 The Ignite Show  Georgia Public Broadcasting
TV shows and blog that "raise respect and awareness of educators and education through the voices of teachers, parents and students" in studentcentered classrooms. Half hourlong videos that feature math teachers include episodes starring 2008 California
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 iKodeko  iKodeko Software, Inc.
Free online math quizzes cover least common multiple (LCM), Roman numerals conversion, number to words, and algebra word problems. Review performance, and participate in discussions around individual test items. Download the iKodeko Worksheet Maker freeware
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 Illuminations  National Council of Teachers of Mathematics (NCTM)
Interactive resources for students and teachers based on NCTM's Principles and Standards for School Mathematics. The site is divided by grade band (PreK2, 35, 68, 912, and a crossband section). Each band contains the following topics: iMath Investigationsinteractive
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 The Illustrative Mathematics Project
Providing guidance to states, assessment consortia, testing companies, and curriculum developers by illustrating the range and types of mathematical work that students will experience with the Common Core State Standards, and by publishing other tools
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 I Love Calculus  Cynthia Lanius
"It's hot and it's fun and it's a challenge." A list of good beginning Web links for calculus.
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 ILoveMath.org  Shelli Temple
ILoveMath.org is a comprehensive site for middle and high school math teachers full of "readytouse" lesson plans, worksheets, activities, and more. The site also features an active message board for math teachers to collaborate.
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 Images and Mathematics (Mathematics Archives)  University of Tennessee, Knoxville (UTK)
A large collection of images based on or related to mathematical principles, many purely mathematical abstractions, such as fractals; others of natural objects whose shape is explained by equations and mathematical models (for example, a drum vibrating).
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 Images Created by Man & Chaos  Alan Beck
Some personal observations on fractal art and artists. "...the fractal artist does not create but explores, does not manufacture but discovers. Instead of being repelled by computers, such adventurers revel in them, as European mariners of old rejoiced
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 Images des Mathématiques  Fabrice Planchon, EditorinChief
Des articles sur la recherche mathématique contemporaine — en particulier, française — et le métier de mathématicien. Hébergé par le Centre National de la Recherche Scientifique (CNRS).
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 Images of Mathematicians on Postage Stamps  Jeff Miller, Gulf High School, New Port Richey, FL
An alphabetical list of mathematicians whose images appear on postage stamps (Abel, Archimedes, Cauchy, Descartes, Euler, Galois, Gauss, Kovalevskaya, Laplace, Leibniz, Newton, Pascal, Poincaré, Ramanujan, and more), with countries, dates of issuance,
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 IMAGINARY  Mathematisches Forschungsinstitut Oberwolfach
A platform for open and interactive mathematics. Explore events, exhibitions, programs, galleries, handson, and films  and share your own activities, projects, and discussions. Started as a maths and arts exhibition for the German Year of Mathematics
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 Imaginary Numbers  Math Forum, Ask Dr. Math FAQ
What is an imaginary number? What is i?
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 Imagine the Universe  HighEnergy Astrophysics Learning Center
A site, primarily but not exclusively for ages 14 and up, dedicated to a discussion about our universe: what we know about it, how it is evolving, the kinds of objects and phenomena it contains, how scientists know what they know, what mysteries remain,
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 Imaging Raytracer  Paul Flavin
A raytracing applet with which you can generate the six quadric surfaces  sphere (ellipsoid), cone, hyperboloid of one and two surfaces, paraboloid, hyperboloic paraboloid  and the cylinder.
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 Imaging the Imagined  Paul Flavin
Modeling with Math and a Keyboard: the art and science of modeling; the math, theory and practice of rendering, imaging, and animation. An introduction to raytracing and the Quadric surfaces; Platonic Solids and Polyhedra; 'Tensegrity' (tension) structures;
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 Imagiware
A commercial site that including several games. A Java triangle puzzle; Web Puzzler lets you unscramble an image; MasterWeb is like the board game MasterMind; "Nowwwhere" is a Webaccessible virtual world; and there is a version of Mancala, too.
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 iMath
A free mathenhanced Web browser/editor supported by a net service to enable
the sending, receiving, storing, publishing, and discussion of pages with
math notation.
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 IMATH  Cathleen V. Sanders
A professional development course for teachers designed to help them integrate technology and the NCTM Standards into their teaching. Although this course is only available for credit to Hawaii teachers, teachers from other states may participate in the
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 iMath Learning  Active Maths, Inc.
Mathematical activities for kids aged 7 to 16. For individuals, small groups or with the whole class using a projector or interactive smartboard.
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 The Impact of the Math Forum's Problem(s) of the Week on Students' Mathematical Thinking  K. Ann Renninger, Laura Farra, and Claire FeldmanRiordan
Article in PDF format. Presented at the International Conference of the Learning Sciences 2000.
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 Implementing Curriculum, Instruction and Assessment Standards in Mathematics (NCREL)  Cathy Cook; Pathways to School Improvement
From Critical issues in mathematics. National educational standards are being developed in nearly all subject areas. The National Council of Teachers of Mathematics has recently developed standards for mathematics; its Curriculum and Evaluation Standards
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 Implications Rules  Alan Selby
Implication Rules: two puzzles that show the difference between one and twoway implication rules. Mastering the difference is a simple, first step, in rule and patternbased thought, needed to precisely read rules, definitions and statements in all
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 Impossible Constructions  Math Forum, Ask Dr. Math FAQ
Problems from antiquity: trisecting an angle, squaring the circle, duplicating (or doubling) the cube.
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 IMPS  Education Development Center, Inc.
Illustrations that model implementation of the Common Core State Standards (CCSS) for Mathematical Practice (MPs) and connect them to the content standards. Centered on student dialogues, each of EDC's eight Implementing the Mathematical Practice Standards
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 Inclusion in Mathematics Education for Students with Disabilities
Presents facilitative strategies for math education for students with disabilities, especially AD/HD and learning disabilities. Most grade levels are appropriate for strategy applications.
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 Indian Math Online  Indian Math Online, LLC
A webbased learning system developed with principles of mathematics as practiced throughout the Indian education system, including starting early, testing frequently, practicing continuously, building steadily, and involving parents actively. IMO first
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 Indian numerals  MacTutor Math History Archives
Linked essay on the method of expressing every possible number using a set of ten symbols (each symbol having a place value and an absolute value), which emerged in India. With references and other related web sites.
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 The Indian Sulbasutras  MacTutor Math History Archives
Linked essay on the Sulbasutras, appendices to the Vedas that contain all that is known of Vedic mathematics, and give rules for constructing altars. (The Vedic people entered India about 1500 BC from the region that today is Iran. The word Vedic describes
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 Individual Differences and the United States Education System  Douglas Trelfa
An overview of ability grouping and tracking in the United States, from The Educational System in the United States: Case Study Findings, March 1999. A discussion of the diversity of beliefs found regarding the question of how to deal effectively and
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 Industry Initiatives for Science and Math Education
Industry Initiatives for Science and Math Education (IISME) seeks to transform teaching and learning through industryeducation partnerships, such as its summer fellowship program. Founded in 1985 by a consortium of San Francisco Bay Area companies in
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 INDY 500  Susan Boone
Students find the mean and median speed for the Indianapolis 500. Rates per lap are calculated, as well as the length of each lap. Students research information and collect data via the Internet.
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 Inequalities and Negative Numbers  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about inequalities and negative numbers, such as why to reverse or flip the inequality symbol when dividing or multiplying by a negative number.
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 Infinite Primes  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about whether there is an infinite number of primes, and the frequency of their distribution.
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 Infinity Calendar  Y. Kirani Singh
This program determines the day of the week given the date of any year, no matter the magnitude, in the Julian or Gregorian calendar.
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 Infinity  MacTutor Math History Archives
Linked essay on the mathematical, philosophical, and religious aspects of infinity. With references and other related web sites.
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 Infinity: You Can't Get There From Here!  B. Sidney Smith; Math Academy Online/Platonic Realms
A "minitext" offering a concise introduction to the concept of infinity. Includes historical background, Cantor's set theory, and an introductory discussion of cardinality, as well as suggested reading.
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 The Inflation Calculator  S. Morgan Friedman
A web form that adjusts any given amount of money for inflation, according to the Consumer Price Index, from 1800 to 2005. Pre1975 data are the Consumer Price Index statistics from Historical Statistics of the United States (USGPO, 1975). All data since
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 InfoMath
Online K12 math, following the premise that learning mathematics the traditional way is more effective than by playing games. Webbased courses: Math Tutor, PreAlgebra Tutor, Algebra Tutor, PreCalculus.
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 Infonation  United Nations Publications
An easytouse, twostep database that allows you to view and compare the most uptodate statistical data for the Member States of the United Nations. In the first menu, you can select up to seven countries; then proceed to the data menu where to select
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 infoplease.com: OnLine Dictionary, Encyclopedia, & Almanac Resource  Information Please
An encyclopedia, dictionary, and a browseable and searchable collection of almanacs in categories: world; sports; entertainment; US; people; business; living; society; science & technology; and many subcategories. Of interest for math is a table showing
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 Information Access Laboratory  Directorate for Education and Human Resources, National Science Foundatation
The Information Access Laboratory is dedicated to encouraging students with disabilities in the sciences by eliminating barriers that hinder their educational pursuits. Students with disabilities are especially underrepresented in the science, engineering,
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 Information on Pentomino Puzzles  Frank Ruskey; Dept. of Computer Science, Univ. of Victoria, B.C., Canada
A pentomino is an arrangement of 5 unit squares (or sometimes cubes) that are joined along their edges. Up to isomorphism (rotating and flipping), there are 12 possible shapes, which are illustrated. Each piece is labelled by the letter that most accurately
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 Information Technology Experiences for Students and Teachers (ITEST)  Education Development Center, Inc.
The ITEST program funds projects that provide opportunities for both schoolage children and teachers to build the skills and knowledge needed to advance their study and to function and contribute in a technologically rich society. The ITEST program also
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 InfoWeb's Teachers Gateway  North Carolina Department of Public Instruction (DPI)
New and important information for teachers; educational research  links to studies, papers and reports about how children learn, effective teaching, etc.; instructional resources on and off the Web; education news; law and policy; award programs; education
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 Innovate  James L. Morrison, EditorinChief
A peerreviewed bimonthly ejournal on research and practice of the use of information technology to enhance education. Innovate invites users to "... do more than simply read. Use our onebutton features to comment on articles, share material with colleagues
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 Innovative Teaching: Math Edition  Walter McKenzie, Creative Classroom Consulting
Math edition of a newsletter recommending links useful to teachers. From November, 1998.
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 Innumeracy
"Gathering examples of innumeracy" taken from the real world. Comment on existing images and anecdotes, or submit your own example. Posts, which date back to a January, 2016, conversation from the Math Educators Stack Exchange, have included "Falling
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 in pursuit of nerdiness
Blog by a middle grades and high school math teacher, formerly in the South Bronx, currently in the Netherlands teaching both within the Dutch national curriculum (in English) and within the International Baccalaureate Middle Years & Diploma Programs.
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 InquiCalc  Donovan Harshbarger
Use InquiCalc's 90 builtin functions to graph up to eight different plots on a single plane, customizing colors and other display parameters along the way. Save output in .BMP, .GIF, .JPG, or .PNG formats; or copy graphs from this graphing calculator
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 inQuiry Almanack  Franklin Institute
A magazine about inquirybased learning. Regular features, a surprise spotlight of the month, favorite sites, the latest in science news, what's new at The Franklin Institute, experiments, and a puzzle. Archives are online beginning in March, 1995.
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