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  1. 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>>

  2. Elementary Resources: Math - Iram Khan and James Horner, CanTeach
    CanTeach was created to assist teachers in finding and using resources online. The authors have emphasized lesson plans, resources, and links which have a Canadian focus. The elementary math resources are organized into these categories: numbers, patterns ...more>>

  3. 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>>

  4. Elsevier Historical Books - Elsevier BV
    This video tour of the Elsevier Heritage Collection illuminates the scholarly life of the 17th century, revealing little-known facts about the House of Elzevier, from which the modern Dutch publisher takes its name. Rare books mentioned include Galileo ...more>>

  5. 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>>

  6. 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 ...more>>

  7. 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>>

  8. Entersoft
    Instructional videos and slides for sale: Central Board of Secondary Education (CBSE) 10th maths, Vedic mathematics, and more. ...more>>

  9. 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. ...more>>

  10. EquPlus - Maria Chernenko
    An index of math and science equations, rendered in TeX, MathML, png image files, and MathType. Browse categories such as algebra, calculus, geometry, signal processing, trigonometry, and statistics. See also EquPlus's unit conversions, constants, and ...more>>

  11. Eratosthenes Finds Diameter of Earth! - Mary Kay Hemenway, University of Texas at Austin
    Students learn to estimate the diameter and circumference of the Earth by repeating Eratosthenes' experiment, exchange measured data and results, and use the Internet to research the mathematical and scientific contributions of Eratosthenes. Hemenway ...more>>

  12. Eric Buffington
    YouTube lessons and other educational math videos by a Pennsylvania cyberschool teacher. See, in particular, Buffington's channels on "Math That Makes you Think," "Math in Real life," and episode 1 and episode 2 of "What Kids Say About Math." ...more>>

  13. Escuela Virtual
    From Mexico, a non-profit organization offering a collection of links and documents in Spanish for students and teachers in secondary school. You can also write to someone who can answer your questions about homework or anything about school. Look for ...more>>

  14. 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>>

  15. e to the i pi - Kevin Bertman
    Investigations for teachers to use in mathematics classes. Posts include Phantom Traffic Jams (velocities); Hypotrochoids (Spirographs); Cartograms; Rogue Waves; Fractal Trees; Stereoscopic Images; Six Degrees of Separation; Shoelaces (applying the Pythagorean ...more>>

  16. Euclid and his Elements - Donald Lancon, Jr.; University of Houston
    A paper written for a Survey of Math class at Bellaire High School(Bellaire, Texas): a discussion of what is known about Euclid's life and his works other than the Elements, followed by a systematic study of the Elements, examining its content, structure, ...more>>

  17. Euclide - Patrick Iglesias; Ecole Normale Supérieure de Lyon
    Euclide est un logiciel d'apprentissage de géométrie plane pour Macintosh destiné au collégiens et lycéens, pour aider à comprendre quelques théorèmes de géométrie plane, à ...more>>

  18. The Euclid Project - Dr. Robert E. Mason IV, The Dalton School
    Description of a math program that uses visualization, analysis, informal deduction, and formal deduction to engage students in the study of geometry in an integrated manner. For example, a 7th Grade Geometer's Assignment on circles uses the Geometer's ...more>>

  19. EucliDraw - Kostas Pamfilos, George Nikoloudakis, and Paris Pamfilos
    A program to draw plane Euclidean geometry figures. Features include an extensible toolbox, animations, Euclidean and arbitrary transformations, a catalogue of triangle-center-tools, Scheme-Sockets to combine and generate complicated schemes and fractals, ...more>>

  20. Euclid's Elements Animated - Mike Markowski
    A work in progress: Euclid's "Elements" presented and animated in Java, step by step. ...more>>

  21. Euclid's Geometry: History and Practice - Alex Pearson, The Episcopal Academy, Merion, Pennsylvania
    A series of interdisciplinary lessons on Euclid's Elements, researched and written by a Classicist and hosted by the Math Forum. The material is organized into class work, short historical articles, assignments, essay questions, and a quiz. ...more>>

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

  23. Euklides - Peter Simon
    Dynamic geometry shareware for two-dimensional geometry; besides the basic elements, Euklides supports conics and point tracking (locus, cycloid). The multi-layer capability ensures easy and efficient construction of drawings. The software produces precise ...more>>

  24. Euler and Erdös
    Blog of self-described amateur research in tribute to Leonhard Euler and Paul Erdös, "muses" to an author who considers it "hard to find math blogs aimed at undergraduates." Posts, which date back to May, 2013, have included "Envelopes and Astroids," ...more>>

  25. Everyday Mathematics: A Parent's Handbook K-5 - Oswego School District
    Classroom routines, standards by grade level, examples, glossary, and other resources. Learn about number families, number stories, games such as factor captor, and algorithms such as addition by partial-sums, subtraction by counting-up, left-to-right, ...more>>

  26. ExamHelp - Anamika Sinha
    Log in to generate math worksheets to print out or solve online with auto-scoring, and to participate in web contests. ExamHelp has also blogged since October, 2010. ...more>>

  27. ExcelGrade eLearning
    Online tutoring in math, science, and English, using a proprietary headset and whiteboard. Details, including testimonials and pricing, on the web. ...more>>

  28. Excel Math - AnsMar Publishers, Inc.
    Excel Math is a mathematics curriculum for Kindergarten through Sixth grade students. Students are repeatedly given practice in the use of the concepts, following their introduction, so that they retain them and develop a solid foundation on which to ...more>>

  29. Exclusive Educational Products - Exclusive Educational Products
    Order math resources and manipulatives for the curriculum of Ontario, Canada, as listed by grade or by the strands of number sense, measurement, patterning and algebra, geometry, data management, and assessment. Virtual workshops include samples from ...more>>

  30. Exercices de Géometrie en Troisième - T. Touré
    Révisions de vacances: de nombreux exercices de géométrie. Thalès/Droite des milieux; Pythagore; Sinus, cosinus, et tangente; Cercle et triangle rectangle; Droites remarquables; Distance et aire; Volume; Symétrie, rotation ...more>>

  31. Exercises in Imagination (Geometry and the Imagination) - Conway, Doyle, Gilman, Thurston; The Geometry Center
    How do you imagine geometric figures in your head? Most people talk about their three-dimensional imagination as 'visualization', but that isn't exactly right. A visual image is a kind of picture, and it is really two-dimensional. The image you form in ...more>>

  32. The Exhibitionists - National Museums Liverpool
    The site uses simple examples to give a basic outline of life behind the scenes at the museums, and all the math problems that curators solve as they plan and present exhibitions. The prices and measurements in the puzzles are made up to give viewers ...more>>

  33. Experiencing Geometry in Euclidean, Spherical, and Hyperbolic Spaces - David W. Henderson; Cornell University
    A book that presents a series of problems. Most of the chapters start intuitively and are accessible to a general reader with no particular mathematics background; however, the discussions were written for mathematics majors and mathematics teachers and ...more>>

  34. Exploratorium's Science of Baseball - The Exploratorium
    Interactive (Shockwave) exhibits from San Francisco's science museum include Fastball Reaction Time (can you hit a 90-mph fastball?) and Scientific Slugger (see what makes a home run: vary the angle of the ball, bat speed, and pitch speed, then watch ...more>>

  35. Exploring Advanced Euclidean Geometry with Geometer's Sketchpad - Gerard A. Venema
    A sequence of PDFs that show how to use dynamic visualization software to explore topics in collegiate Euclidean geometry. Each file is 0.2MB or smaller. The complete sequence runs 121 pages, and features a table of contents, bibliography, index, and ...more>>

  36. The Eyeballing Game - Matthias Wandel
    Test your ability to "eye up" geometric figures with this timed Flash challenge. First consult the help documentation to correctly calibrate your monitor resolution and aspect ratio; then click and drag the blue ray or point to accurately construct the ...more>>

  37. EZ Learning Solutions
    EZ Learning Solutions Study Guides are part of a family of study aids designed with a "back-to-basics" approach in mind. They are intended for use by students, parents, or teachers, and should be especially useful for the new math curriculum in Ontario. ...more>>

  38. FactMonster: Math - FactMonster.com; the Learning Network
    Almanac of information on numbers, measurement, tables and formulas, and money; with special features and online games and quizzes. ...more>>

  39. Fascinating Flat Facts about Phi - Ron Knott
    Phi and two-dimensional geometry - constructing the golden section: phi, Phi; Phi and the root-5 rectangle; the shape of a piece of paper; Phi and the pentagon triangles; Penrose tilings; a rectangle/triangle dissection problem; the Golden Spiral; trigonometry ...more>>

  40. Fascinating Folds: Origami
    A premier supplier for Origami and the Paper Arts with books, papers, and related products. Online ordering of supplies is available. Origami and Paper Products for sale include books, papers, videos, CDs, related products (cards, bookmarks, t-shirts), ...more>>

  41. Faster-Than-Light Math!
    Free animated 3D math videos in algebra, geometry, trigonometry, word problems on related rates, and more. Faster-Than-Light (FTL) Math tailors courses or tutoring sequences based on student needs and math skill levels. It guarantees improvements on SAT ...more>>

  42. Fast Facts (Math On Line) - D. Kell; Mercer County Community College
    Link listings for math concepts, from whole numbers and fractions to advanced equations, logic, and probability. ...more>>

  43. A Faulty Dissection - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
    A deceptive dissection implemented in Java. Two different rearrangements of the same four plane pieces result in rectangles of different area. A very entertaining introduction into the subject of Fibonacci numbers. ...more>>

  44. Ferris Wheel - Jim King, University of Washington
    Physical devices can be modeled using dynamic geometry. A vital tool for moving objects around in the model are the isometries, or distance-preserving transformations. This model of a Ferris wheel provides a good example. A step-by-step description of ...more>>

  45. Fibonacci Numbers and the Golden Section - Ron Knott
    Information about the Fibonacci series, including a brief biography of Fibonacci, the numerical properties of the series, and the ways it is manifested in nature. Fibonacci numbers are closely related to the golden ratio (also known as the golden mean, ...more>>

  46. Figure This! Math Challenges for Families - National Council of Teachers of Mathematics (NCTM)
    Elementary-level problems with hints, information about when and why answers matter in the real world, suggestions for getting started, and answers with explanations. A Challenge Index lists problems by topic. Examples include: Line Up! (How long do you ...more>>

  47. Fill-It-In Outline Mathematics - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
    A collection of outline solutions to various problems: word and logic problems, problems from arithmetic, number theory and geometry. Solutions are practically complete with a few essential pieces omitted and to be filled in by the student. ...more>>

  48. Finding Ways to Nguyen Students Over - Fawn Nguyen
    Nguyen blogs mostly about her teaching middle school math. Posts, which date back to November, 2011, have included "Teaching 101 -- How I Got Like This," "Puzzles and Brainteasers, Set 11," "Pi Day Activities," "Always Sometimes Never," "Using Excel for ...more>>

  49. Five Triangles mathematics blog
    This blog, which dates back to April, 2012, posts problems for middle and junior high school students. Topics have ranged from ratios and fractions to area and paths to quadratic equations and linear equations. ...more>>

  50. Five Twelve Thirteen - Dylan Kane
    Blog by an eighth grade math teacher in Boston. Posts, which date back to October, 2012, have included "Assessment & Rigor," "Pythagorean Triples Function," "Construct Viable Arguments and Critique the Reasoning of Others," "Guatemalan Sinkhole," "Problem ...more>>

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