 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)
The first report published in Teaching, Learning, and Computing to provide data for a nationally representative sample of more than 2,000 teachers on how they did — and did not — use the Internet.
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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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 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
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 Investigating Patterns: RUBBER Geometry (Topology)  Jill Britton
Selected web pages for educators, each leading to recreationoriented learning experiences for middle school students. Topics include: Topology / Anamorphic Art; Jordan Curves / Mazes / Networks / Map Coloring; MatheMagic / Mobius Strip; Flexagons.
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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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 Investigations in Projective Geometry  Dwayne Alvis and Wanda Nabors
How threedimensional scenery is reproduced on a twodimensional piece of paper. Construction exercises and a Geometer's Sketchpad file to download.
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 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
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 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.
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 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
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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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 IQFlash.com  Sergey Melnikov
Logic and math games include a variation of Nim, Rhumb Line (similar to tictactoe), 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 tictactoe,
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 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
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 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.
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 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.
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