 Interactive Geometry Classroom Resources  CIGS, Math Forum
Links to downloads and classroom resources for dynamic geometry programs: the Geometer's Sketchpad; Cabri Geometry; Cinderellas Café (Java geometry software  German); Dr Geo (multilingual software for IBM PC); Euklid (Windows shareware in German
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 Interactive Learning (Learning and Mathematics)  Brown, et al.; Math Forum
In a chapter entitled "Interactive learning and individual understanding: The case of reading and mathematics" in the 1991 book, Culture, schooling, and psychological development,  Brown, Campione, Reeve, Ferrara & Palincsar discuss learning in which
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 The Interactive Mathematics Classroom  Rex Boggs
A digital library of thirdparty technology resources for teaching mathematics, from kindergarten to calculus. Register to comment on interactive whiteboard files, Powerpoints, TINspire documents, Excel spreadsheets, and other digital resources. RSS
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 InteractiveMathTutor.com  Howard Heller
Fee services include oneonone tutoring, email helper, phone helper, and homework helper. Register for free worksheets and solutions. Math subjects include elementary math, algebra, geometry, trigonometry, integrated math, calculus, statistics, and
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 Interactive Units Converter  Sergey & Anna Gershteins
Measurements available for conversions: weight and mass; distance and length; capacity and volume; area; speed; temperature; time; pressure; energy, work, torque; power; circular measure, and computer storage. With links to other converters.
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 Interdisciplinary Mathematics  Mathematics Education at the Math Forum
The NCTM Standards make a strong case for connecting mathematics with other disciplines, the National Science Foundation (NSF) has funded many projects and curricula with strong interdisciplinary commitments, and mathematicians are more and more seeking
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 The InterFACE: Internet Fractal and Chaos Education  ThinkQuest 1997
Lessons, games, activities, demonstrations, and software, to inform users of the science and mathematics behind fractal images and chaos theory. The lessons, identified by subject and level of difficulty and including quizzes, are designed to promote
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 International Group for the Psychology of Mathematics Education  Psychology of Mathematics Education (PME)
The International Group for the Psychology of Mathematics Education is a group of researchers dedicated to promoting international contacts and the exchange of scientific information in the psychology of mathematics education; promoting and stimulating
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 International Mathematical Virtual Institute  DMBL (Scientific Society of Mathematicians Banja Luka)
The International Mathematical Virtual Institute (IMVI) promotes communication, cooperation and collaboration in the Balkans, elsewhere in Europe, and worldwide on research in (pure and applied) mathematics, history and philosophy of mathematics, and
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 The International Mathematics Teacher and Educator Network
The International Mathematics Teacher and Educator Network (IMTEN) "aims to bring together all those involved in mathematics education across the world.... by hosting and stimulating debates and discusssions, articles and blogs, and being a repository
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 International Salary Income & Expenditure Database  Bernard Parent, World Salaries Group
The International Salary Income & Expenditure Database provides an
international comparison of average salary for various professions and an
international comparison of average personal income & expenditure.
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 International Society for Technology in Education (ISTE)
ISTE promotes appropriate uses of technology to support and improve teaching and learning. The site includes an online bookstore, membership information, publications, conference info, training opportunities/workshops, resources, projects, and bulletins.
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 International Technology Education Association (ITEA)
The professional organization of technology teachers. Its mission is to promote technological literacy by supporting the teaching of technology and strengthening the profession through leadership, professional development, membership services, publications
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 International Telementor Program  Colorado Nonprofit Development Center
Students and mentors from ITP sponsors collaborate in a safe and secure projectbased environment with facilitation from a teacher or parent. Teachers may submit projects throughout the year. Research on the effectiveness of the program and articles about
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 International Unit Conversion Calculator
Comprehensive unit conversion calculator with 20+ categories such as heat and temperature, pressure, volume, area, density, time, speed, velocity, force, angle, power, energy, frequency, computer, electric current, electric capacitance, currency, calendar,
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 International WWW Schools Registry  Stephen E. Collins; Web 66
Global school listings of K12 schools on the WWW, by country and by special categories: Arts; Charter; Gifted&Talented; Handicap; International; Math elementary and secondary schools and educational organizations; Montessori; OnLine; Parochial; Private;
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 Internet Computer Math Resources  Math Forum
Internet resources for integrating computers into the math classroom, one of the Math Forum's series of pages dealing with issues in math education.
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 Internet Educational Workbook (INEW)
Learning by practicing: a hard copy workbook and an online mathematics worksheet database for use both in the classroom and at home, for students in Kindergarten through grade 6. There is also an online version of the worksheets with audio instructions
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 Internet Online Summit: Focus On Children
On December 13, 1997, more than 650 participants representing over 300 organizations came together for the Internet Online Summit: Focus On Children. The Summit addressed ways to assure that steps could be taken to make the Internet online experience
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 The Internet Pizza Server  Susan Boone
A lesson on data collection, unit price, proportions, research, and area of circles. Students create their own pizzas using choices of toppings. They "order" their creations from the Internet and see digitalized versions of their pizzas. They use their
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 Internet Public Library  Mathematics Reference
A listing of sites that provide mathematical resources: the study of the measurement, properties, and relationships of quantities, using numbers and symbols.
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 Internet Resources for Science and Mathematics Education  Tom O'Haver, Maryland Collaborative for Teacher Preparation
A list of online resources for education;
mathematics,
integrated science and mathematics, other sciences, computers and technology, downloadable software, K12 school pages, multicultural connections, subject catalogs and indices, search engines,
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 Internet Use by Teachers  Teaching, Learning, and Computing (TLC)
Teaching, Learning, and Computing has issued its first newsletter report, providing data collected in spring 1998 for a nationally representative sample of more than 2,000 teachers on how they use the Internet  or don't  and what distinguishes users
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 Interventions Portfolio: Math  Peacock, Groenew; School Psychology Project, Univ. of South Dakota, SD
A place to read suggestions by teachers for helping children gain skills and concepts related to mathematics across the grades (Preschool, K2, 35, 68, 912). You may also submit your own successful strategies.
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 invention at play  Lemelson Center, Smithsonian National Museum of American History
Rotate and translate the tangramlike 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
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 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
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 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 "handson" patternbuilding to using set theory. With teachers as the intended audience, the activity
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 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,
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 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
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 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
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 An Investigation of Subtraction Algorithms from the 18th and 19th Centuries  Nicole M. WessmanEnzinger
An exploration of different algorithms used during 18th and 19th century America, with discussion of implications for the modern teacher. This article, which originally appeared in the January 2014 issue of the Mathematical Association of America (MAA)
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 Investigations in Number, Data, and Space (TERC)  Testbed for Collaboration, Eisenhower Regional Consortia
A K5 mathematics curriculum with four major goals: to offer students meaningful mathematical problems; emphasize depth in mathematical thinking rather than superficial exposure to a series of fragmented topics; communicate mathematics content and pedagogy
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 iPracticeMath
Type in your responses to iPracticeMath's online multiplechoice questions, and press the orange "submit" button to check your answers: addition, subtraction, multiplication, division, algebra, "word to number" (interpreting writtenout quantities), and
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 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
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 It's a Small World  Guillermo E. Pedroni, L. D. Brady Elementary School. Aurora, IL
A collaborative learning project combining email penpals with Internet research and bilingual (English/Spanish) writing projects. The site contains a project summary (with assessment rubric and list of standards addressed), scenario, student pages (find
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 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
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 IXL Learning
IXL provides free online practice, organized by grade levels K8 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
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 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
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 JAN (Job Accommodation Network)  President's Committee on Employment of People with Disabilities
An international tollfree 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
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 The JASON Project
A yearround 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 twoweek scientific expedition each year. The team conducts research
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 JAVA Gallery of Interactive OnLine Geometry  The Geometry Center
Applets illustrating geometry concepts. WebEQ, Hyperbolic Triangles, Lorenz Simulation, OneDimensional Iteration, Tetris, Leap Fractal, Fractals from Iterated Function Systems, Kali: Wallpaper Patterns. Created by The Geometry Center.
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 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
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 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.
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 J. Frederic Teubner, The Toymakers of JTEU  J. Frederic Teubner
See, in particular, the Reut·Reut 12x12 Transmagic Square. Also board, card, and dice games, magnets, tshirts, books and tapes, coloring books, an art gallery, and a millennium 2000 computer art calendar.
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 JFundi  Educational Software  Riekie Botha
JFundi offers educational software. Their first product is Times Tables intended to help children memorize the multiplication tables. The Java software runs on multiple platforms.
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 Jiskha Homework Help  Math  Jiskha Homework Help
Submit math questions or answers to this homework help forum. Jiskha archives past math problems and solutions for searching or browsing in reverse chronological order.
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 Job Interview  Math Forum, Teacher2Teacher FAQ
Answers to a frequently asked question: What issues should a teacher think about before a job interview?
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 Jo Boaler
From the author of What's Math Got to Do with It?: How Parents and Teachers Can Help Children Learn to Love Their Least Favorite Subject. Watch a YouTube clip of Boaler teach using Inquiry Based Learning method, or click through her presentation entitled
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 John Mason's Projects  John Mason
Projects by the author of Thinking Mathematically and former director of the Centre for Mathematics Education: Structured Variation Grids and other animations and applets; studies in algebraic thinking; mathematical explorations; MEMEs (Meaning Enquiry
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 Johnnie's Math Page  Johnnie Wilson
A directory of interactive math activities and tools for elementary and middle school children. The site is organized and presented so that children can easily find engaging and worthwhile math activities. The directory is organized by content: number,
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