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  All Sites - 420 items found, showing 51 to 100

  1. Cryptoclub - Vera Pless, Janet Beissinger
    This website includes tools to encrypt and decrypt messages, an animated treasure hunt, a classroom message board to send and receive encrypted messages, and a place to explore mathematics topics related to cryptography, such as prime numbers and ...more>>

  2. CTAP Middle School Math Project - CTAP Region IV
    A database of online technology resources supporting California middle school math content standards for grades 6, 7, and algebra. Designed for use in classroom instruction or as homework helpers for students, the matrices resources align to state standards ...more>>

  3. Cubes of Perfection - Ivars Peterson (MathTrek)
    ...Six is the smallest perfect number. Twenty-eight comes next. Its proper divisors are 1, 2, 4, 7, and 14, and the sum of those divisors is 28. Incidentally, if the sum works out to be less than the number itself, the number is said to be defective ...more>>

  4. Curmudgeon
    Blog by a veteran math teacher in Vermont who "believes that math should be taught, not collaboratively explored; algebra and geometry are better than a vague course of Integrated Math; spiraling doesn't work nearly as well as learning it properly the ...more>>

  5. DapJ Music
    Rap music for adolescents struggling to learn and retain math concepts: "Fractions Are Division Problems"; "Keep, Change, Change"; "Properties"; "First, Outer, Inner Last"; and more. The educationally based music production company provides Common Core ...more>>

  6. Database of Number Correlations - James Barton
    Partitionings, prime factorizations, polygonal numbers, and other data about each of the numbers one through one thousand, as well as connections to "various material and occult phenomena." See also Barton's magic square that has interesting prime factor ...more>>

  7. David's Math Pages - David E. Dirkse
    Freeware includes Graphics-Explorer (plotting equations, curve fitting, differentiate, integrate, use constants a,b,c changable at mouseclick, graphics adjust...), linEq (solve systems of lin. equations and watch Gauss-Jordan elimination step by step...), ...more>>

  8. The Definitive Four Fours Answer Key - David A. Wheeler
    From 0 up to 40,000, whole number mathematical expressions that use only common mathematical symbols and exactly four 4s. Wheeler offers his solutions in three different formats: an abbreviated list of answers; a text file of results, mathematical expressions, ...more>>

  9. Derek's Daily Math - Derek Orr
    "Every Number Has a Story to Tell." This blog by an undergraduate at the University of Pittsburgh details number theoretic properties for every day of the calendar year. Orr, a physics and math major, also maintains a list of "Interesting Propositions/Theorems ...more>>

  10. Didax Educational Resources
    Didax publishes and distributes books, manipulatives, and software for math, reading, science, and art. The site offers free demo software, product descriptions, information requests, technical support, and current national educational standards. Didax ...more>>

  11. A Different Kind of Multiplication - David P. Stern
    Roman numerals were an improvement on older notation and useful for the abacus, but seemingly impractical for multiplication. Yet a multiplication method was developed, and is described here. The Romans did not understand why it worked, but we now realize ...more>>

  12. Different Ways to Represent Numbers - Chad Lake
    Online paper that discusses and illustrates counting in bases other than 10; converting to decimal; the Snake Algorithm (the algorithm, summary of binary-to-decimal Snake Algorithm, decimal-to-binary Snake, extending the Snake to other bases, and summary ...more>>

  13. Digi-Block - Digi-Block, LLC
    Manipulatives for K-4 classrooms. Students pack individual blocks into holders to create larger blocks of 10, 100, and 1,000, exploring place value and operations and learning the base 10 number system visually and physically. ...more>>

  14. Digital Math - Santa Barbara County Education Office
    A site to assist Algebra I, Grade 7, and Grade 6 students, their parents, and educators with the California State Mathematics Content Standards. Log in for Quicktime that provides step-by-step instruction to solve problems aligned with the mathematics ...more>>

  15. Don't Hate No Math - Elio Motella
    Advice for students, parents, and teachers. The document called "Lecture" includes sections such as "The causes of your troubles," "It's called metacognition," and "Mental models and propositional representations"; see in particular Part D, titled "An ...more>>

  16. Dositey.com - Dositey Corporation
    Interactive lessons, exercises and worksheets, educational games, open-ended questions in Math and Language Arts, and more. ...more>>

  17. Dr. Alfred Posamentier - Education Update, Inc.
    Blog by the Dean of Education at Mercy College (New York). Posamentier's Posts, which date back to August, 2010, have included "A Power Loop," "The Unusual Number Nine," "The Irrepressible Number 1," "Enriching Mathematics Instruction, Rather than Teaching ...more>>

  18. DreamBox - DreamBox Learning, Inc.
    Online, standards-based math adventure games for individualized learning in kindergarten, 1st grade, and 2nd grade. See-a-lesson and register a trial account. The site also offers parents free "printables," tips, research articles, and other downloads, ...more>>

  19. Dr. Freemath - Bob Pawloski, Office of Internet Studies, University of Nebraska - Omaha
    Archives of a project where elementary classes asked mathematics questions of the Omaha Free-Net, Project TEAM Internet (UNO), and the Technology Task Force of the Eastern Region Math and Science Coalition. Questions and answers range from "At the speed ...more>>

  20. The Drills To Play - Cut the Knot!, Alexander Bogomolny
    An exploration of a detail found at the beginning of Kurt Godel's biography by John Dawson, how repetition and practice constitute an integral and necessary part of the learning process; that, by implication, one first conceives an idea, then proves it ...more>>

  21. Earth/matriX: Science in Ancient Artwork & cience Today - Charles William Johnson González-Casanova
    Analyses of ancient reckoning, a summation of Fermat's Last Theorem through simple addition and last-digit patterns, the Anti-Radian, ancient Pi, an alternative proof of the Pythagorean Theorem to the power of three, the ancient mediatio/duplatio ...more>>

  22. 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>>

  23. 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>>

  24. Egyptian Number Translation - Poseidon Software and Invention
    A calculator that takes a decimal number and translates it into Egyptian hieroglyphs. ...more>>

  25. 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>>

  26. 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>>

  27. Elementary Thoughts: A Collection of Gail's Responses - Gail Englert
    A collection of Gail Englert's responses to questions from elementary and middle school teachers, parents, and students, in the Teacher2Teacher service. Covers a wide range of elementary mathematics topics, as well as teaching points. ...more>>

  28. 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>>

  29. Encarta Online - Microsoft Corporation
    Browse or search for math lessons and activities for K-12 students and teachers, from problem solving to probability and more. ...more>>

  30. English-Spanish Numbers - EnchantedLearning.com
    Read words and pronunciation guides for the numbers zero (cero) through twelve (doce). Link to a number matching quiz printout or a number writing printout. ...more>>

  31. 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 ...more>>

  32. Eugenia Cheng
    Research as well as "things for non-specialists" by a mathematician "keen to bring mathematics to a wider audience and help reduce maths phobia." Articles by the author of Higher-Dimensional Categories: An Illustrated Guide Book and Cakes, Custard and ...more>>

  33. 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>>

  34. Everything Is Mathematical - RBA Contenidos Editoriales y Audiovisuales S.A.
    Based on the series of books, published weekly in association with The Times and presented by Marcus du Sautoy, which aims to demonstrate clearly how mathematics shapes the world around us. Blog posts, which date back to September, 2012, have included ...more>>

  35. Evolution of Arabic (Roman) Numerals from India - B. B. Vishnu
    A description of the development of our number signs, from India throughout the rest of the world, with highlights of how mathematics was helped and hindered by concepts of numbers. From Mathematics and the Spiritual Dimension. ...more>>

  36. 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>>

  37. Explore Patterns in Pascal's Triangle - Jeremy Baer
    In 1653, a French mathematician named Blaise Pascal described a triangular arrangement of numbers corresponding to the probabilities involved in flipping coins, or the number of ways to choose n objects from a group of m indistinguishable objects. It ...more>>

  38. Eye Opener Series - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
    A collection of Java applets that illustrate and thus help to solve or prove various math problems: Euclid's Proof of the Pythagorean Theorem; Construction problem; Disappearing Lines puzzle; Sam Loyd's fifteen; Sliders puzzle; Lucky 7 puzzle; Happy 8 ...more>>

  39. 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>>

  40. The Factor Game (i-Math Investigations) - Illuminations; National Council of Teachers of Mathematics (NCTM)
    An online, interactive, multimedia math investigation. The Factor Game engages students in a friendly contest in which winning strategies involve distinguishing between numbers with many factors and numbers with few factors. Students are then guided through ...more>>

  41. Factors (SMILE) - Edwina R. Justice, Gunsaulus Scholastic Academy
    A lesson for grades 5-7 designed to teach students to find and record groups formed by using pennies; define factor, product, prime, and composite; write related number sentences; find the factors of whole numbers; classify numbers as prime or composite; ...more>>

  42. Famous Equations and Inequalities - Peter Alfeld, University of Utah
    An idiosyncratic and personal selection of particularly important or particularly intriguing mathematical equations, not all of them complicated. Mathematical Constants; The definition of Pi; The definition of e; A differential equation; The Pythagorean ...more>>

  43. The Famous Wonders of the Mind / Les Merveilles de l'Esprit - Nan Zhu, Yifei Zhu - ThinkQuest '99
    Math and science stories teach students some famous tricks and formulae through history, games, and short essays on the golden section, the Fibonacci sequence, Pascal's triangle, logarithms, the Bridges of Konisberg, the binary system, etc. In English ...more>>

  44. Fibonacci at Random - Ivars Peterson - Science News Online
    In a book completed in 1202, mathematician Leonardo of Pisa (also known as Fibonacci) posed the following problem: How many pairs of rabbits will be produced in a year, beginning with a single pair, if every month each pair bears a new pair that becomes ...more>>

  45. First Curriculum - Patricia Simis Lundy
    A first grade early literacy curriculum. In the Discovery Zone introduces the scientific method; Weather or Not uses grids, mapping, measurement, and number sense; see Our Big Backyard, showing the integration in the various lessons of literature and ...more>>

  46. Flash Games - ATK Solutions, Inc.
    Flash applets and games include rotating 3d cube; mind boggle square, which challenges you to slide a square across a surface by sliding other quadrilaterals into the unoccupied spaces; Futoshiki, which involves positioning counting numbers on a grid ...more>>

  47. Focus on Student Practice - Suzanne Alejandre
    Article about how students worked on the Problem of the Week (PoW) "Wooden Legs" in a way that developed the Common Core State Standards (CCSS) Mathematical Practice of "making sense of problems and persevering in solving them." This article, originally ...more>>

  48. Franklin's Mathematics - Paul C. Pasles, Villanova University
    From the author of Benjamin Franklin's Numbers: articles on the founding father's "little-known role as a mathematician," and examples of Franklin's magic squares and magic circle. ...more>>

  49. Free Math Tutoring - Doug Simms
    Online instructional videos, many accompanied by example and exercise sheets. Use of the site is free. ...more>>

  50. Free Puzzles - Jimmie Dean
    A collection of puzzles and brainteasers, divided into geometry, logic, math, weight, moves, and miscellaneous. Each puzzle includes a hint, and solutions are available through e-mail. Online games and puzzles include a chess knight game and Hangman. ...more>>


 
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