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  1. 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. ...more>>

  2. Easier Fibonacci puzzles - Ron Knott
    Puzzles that are simply related to the Fibonacci numbers....; Brick Wall patterns; Making a bee-line with Fibonacci numbers; Chairs in a row; Stepping Stones; Fibonacci numbers for a change!; Telephone Trees ; Leonardo's Leaps; Fix or Flip; Two heads ...more>>

  3. 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 ...more>>

  4. 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 exam-style questions and model answers for ages 12-16; book reviews, a Practice Room with practice maths problems and tips for solving them; ...more>>

  5. 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 ...more>>

  6. ECC Tutorial - Certicom
    Elliptic Curve Cryptosystem Classroom introduces elliptic curves and how they are used to create a secure and powerful cryptosystem: elliptic curve groups over real numbers, over Fp, over F2m, and the discrete log problem. Certicom's 109-bit and other ...more>>

  7. 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 ...more>>

  8. 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 ...more>>

  9. Ed Tech Tools - University of Hawaii
    Free, web-based tools for educators, featuring QuizMaker 2.0, which allows users to create and correct on-line quizzes easily and quickly, without any knowledge of HTML. It provides instant feedback to students, and/or package answers in an email that ...more>>

  10. Educational Interests - Keith Lynn
    See, in particular, Lynn's Math Modeling Project, which features Java applets to produce quadratic and sine examples; and Dynamics Project, on the Julia and Mandelbrot sets. ...more>>

  11. Educational Videos and Software for K-12 - Allied Video Corporation
    Educational videos, software, and Web page services. The math series includes The Assistant Professor math videos (Fractions and All Their Parts; All About Angles; What is Area?; What are Variables?; The Pythagorean Theorem; Which Way is Minus?; The World ...more>>

  12. EduGain - Ashish Kumar
    Practice for CBSE, ICSE and math olympiads with this assessment infrastructure, which generates randomized questions of various types -- objective, descriptive, fill in the blanks, matching, and more. Read daily "bytes" and other articles; register to ...more>>

  13. 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 auto-scoring online math quizzes, a discussion forum for teachers, and New York State standards. ...more>>

  14. Edutest: Online Assessment Resource
    Assessment testing based on nationally recognized standards in Math and Language Arts for grades 2-8. Scoring is instant and both parents and teachers can review the tests and the correct answers with their students. The site has some information for ...more>>

  15. Edwards - Clayton Edwards
    Problems, lessons, units, and "starters" by a middle grades math teacher who believes in differentiation and "using a mixture of traditional and reform methods to solidify understanding and engage mathematical minds": integer operations, order of operations, ...more>>

  16. 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 ...more>>

  17. Eggy's School
    A math game for beginning addition: click on the chalk and find the answer to single-digit addition. ...more>>

  18. Egyptian Mathematics - Mark Millmore
    A clearly-written 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. ...more>>

  19. Eighth Grade (AAA Math) - John Banfill
    Interactive math exercises, lessons, and games covering basic arithmetic concepts and methods, for eighth grade. ...more>>

  20. 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 ...more>>

  21. Ejercicios Resueltos de Matematicas - GuiaMath
    Ejercicios Resueltos de Matematicas, Atencion Personalizada Para Estudiantes de Ingenieria y Licenciaturas. Material En formatos Jpg y Videos Mpg, Tratamos todo tipo de Asignaturas de Algebra y Calculo desde Basico a Superior. Logica, Conjuntos, Funciones, ...more>>

  22. 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 ...more>>

  23. 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; Pre-Algebra; Biology, Medicine, ...more>>

  24. The Electronic Encyclopedia of Statistical Exercises and Examples
    Supplementing introductory textbooks, the Electronic Encyclopedia of Statistical Exercises and Examples (EESEE) comprises over 80 "real-world" stories, or examples, about the uses and abuses of statistics and statistical inference, drawn from published ...more>>

  25. Electronic Games for Education in Math and Science (E-GEMS) - British Columbia, Canada
    Archives of a collaborative effort by scientists, educators, and professional video game and educational software developers to do research on and develop teaching materials that integrate video games and computer-based explorations with existing classroom ...more>>

  26. 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 ...more>>

  27. Elementary Math Enrichment - Beth Schaubroeck
    Free mathematics enrichment materials for accelerated 4th and 5th graders. The 70 lessons, grouped into 12 different units, include solutions and teacher guides: Ancient Mathematics (Mayan math, in base 20; and Egyptian math, which lacks zero), Baseball ...more>>

  28. Elementary Math Games - Elementary Math Games
    Free educational math games and printable math worksheets. ...more>>

  29. 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 test-preparation software. ...more>>

  30. Elementary Problem of the Week - Math Forum
    A project designed to challenge elementary students with non-routine problems and to encourage them to verbalize their solutions. From 1995 to 2002, solutions submitted from students for the Elementary Problem of the Week were answered by Visiting Math ...more>>

  31. 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 ...more>>

  32. 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 ...more>>

  33. Ellipsis Math - Dr. Valerie J. Henry
    A curriculum for basic math facts that "incorporates research on best practices from countries around the world as well as cognitive research on memory and retrieval." Sample algebra word "wall cards"; browse and subscribe to the Math Motivator newsletter; ...more>>

  34. 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 ...more>>

  35. 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 ...more>>

  36. eMathHelp
    View worked solutions to problems, or submit your own to WyzAnt.com tutors. See also eMathHelp's notes on pre-algebra, algebra, calculus, differential equations, and more. ...more>>

  37. 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 ...more>>

  38. The EMPower Project - TERC
    Extending Mathematical Power: A Math Curriculum for Adults, extends school mathematics reform to currently under-served populations so that they more effectively engage mathematical demands at work, at home as parents and caregivers, in the community, ...more>>

  39. 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," ...more>>

  40. 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 ...more>>

  41. 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 ...more>>

  42. 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 ...more>>

  43. 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. ...more>>

  44. Erich's Combinatorial Geometry Page - Erich Friedman
    Famous and infamous problems with diagrams and some solutions and proofs. Includes: tree planting problems; circles through points; maximizing squares; triangulating squares; triangulating triangles; lines avoiding squares; lines avoiding points; points ...more>>

  45. Erich's Packing Center - Erich Friedman
    A huge collection of packing problems, each explained with graphics. 2D examples include Triangles in Squares, Circles in Squares, Squares in Squares, Triangles in Triangles, Circles in Triangles, Squares in Triangles, Triangles in Circles, Circles in ...more>>

  46. Erich's Puzzle Palace - Erich Friedman
    Mathematical puzzles, with solutions, in the following categories: mirror puzzles, number puzzles, hex loop puzzles, path puzzles, battleship puzzles, triangulation puzzles, grid puzzles, cris-cross puzzles, weight puzzles, and logic puzzles. In particular, ...more>>

  47. Estimation 180 - Andrew Stadel
    A new estimation challenge every day of the school year, with accompanying video answers. Join the number sense challenge online by submitting your own estimates, explaining your reasoning ("What context clues did you use?") and rating your accuracy ("How ...more>>

  48. e Teaching Assistance Program - eTAP, Inc.
    Lesson plans, examples and exercises, review checks, and other instructional materials, including audio downloads, on the language of mathematics; basic operations; order of operations and combining terms; fractions; multiplying and dividing fractions; ...more>>

  49. Euclid: The Game - Kasper Peulen
    Classic Euclidean constructions using GeoGebra JavaScript. ...more>>

  50. Evolutionary Dynamics - Daniel Rosenbloom
    Problem sets and links to reference books for modeling dynamical systems in evolutionary biology. Course Assistant Rosenbloom's Mathematica tutorials and examples include two HIV scenarios (simple virus dynamics, and virus dynamics for multiple strains) ...more>>

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