 How to use a Chinese Abacus: A ComputerBased Tutorial  Jan G. Hogle
An abacus helps make abstract math concepts more concrete. This site includes a softwarebased tutorial to illustrate the basic use of an abacus. The tutorial presents a brief introduction; and illustrates, with graphics, text, and animation, how to represent
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 HowTown.com  Lance Pettit
How to do practically everything in 10 steps or less. Submit your own HowTo, read others, or ask a question using the Web form provided.
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 http://innumeracy.net/
"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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 HubbleSite  Space Telescope Science Institute (STScI)
The home on the Web of the Hubble Space Telescope, a NASA Origins mission that seeks answers to fundamental questions about the universe and our place in it. Features include: Newscenter (search, by year or category, an indexed catalog of Hubble pictures,
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 Hufnagel's Software  Hank Hufnagel
Math games that reinforce basic operations and symmetry: Mouse Math, SpiroMath, and SymmeToy.
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 Humanistic Mathematics  Mathematics Education at The Math Forum
The idea that teaching, learning, and creating mathematics issues from the same psyche as literature, aesthetics, and music has attracted, since 1986, a worldwide network of people who share this belief. The existence of the Humanistic Mathematics Network
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 Human Research Program Education and Outreach Project  NASA  Johnson Space Center
This project strives to reach diverse communities, inspire a new generation of scientists and engineers, and encourage future space explorers. Browse all of its programs through the site above. One of the project's areas of focus is to develop supplemental
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 HungHsi Wu's Home Page  HungHsi Wu
Articles on the Common Core Mathematics Standards (CCSS) and math education in general, such as "The impact of Common Core Standards on the mathematics education of teachers," "Bringing the Common Core State Mathematics Standards to Life" (published in
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 Hungry Frog Software  Science Education Software Inc. (SESI)
Educational software for Windows 95/NT and Apple Macintosh  Math, Chemistry 512, Latin/Greek HS & College, and languages, 412 (French, Spanish, Italian, German). All of the Hungry Frog games are based on the same fundamental game scenario: frogs
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 HyperGami and JavaGami  Ann & Mike Eisenberg; Inst. of Cognitive Science, Univ. of Colorado, Boulder
HyperGami and JavaGami are software environments for designing and building paper sculpture. Choose from a number of starting polyhedra, which appear in a 3D window alongside a corresponding "folding net" in a 2D window. Employ both builtin features
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 IAEPedia  Information Age Education (IAE); The Science Factory
IAE, founded by Dave Moursund, is a nonprofit organization that provides free materials for preservice and inservice teachers. It focuses on improving education at all levels and throughout the world. The IAEPedia is a wiki page about its educational
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 Ian's Proof that Infinity = 1  Don Cohen (The Mathman)
Young children try writing the sum of an infinite series as a fraction. What's wrong with Ian's argument? Newton and Euler and those other mathematicians had made similar mistakes with infinite series! The problem is that the infinite series converges
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 ICME10 Denmark
The 10th International Congress on Mathematical Education will be held in Copenhagen, Denmark, July 411, 2004. The aim is to show what is happening in mathematics education worldwide, in terms of research as well as teaching practices; exchange information
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 iCoachMath.com  HighPoints Learning, Inc.
iCoachMath.com coaches students online; and provides teachers with student performance reports, customized test papers, and math resources such as lesson plans aligned to state and national standards. The site freely offers an illustrated dictionary of
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 ICTMT  3: Technology in Mathematics Teaching  University of Koblenz
The Third International Conference on Technology in Mathematics Teaching. Abstracts and papers in English and German; workshops; posters. Sample subjects: Math with calculators in elementary schools; Using the TI 92 in an introductory number theory course;
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 Ideas, Concepts, and Definitions (MegaMath)  Nancy Casey; Los Alamos National Laboratory
A glossary and reference page to help students learn more about mathematics and find out what some of the special words mean. Topics: Doing What Mathematicians Do; Truth and Proof; Mathematical Objects and Their Properties; Modeling and Abstraction; Algorithms;
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 IDEAS: Interactive Dialogue with Educators from Across the State  TEACH Wisconsin Collaboration Committee, Univ. of Wisconsin
As a portal site, IDEAS provides a starting point for searching for educational materials. Although the resources have been aligned to the Wisconsin State Academic Standards, teachers in other states might find their organized list useful. Search lesson
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 If You Build It, Will They Come? Participant Involvement in Digital Libraries  Giersch, Klotz, McMartin, Muramatsu, Renninger, Shumar, and Weimar
A paper concerning a workshop involving representatives from several digital libraries with user participation. The workshop explored the ways users participate in digital libraries, and methods of studying these participants' interactions.
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 "I Get It!"  A Guide for the Mathematically Undiscovered  ThinkLinks Press
This fullcolour, K8 series focuses on conceptual language, appropriate models and simplified presentation. Books, manipulatives, blackline masters, and more.
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 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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 iKnowthat.com  iKnowthat.com, Inc.
Games and activities online. Pay a fee to remove ads from the site. Search by subject or grade level.
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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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 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 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 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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 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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 I'm on a Learning Mission  Steve Wyborney
Blog by an elementary math teacher and instructional coach. Posts, which date back to August, 2014, have included "Math Imposters," "Finding Bedrock," "The Hundreds Chart Video Tweet: My Learning Risk," "The Parent's Story of the Child," "Exploring Multiplication
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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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 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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 Improving Measurement and Geometry in Elementary Schools (IMAGES)  Research for Better Schools (RBS)
Information and resources designed to help teachers develop a deeper understanding of geometry and measurement concepts and to assist in designing meaningful instruction for elementary students. Topics addressed include: cognitive and developmental issues;
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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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 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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 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 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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 Inside Mathematics
Classroom examples of innovative math teaching methods, insights into student learning, and instructional tools ready for immediate use. Adopt a schoolwide problemsolving theme with Inside Mathematics' Problems of the Month, each featuring video overviews,
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