back to August,
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 Educational Aspirations
"Ramblings from a 21st century educator" who specializes in differentiating math and seeks to make the subject "more engaging and relevant to students' lives." Blog posts, which date back to July, 2011, have included "Measuring Student Growth," "Twitter
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 Educational Board Games  EdWeb
"Cardboard Cognition"  an alphabetical list of educational board games, some good for learning or practicing math. This site provides descriptions of each game, including instructional and learner objectives, equipment, rules and more. See also Educational
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 Educational Freeware  Marianne Wartoft
Listings, descriptions and reviews of free educational software for kids and adults. Some of the software is web based (see the online section), and some is Windows software that you can download (see the downloadable section). In order to see what titles
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 The Educational Gaming Environments group (EdGE)  TERC
"At the forefront of the 'Games for Good' and 'Serious Games' movements," this research design and development team investigates gamebased learning environments. Funded in part by the National Science Foundation (NSF), EdGE supports and measures engagement
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 Educational Math Software  Educational Software Directory
An annotated directory of math learning software.
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 Educational Products: Math  IERC: Internet Education Resource Center
Search by grade (PreKAdult) and subject (e.g. math) to browse instructional materials of all kinds.
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 Educational Programs That Work (EPTW): Mathematics  U.S. Dept. of Education
The Catalogue of the National Diffusion Network's descriptions of exemplary educational programs in mathematics. A tabular summary of program services provides an overview of the programs. Individual program descriptions summarize audience, program goals,
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 Educational Resources  Avraham Goldstein
CGI for solving quadratic and cubic equations, performing polynomial division with remainder, finding real and complex roots of cubic equations, and analyzing polynomial functions (determining first and second derivatives, local maxima, minima, inflection
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 Educational Resources for Electronics Technology  ETCAI Products
Download trial software for teaching electricity, trigonometry and
electronics. Qualified teachers can request a free trial CD.
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 Educational Resources Information Center (ERIC)  National Library of Education
A national information system designed to provide users with ready access to an extensive body of educationrelated literature. ERIC Sites links to clearinghouses, support components, and publishers of ERIC material. Special Projects include the Education
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 Educational Standards and Curriculum Frameworks for Technology  Charles Hill; Putnam Valley Schools, New York
An annotated list of Internet sites with K12 educational standards and curriculum frameworks documents, classified by organization, state, and country.
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 Educational Technologies  TECFA, WWW Virtual Library
This site offers a selection of best pages dealing with educational technology; trees of concepts (guided search: educational software, artificial intelligence, constructivist design, virtual reality, distance education, etc.); the opportunity to make
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 Educational Technology Center (ETC)  Harvard Graduate School of Education
The Educational Technology Center was formed in 1983 to explore two hard issues: topics or broad areas of concern for educators deemed difficult for learners; and issues of implementation, broadly conceived. What are the obstacles and sources of support
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 Education.Au Limited  Education Network Australia (EdNA)
Australian author of various publications on: Access and Equity; Adult and Community Education; Communication Technologies; CDROM Technology; Educational Television; Evaluating ComputerBased Education; Home Based Workers; Information Economy; Learning
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