 Interactive Mathematics Miscellany and Puzzles  Alexander Bogomolny
"The peculiar beauty of Mathematics lies in deduction, in the dependency of one fact upon another. The less expected a dependency is, the simpler the facts on which the deduction is based  the more beautiful is the result." This awardwinning site offers
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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 Math World: MathematiX  Dalin, Inc., Israel
Windows software for examining and verifying or rejecting concepts, principles, definitions, assumptions and theorems, for middle school, high school, and college. With fully dynamic quantitative scales, interactive dynamic tools, and data for demonstrating
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 Interactive Nim  Bryan Clair, University of Chicago
The interactive Nim page. A twoplayer game  you versus the computer. On your move, you can 'take' any number of 'o's from a single row, by deleting them. You may not pass. To win, you must take the last 'o' left in the game, or equivalently leave the
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 Interactives  Annenberg Media
Interactives from Annenberg Media provides educators and students with strategies, content, and activities that can enhance and improve students' skills in math, science, history, arts, and language. Math topics include: Geometry 3D Shapes, Math in Daily
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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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 InterMath Dictionary  The University of Georgia
A searchable dictionary for middle schoollevel mathematics students, teachers, and parents. The dictionary provides related terms, everyday examples, interactive checkpoints, and challenges. Funded by the National Science Foundation, InterMath is a collaborative
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 InterMath  The University of Georgia
InterMath is a professional development effort designed to support teachers in becoming better mathematics educators. InterMath workshops provide an ongoing support community, a lesson plan database, and a discussion board. The site provides mathematical
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 The International Association for Statistical Education  Department of Statistics, University of Auckland
An international umbrella organization for statistics education, the International Association for Statistical Education (IASE) promotes, supports, and improves statistical education at all levels everywhere around the world. Download or read the Statistics
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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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 The International Netcourse Teacher Enhancement Coalition (INTEC)  The Concord Consortium
An online professional development course that introduces inquirybased teaching and learning to mathematics and science classrooms: networkbased netcourses are designed to engage teachers in their own investigations, supplying skills, a knowledge of
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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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 The International Study Center  Boston College
Dedicated to conducting comparative studies in educational achievement. Principally, it serves as the International Study Center for IEA's studies in math, science, and readingthe Trends in International Mathematics and Science Study (TIMSS) and the
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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 Lessons  Susan Boone; GirlTECH '95, CRPC, RUSMP
Lessons with an Internet component, developed for GirlTECH'95, a program funded by CRPC Rice University and the RUSMP. A Functional Housing Market asks students to search the Internet for housing prices and compare them to the area of a house, thus deriving
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 The Internet Mathematics Challenge  Julie Houston and David Trask
Explore the geometry of architecture, and share your observations with the students who built this site. With a Javaenabled browser, mouse over pictures of buildings to find the angles, arches, and other geometric figures appearing in Durham Cathedral,
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 Internet Math Hunt  Math Forum
The Internet Math Hunt consists of questions about math and mathematicians. The answers can be found somewhere on the Internet. Answers should be in three parts: 1. What did you find? 2. What is the URL (address) where you eventually found the information?
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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 Scout Project  Computer Sciences Department, University of WisconsinMadison,
Librarians and educators filtering the Internet, reading hundreds of announcements each week looking for the online resources most valuable to the education community. Subscribe to The Scout Report, a fast, convenient way to stay informed, highlighting
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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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 Intriguing Tessellations  Marjorie Rice
Famous for discovering four hitherto unknown tilings of pentagons, Marjorie Rice got her start in tessellations reading an article by Martin Gardner. This site features mathematical explanations and examples of several tessellations using pentagons, as
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 Introducing Powers and ModelsI (SMILE)  Sarah Barrett, Mars Hill School
A lesson for grades 410 designed to teach students to discover how to square numbers; that squares are areas; the meaning of terms (exponent, to the power of, etc.); to visualize powers; to construct models and describe shapes; and to manipulate puzzle
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 Introduction à l'algèbre  Gilles G. Jobin, Projet Diderot
An interactive course, with extensive use of the Geometer's Sketchpad. Sommaire: Introduction générale; Conseils techniques; Test diagnostique (En chantier); Définitions et vocabulaire; Représentation sur la droite numérique;
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 Introduction to Algebra (The Math League)  Mark Motyka; Math League Multimedia
A Math League basic topic. Contents include: Variables; Expressions; Equations; Solution of an equation; Simplifying equations; Combining like terms; Simplifying with addition and subtraction; Simplifying by multiplication; Simplifying by division; Word
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 An Introduction to Angles (SMILE)  Samuel A. Anoma, Hyde Park Career Academy
A lesson designed to teach students to name, classify, identify, and measure angles. From the Geometry and Measurement section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement.
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 Introduction to Fractal Geometry  Michael Frame, Benoit Mandelbrot, and Nial Neger
A collection of pages to support a first course in fractal geometry for students without especially strong mathematical preparation. See examples of fractals in the arts, humanities, and social sciences. Learn about selfsimilarity, plane transformations,
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 An Introduction to Fractals  Paul Bourke
"What is a fractal? B. Mandelbrot: A rough or fragmented geometric shape that can be subdivided in parts, each of which is (at least approximately) a reducedsize copy of the whole. Mathematical: A set of points whose fractal dimension exceeds its topological
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 Introduction to Fractions on the Numberline (SMILE)  Claudia R. Jones, Crane High School
A lesson designed to teach students to read fractional parts of an inch on a ruler, and to deal meaningfully with the typical number line. From the Arithmetic section of a collection of almost 200 single concept lessons by the Science and Mathematics
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 Introduction to Geometry  ThinkQuest 1996
Four basic lessons in geometry, each divided into separate sections, with a final test and a reference page with formulas. 1  Basics (Terminology, Relationships, Calculations); 2  Introduction to Proofs (Theorems, Reasoning, Proofs with Segments, Proofs
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 Introduction to Math and Spreadsheets  Jan Garner
Exercises on spreadsheets. Using ClarisWorks, graph a spiral or a few parabolas; build a scale model of the Great Pyramid or find the biggest box you can make from a sheet of cardboard; plan the budget for a picnic.
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 Introduction To Solving Equations (SMILE)  Mary Lynn Bochenek, Central Junior High School
A lesson designed to teach students to arrive at an equation of the form X = [ ] in which the variable is isolated and the solution is then obvious through use of equivalent equations. From the Algebra and Trigonometry section of a collection of almost
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 Introduction to Symmetries  Chaim GoodmanStrauss; The Geometry Center
Studying symmetries called isometries, which preserve distances. Pattern and symmetry appear in virtually every human culture. Symmetry surrounds us, both in the natural world and in the world of human artifact... the arrangement of needles on a pine
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 Inventing Science: From Thales to Euclid  Gregory Crane, Tufts University
Classics 189: Greek Science. Euclid's synthesis remains the most successful single book on math every written, but advances were made in many other fields such as geography, astronomy and the natural sciences. Aristotle, in particular, laid the foundations
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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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