 The NCTM Standards  Mathematics Education at The Math Forum
The publication of the National Council of Teachers of Mathematics Standards in 1989 was a milestone for mathematics education. While not universally acclaimed, the Standards have by and large have met with great acceptance if not full comprehension.
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 NCTM Standards (Standards 2000)  National Council of Teachers of Mathematics (NCTM)
NCTM's Principles and Standards for School Mathematics is the compilation of the lessons learned and experiences gained over the years since the 1989 Standards were released. The site features include: an online version of the Standards (including illustrations,
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 Neat Math and Programs  Robert Simms, Clemson University
A Map of All Triangles (and see the Introduction to a Euclidean Model of Hyperbolic Geometry; Porch Things (the underlying structure is a cube); generating Pythagorean Triples (includes a JavaScript calculator and a way to generate them from one number);
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 NebraskaMATH  Center for Science, Mathematics & Computer Education
This statewide partnership educates and supports Nebraska's K12 students and teachers to improve achievement in mathematics for all students and narrow achievement gaps of atrisk populations. Programs include Math in the Middle, Primarily Math, Nebraska
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 NECTAR Foundation: New Era Classroom, Technology and Research
A nonprofit foundation specialising in the development and marketing of educational software in the kindergarten to grade 12 program with a focus on mathematics software programs. It also develops and markets print, video, and audio materials for students
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 The Need For Statistical Literacy In Australian Society  Robyn Williams, Jane Watson; Australian Broadcasting Corporation
The Need For Statistical Literacy In Australian Society, a transcript from Ockham's Razor, a weekly radio program. Some misconceptions about statistics, including: the way Australian children interpreted "average" after seeing a Ford Motor Co. ad on TV
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 Negative Exponents  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about negative exponents, from simplifying nested negative exponents to whether multiplying by 10 to the negative 3rd power is the same as dividing by 10 to the positive 3rd power.
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 Negative Numbers (Middle School Math)  Homeworkhelp.com, Inc.
What is a negative number? The number line: definitions and terminology; What do "greater than" and "less than" mean when some of your numbers are negative? Addition, subtraction, multiplication, and division involving negative numbers.
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 Negative Times a Negative  Math Forum, Ask Dr. Math FAQ
Why does a negative times a negative equal a positive? Does this ever happen in the real world?
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 NetDay
NetDay promotes the effective use of technology for education, providing direct assistance to underserved schools, and general assistance to decisionmakers. Its programs include original research, national surveys, and articles and resources resulting
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 Network Montana Project (NMP)  Churchill, Thomas
K12 Earth System Science Curricular Materials that integrate mathematics, science, and technology. Atmosphere: Weather and Climate; Geosphere: Structure and Dynamics of the Solid Earth; Hydrosphere: Water Cycle and Sea Surface Temperature and Phytoplankton;
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 Network Tutors
Provide online worksheets and learning plans for elementary and middle school students. Provide tutors in all areas up to college level courses. Various plans available.
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 Neufeld Learning Systems, Inc.
Mathematics programs designed to facilitate learning in destreamed classes as well as in home study and distance learning. Interactive programs for: algebra, equations, exponents, fractions, geometry, and integers. Understanding exponents and algebra
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 New Classrooms  New Classrooms Innovation Partners
From the advocates of the "Teach to One: Math" curriculum, individualized instruction that "reimagines the role of educators, the use of time, the configuration of physical space, and the use of data and technology within traditional public, charter,
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 New Directions in Pedagogy in Other Courses  Mathematics Education at the Math Forum
Examples of mathematics courses being revised in the light of new approaches to pedagogy: articles and presentations at conferences in probability and statistics; precollege algebra; linear algebra; abstract algebra, and differential equations.
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 New Geometric Tilings  Adrian Fisher Maze Design
A page that celebrates the beauty of 4, 5, 6, and 7fold geometric tilings, grouped according to the regular polygons that they fill. Where possible, actual dates and designers are stated. Nearly all these tiling examples are based on sides of the
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 The New Jersey Mathematics Coalition
The New Jersey Mathematics Coalition (like the other 50 such state Coalitions) was created to facilitate and encourage improvement in the teaching and learning of mathematics as recommended in the national reports. The Coalition serves as a catalyst for
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 New Jersey Mathematics Curriculum Framework  New Jersey Mathematics Coalition
Online copy (in PDF format) of the Curriculum Framework presented to the NJ State Board of Education in January, 1997. The Framework was developed to provide information, guidance, and assistance to teachers and curriculum developers in implementing
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 NewMedia Project: Integers  MathStar, Los Angeles County Office of Education
The NewMedia Project area of MathStar offers resources in mathematics for middle school teachers and students. The Integers unit is comprised of three lessons: Introducing Integers, Adding/Multiplying Integers, and Subtracting Integers. Each of the three
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 NewPath Learning
Publishers of handson print and interactive digital learning resources for reinforcement and review. See, in particular, NewPath Learning products for math, browseable by grade and national or state standards. Shop for and purchase Curriculum Mastery®
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 New Standards  Beauregard Parish (Louisiana) Public Library
Links to sites with information about and discussions of standards, both countrywide and particular to Louisiana.
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 The New Teacher's Guide to the U.S. Department of Education  Richard W. Riley, Secretary of Education
Archived information as of September 2000. See the current Teachers page for uptodate information. This site contains information on teachinga national priority; voluntary national tests in reading and math; raising academic standards; grants and
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 Newton's Castle  Steve Feld
Learn about color, optical illusions, how cars appear to roll uphill on "magnetic mountains," why dogs chase cars, and more; then test your learning with the online quiz. Also, see quotations and a timeline of Newton's life. With a bibliography and webliography.
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 NewtonsWindow.com  Suzanne Sutton
For students, families, teachers, and homeschoolers as they learn and teach math. NewtownsWindow.com offers math challenge excursions online, summer learning activities, and educational gifts and ideas. With suggestions for reinforcing concepts at home,
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 New York City HOLD National  Elizabeth Carson
This advocacy organization's mission begins: "The performance of American students in mathematics is mediocre at best. Reform efforts over the past two decades have only made matters worse. We are advocates for school mathematics education reforms that
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 New Zealand Mathematics  Ministry of Education, New Zealand
Units and lesson plans organised by level and curriculum strand, in Maori and English, focusing on solving problems. Topics address levels 16 of the New Zealand mathematics curriculum and include probability, statistics, measurement, and geometry.
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 Next in Line  Ivars Peterson (MathLand)
Number sequences present all sorts of intriguing puzzles and patterns. Consider the sequence of counting numbers: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 .... Now, take out every second number, leaving: 1 3 5 7 9 11 13 15 ...; form the cumulative totals
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 NFL Stats & Research Articles  Roland Beech
Indepth statistical coverage and analysis of the National Football League (NFL). See player stats and ratings by position, and regular season team stats such as drive charts, play call by down, and red zone performance. "Classic" articles include correlation
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 Nice Guys Finish First (Sometimes) (MatheMUSEments!)  Ivars Peterson (Math Muse for Kids)
There's trouble in the schoolyard. A kid has accused you and your pals of doing something you shouldn't have. You have to decide whether to stick with the gang or go your own way. You're not completely sure you can trust your friends, so you face a tough
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 NICSI Mountain  Kay Emerson, Evan McKenna Foundation
NICSI (Now I Can See It) Mountain is a 3D math manipulative that allows students to visualize and kinesthetically explore abstract concepts such as rates of change, fractions, ratios, commmon multiples, factoring, graphing, and linear equations. It consists
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 Nifty Ideas: HandsOn Math Lab  Fran Endicott Armstrong
Rationales, lesson plans, notes, and sample materials for first quadrant graph games (graph hide and seek and collinear game) and skip counting and multiples activities (counting people and hands and fingers, and arithmetic calculator). The triangular
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 Nikoli  Nikoli Co., Ltd.
From the Japanese magazine publishers that popularized sudoku puzzles: the nikoli.com site releases three or more problems every day  more than 100 new problems a month. Step through tutorials and solve Flash puzzles of Slitherlink, Nurikabe, Heyawake,
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 Nim  Doug Ensley, Shippensburg University
Play online: two people play with several piles of stones. On each move a player
removes as many stones as he or she would like, but forms only one pile. The player who takes the last stone wins.
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 The Nine Planets, a Multimedia Tour of the Solar System  Bill Arnett
An overview of the history, mythology, and current scientific knowledge, with descriptions and data, of each of the planets and moons in our solar system. Each page has text and images, some have sounds and movies, and most provide references to additional
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 Nine Primes in a Row  Ivars Peterson (MathTrek)
...number aficionados Harvey Dubner of New Jersey, Paul Zimmermann of INRIA Lorraine in France, Tony Forbes of Great Britain, and Nik Lygeros and Michel
Mizony of Claude Bernard University in Lyon, France, mounted a campaign and solicited computational
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 NIST Virtual Library (NVL)  National Institute of Standards and Technology
Online library of the National Institute of Standards and Technology. Includes subject guides, an online library catalog, NVL databases, a selection of electronic journals, NIST publications, online resources, global Web resources, and hints and help
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 Nix the Tricks
Problematic vocabulary, notation, mnemonics, and other shortcuts reconsidered and "fixed" by teachers who "want to put a stop to the superficial, cheap tricks that have infected the teaching and learning of math." Submit your own trick, or debate and
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 NOAAServer  National Oceanic and Atmospheric Administration
Search for environmental information on multiple NOAA computers; retrieve data from NOAA's electronic archives; view graphics; and download or order data.
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 The Nobel Prize in Physics – Educational  The Nobel Foundation
Step through explanations of physics concepts, some with Flash activities: explore hidden worlds with microscopes (as developed by laureates Zernike, Ruska, Binnig and Rohrer), look into the interior of matter (from Chadwick to van der Meer), and take
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 No Matter What Shape Your Fractions Are In  Cynthia Lanius
Students explore geometric models of fractions and discover relations among them, reinforcing their knowledge of fractions by using online pattern block activities. The lessons are designed for students to work independently or with guidance from the
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 NonEnglish Math Resources  Math Forum
Students and teachers with NonEnglish language needs will find mathematics and math education Web sites organized by category for the following languages: Spanish, French, German.
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 NonEuclidean Geometries  Jim Loy
A short essay on Euclid's Fifth Postulate and mathematicians' dissatisfaction with its overcomplexity: Lobachevsky's and Riemann's postulates;
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 NonEuclidean Geometry  MacTutor Math History Archives
Covers Euclid's Elements through the end of the 1800's, with 23 references (books/articles).
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 Nonius  Jaime Carvalho e Silva
Nonius  Projecto Computação no Ensino da Matemática  Arquivo Electrónico de Matemática. History of mathematics; mathematics topics, mathematics teaching, technology in teaching, and links to relevant mathematical
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 Nonpartisan Education Review
The Nonpartisan Education Review provides a forum for those interested in education issues but put off by the education policy groups affiliated with the political parties. The groupo aims to make a difference by remaining nonaligned and nonpartisan.
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 Noon Day Project  CIESE Collaborative Projects
Over 2,000 years ago, Eratosthenes made a remarkably accurate measurement of the earth's circumference. This project is a recreation of that experiment and invites the collaboration of students living at different latitudes to take measurements of shadows,
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 The Noon Observation Project  Cathie Godwin, Kathleen Smith; College of Education, Univ. of Illinois at UrbanaChampaign
A joint effort among interested schools worldwide in accurately estimating the circumference of the earth. How to compute local noon at your location; the original 1999 form for submitting Noon Observations; an explanation of the formulas for computing
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 Northeast Regional Climate Center (NRCC)  Department of Soil, Crop and Atmospheric Sciences, Cornell University
The NRCC serves a 12state region that includes Connecticut, Delaware, Massachusetts, Maryland, Maine, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, and West Virginia, working to acquire and disseminate accurate, uptodate
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 Northwest Math Conference
An annual conference that "brings together mathematics teachers from all levels of primary, secondary, and undergraduate education to learn and share about mathematics and pedagogy." Find information on Northwest Math Conference (NWMC) programs, speakers,
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 Northwest Regional Educational Laboratory (NWREL)
A searchable site whose mission is to improve educational results for children, youth, and adults by providing research and development assistance in delivering equitable, highquality educational programs. NWREL provides research and development assistance
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