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  All Sites - 4625 items found, showing 1801 to 1850

  1. invention at play - Lemelson Center, Smithsonian National Museum of American History
    Rotate and translate the tangram-like pieces of Puzzle Blocks to form the silhouettes shown; arrange the gears, springs, funnels, and other objects of Tinker Ball to divert the falling ball into the target. The Invention at Play exhibition focuses on ...more>>

  2. Inversions: A Catalog of Calligraphic Cartwheels - Scott Kim
    The inversions gallery of Puzzlemaster Scott Kim, whom Isaac Asimov called "The Escher of the Alphabet." An inversion is a word or name written so that it reads in more than one way. Some inversions read upside down, some flip in a mirror. Some read as ...more>>

  3. Investigating LCM and GCF Using Rods - Margo Lynn Mankus
    The objective of the lesson plan Investigating LCM and GCF Using Rods is to look at the Least Common Multiple (LCM) and Greatest Common Factor (GCF) from "hands-on" pattern-building to using set theory. With teachers as the intended audience, the activity ...more>>

  4. Investigating Patterns: Number Patterns Fun with Curves & Topology - Jill Britton
    Annotated list of links within various number pattern, curve, and topology topics. Linked items feature activities for students. Topics include: prime numbers/magic squares, clock or modular arithmetic, the golden ratio, Fibonacci numbers, binary numbers/Pascal's ...more>>

  5. Investigating Patterns: R-U-B-B-E-R Geometry (Topology) - Jill Britton
    Selected web pages for educators, each leading to recreation-oriented learning experiences for middle school students. Topics include: Topology / Anamorphic Art; Jordan Curves / Mazes / Networks / Map Coloring; Math-e-Magic / Mobius Strip; Flexagons.á ...more>>

  6. Investigating Patterns: Symmetry and Tessellations - Jill Britton
    Thirty activities from a variety of Web sites, coordinated with a forthcoming book by Jill Britton for Cuisenaire/Dale Seymour, Exploring Pattern: Symmetry and Tessellations (March 1999). Topics include an introduction to symmetry; symmetry in the alphabet, ...more>>

  7. Investigating Polygons - Margo Lynn Mankus
    The lesson plan for What is the Sum of My Angles? has the objectives of investigating the sum of the measure of the interior angles of a triangle using several methods, and making a mathematical conjecture from observations. The lesson plan for Regular ...more>>

  8. Investigating Tessellations Using Activity Pattern Blocks - Suzanne Alejandre
    A lesson plan with activities for investigating tessellations with pattern blocks, keyed to the NCTM Standards, and student tessellation samples. Links to a Patterns Program in which you can drag an unlimited number of standard pattern block shapes into ...more>>

  9. Investigations in Projective Geometry - Dwayne Alvis and Wanda Nabors
    How three-dimensional scenery is reproduced on a two-dimensional piece of paper. Construction exercises and a Geometer's Sketchpad file to download. ...more>>

  10. Investing for Kids - Leung, Ngai, & Mirza, ThinkQuest 1998
    A site designed by kids for kids. It examines stocks, bonds, mutual funds etc. to teach the principles of saving and investing to beginners and seasoned investors, and includes a stock market game for learning how to invest, with concepts of investing ...more>>

  11. Investing in your Future - ThinkQuest 1996
    A searchable site for learning the basics of investing. Four financial calculators are available so investors can see how much different investments will return. Follow additional links to the nation's great financial institutions and other exciting places. ...more>>

  12. Invest Smart - David Leung, George Lee, and Andy Kim
    Learn about the stock market and investment techniques. A Market Simulation lets classes, clubs, or individuals invest an imaginary $100,000 and track the results; includes a separate mutual funds simulation. Site also contains information about saving ...more>>

  13. iPracticeMath
    Type in your responses to iPracticeMath's online multiple-choice questions, and press the orange "submit" button to check your answers: addition, subtraction, multiplication, division, algebra, "word to number" (interpreting written-out quantities), and ...more>>

  14. IQFlash.com - Sergey Melnikov
    Logic and math games include a variation of Nim, Rhumb Line (similar to tic-tac-toe), and Breakfast Brainstorm (rotate the pans in order to make each of the four numbers equal 20 as soon as possible). Strategy articles include games such as tic-tac-toe, ...more>>

  15. Irish Central Statistics Office (CSO)
    Statistical information for the country of Ireland from the government body responsible for compiling Irish official statistics. Tables of important socioeconomic data, press releases and publications (available for download in PDF format), and ordering ...more>>

  16. Irrational Numbers - Jim Loy
    Pythagoras is said to have discovered irrational numbers, showing that the square root of 2 could not be expressed as any whole fraction m/n. Here's the proof... ...more>>

  17. Irregular Tetrahedron Formula (Ask Dr. Math FAQ) - Math Forum
    Formula for finding the volume of an irregular tetrahedron. This will work for a regular tetrahedra also, but a simpler formula is available in that case. ...more>>

  18. Is a Circle a Polygon? - Math Forum, Ask Dr. Math Common Question
    A selection of answers to questions about whether a circle is a polygon, whether it has zero, one, or an infinite number of edges, and more. ...more>>

  19. ISGEm: International Study Group on Ethnomathematics - Ron Eglash
    A group that sponsors programs and business meetings at annual conferences of the National Council of Teachers of Mathematics (NCTM) in the United States, and at the International Congress of Mathematics Education (ICME)."Ethnomathematics" describes the ...more>>

  20. Islands & Divisions of Knowledge (Pattern Based Reason) - Alan Selby
    Not seeing the difference between one and two-way implications is a common source of confusion in reading, writing and mathematics. One-way implication rules can sometimes be put together to get further implication rules. One and two-way implications ...more>>

  21. Is Mathematical Teaching a Function of Time? - Andrej and Elena Cherkaev, eds.
    A page of math humor, including definitions, anecdotes, math education jokes, theorems, puns, limerics, and links. ...more>>

  22. Isn't It a Great Time to Be Alive? - Rex Boggs
    PDFs and Promethean ActivInspire flipchart files which survey the range of digital technology available to assist in the learning and teaching of mathematics. These free downloads accompanied the talk given by the veteran middle school math teacher to ...more>>

  23. I Support the Common Core - McCallum, Bill; and Zimba, Jason
    Blog "for people who want to be active in support of the Common Core State Standards" (CCSS). Posts, which date back to August, 2013, have included "Cathy Kessel critiques the critiques," "A mathematician on the rigor of the Common Core," "The Coming ...more>>

  24. It's Fourth Down and What Does the Bellman Equation Say? A Dynamic-Programming Analysis of Football Strategy - David Romer, Department of Economics, University of California, Berkeley
    PDF download of David Romer's working paper. Reviewing almost 20,000 first quarter plays of National Football League regular season games, Romer analyzed fourth down decision-making and the rarely-questioned consensus that it's better to punt than to ...more>>

  25. I Used To Believe - Mat Connolley
    A collection of childhood beliefs, such as thinking that cats are female dogs, that seeds swallowed will sprout fruit from your ears, and a primal fear of toilets. "Some of the beliefs come from overactive imaginations, but a lot are the result of parental ...more>>

  26. IXL Learning
    IXL provides free online practice, organized by grade levels K-8 and aligned to state standards. Choose one math skill from among the hundreds offered, and submit your answer. Respond incorrectly, and click on the "explanation" button to learn more; get ...more>>

  27. Jaap's Scratch Pad - Jaap Scherphuis
    Java applets, generators, and solutions for sudoku, Rubik's Cube, "moving pieces" puzzles, permutation puzzles, and more, including sphere symmetries, polyform, Towers of Hanoi, and many lesser known puzzles from this collector. Scherphuis' articles range ...more>>

  28. jackmathsolutions.com - Jack Koenka
    Freely download individual chapters of the AP Calculus AB textbook co-authored by Koenka and Roger Allen. Download problem of the week documents, sample test and assignments, notes, worksheets, and other instructional resources. Koenka invites students ...more>>

  29. Jacopo Notarstefano
    Interactive visualizations and puzzles: "Turing's sunflower," which connects leaf arrangements and Fibonacci numbers; "Havel-Hakimi," which presents nodes and their degrees to construct into a graph; "Four-coloring a Dodecahedron"; and a logic puzzle ...more>>

  30. Jaina mathematics - MacTutor Math History Archives
    Linked essay on the period after the founding of Jainism up to around the time of Aryabhata in around 500 A.D., until recently thought to be a time of little mathematical activity in India. (Jainism is a religion and philosophy which was founded in India ...more>>

  31. James P. Dildine - James P. Dildine
    Interactive math lessons for exploring parabolas, triangle areas, Pythagorean triples, triangle angle sums (powered by a Cabri Java applet), cancer and mathematics (image analysis, and determining the area and perimeter of non-regular figures), systems ...more>>

  32. James Poon Online Classroom - James Poon
    Online instructional mathematics videos; a discussion forum; and articles on study skills. ...more>>

  33. Jamit Fractions - JAMIT Software
    Software for learning fractions, for students from 8 years old to adults. Topics are presented in short lessons, each with references, examples, and a practice game that generates problems to be solved. A free version is on the Web; Part One may be purchased ...more>>

  34. JAN (Job Accommodation Network) - President's Committee on Employment of People with Disabilities
    An international toll-free consulting service that provides information about job accommodations and the employability of people with functional limitations. JAN's mission is to assist in the hiring, retraining, retention or advancement of persons with ...more>>

  35. janko.at - Angela and Otto Janko
    Puzzles, games, and Java applets on logic, number, and chess. See also the Jankos' Retrograde Analysis Corner and analyses of legal moves in chess. ...more>>

  36. Japanese Temari - Barb Seuss
    Read about the history of this Asian needlework craft, find free patterns to stitch your own geometric designs on the sphere, browse online galleries of temari, and more. ...more>>

  37. The JASON Project
    A year-round scientific expedition designed to excite and engage students in science and technology, and to motivate and provide professional development for teachers. The project mounts a two-week scientific expedition each year. The team conducts research ...more>>

  38. Java Boutique Educational Applets - internet.com Corp.
    Investigate or download various Java applets, including 3D viewers, calculators, applets to graph functions or data, and simulations, such as the bell curve and fractals. The source code for many applets may also be downloaded; a few applets are shareware ...more>>

  39. Java Components for Mathematics - Hobart and William Smith Colleges
    Configurable mathematical software components written in the Java programming language and meant to be used on instructional Web pages as interactive illustrations, special-purpose calculators, support for exercises, etc. The components in Version 1 are ...more>>

  40. JAVA Gallery of Interactive On-Line Geometry - The Geometry Center
    Applets illustrating geometry concepts. WebEQ, Hyperbolic Triangles, Lorenz Simulation, One-Dimensional Iteration, Tetris, Leap Fractal, Fractals from Iterated Function Systems, Kali: Wallpaper Patterns. Created by The Geometry Center. ...more>>

  41. JavaGSP! - Annie Fetter, the Math Forum
    A short tutorial: everything you need to know to make your first JavaSketchpad page. A quick reference, then some other features, details, and considerations you might want to familiarize yourself with if you choose to incorporate Java GSP into some of ...more>>

  42. Java Projects - John Lindsay Orr; Dept. of Mathematics & Statistics, Univ. of Nebraska-Lincoln
    Grapher is a general purpose function graphing program. ZoomGrapher is a general purpose graphing program, with facility for zooming in on specified points. IntegGrapher demonstrates the definition of the integral in terms of successive approximations ...more>>

  43. Javascript School Math Toolkit - Jeff LeMieux
    JavaScript Pythagorean solver, proportion problem solver, percent proportion problem solver, chord to circumference calculator, denominator to repeating decimal checker, subtraction worksheet generator, addition worksheet generator, multiplication worksheet ...more>>

  44. Jayden's Rescue - Vladimir Tumanov; Scholastic Canada Ltd. (pub)
    A novel whose plot revolves around mathematical puzzles roughly for grades 4-6. The puzzles are in verse, and the solutions are provided following each puzzle. The three child protagonists have to solve these puzzles in order to save an imprisoned queen. ...more>>

  45. J. Digital Tutoring Services - Jason Hankins
    Online tutoring and educational links and DVDs. Live tutoring available in northern Chicago, Illinois/Wisconsin area. ...more>>

  46. Jean Marie Linhart
    Courses taught, outreach activities, teaching statement and philosophy, and more from this Lecturer at the University of Texas at Austin. See, in particular, Linhart's web page on Success at Math, a PDF of her Mathematical Models of a Zombie Outbreak ...more>>

  47. JEST - The Journal of Extraneous Scientific Topics - Russel and Rebecca Carlson
    A newsletter for children: puzzles and an archive of past articles, Ask Dr. Iva (how does a banana work?), and the Homepage of Quadrant NQ. ...more>>

  48. J. Frederic Teubner, The Toymakers of JTEU - J. Frederic Teubner
    See, in particular, the ReutĚReut 12x12 Transmagic Square. Also board, card, and dice games, magnets, t-shirts, books and tapes, coloring books, an art gallery, and a millennium 2000 computer art calendar. ...more>>

  49. Jim Loy's Gambling Page - Jim Loy
    This is a set of short articles about the risk of gambling, your probability of going bankrupt, and pyramid schemes. ...more>>

  50. Jim Loy's Logic Page - Jim Loy
    This is a group of logic puzzles and musings upon self-referential statements and the value of logic. ...more>>


 
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