 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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 Noetic Learning: Your Online Math Learning Center  Li Kelty, Noetic Learning, LLC
Offers a worksheet generator with online publishing capability, in the basic operations and money. See also Noetic Learning's online programs for gifted elementary students, summer enrichment and learning retention, and math contests. Free samples of
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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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 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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 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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 Not So Humble Pi  Craig Snodgrass
Humorous wall calendars that run from March to March, in honor of Pi Day, 3/14. Also, buy greeting cards that celebrate pi, and submit your own πku poetry. A portion of all orders goes to the Juvenile Diabetes Research Foundation.
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 Nova Scotia Software Evaluation Reports  Ednet
This evaluation of microcomputer software and multimedia products is coordinated by the Program Branch of the Nova Scotia Department of Education and Culture. The software reviews are published to assist educators in selecting software for use in public
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 NOVA Teachers: Featured Teacher  PBS
Teachers' featured stories of a lesson plan using one of the NOVA films. Lesson titles include: Students Inclined to Study Galileo, Exploring Research Bias, Placing Value on Maya Math, Teaching with Trebuchets, Bridges Form Foundation for Geometry Unit,
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 NRICH Maths, the Online Maths Club  Univ. of Cambridge, UK
A project that aims to establish a permanent national centre for curriculum enrichment to provide mathematical learning support for very able children of all ages. The learning and enjoyment of mathematics are promoted through an Internet Newsletter and
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 Numbaland  Lomas, Derek; Ching, Dixie; and Sun, Jeanine
Four simple Shockwave Flash games for developing a sense of number concepts: Battleship Numberline (estimating position on the number line), Block Basher (in the style of Tetris, drop blocks of the same color to knock each other out by estimating positions
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 Number and Word Puzzles  Ken Egan
Number and word puzzles, including Digicross, in worksheet and interactive (Java) format.
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 Number Aquarium  France & Associates
A way to help children learn the basics of writing and counting their numbers. Number Aquarium integrates sound and animation to teach number formation and recognition to early education students; animals of the sea show how to draw the numbers. Requires
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 Number Bases  Math Forum, Ask Dr. Math FAQ
What is base 10? Binary? Hexadecimal? How can you convert from one base to another?
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 The Number Catcher  INSERMCEA Cognitive Neuroimaging Unit
"Play. Count. Calculate." Learn basic concepts of number and arithmetic, such as concrete sets, digits, number words, base 10, and the logic of multidigit numbers. INSERMCEA Cognitive Neuroimaging Unit also created The Number Race.
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 Number Facts  Math Forum, Ask Dr. Math Common Question
A list of sites with facts, curiosities, trivia, and other information about individual numbers.
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 A Number Game  Zusheng Rao
Imagine this interesting game. Given 9 numbers (1,2,3,4,5,6,7,8,9), can you make a number like 1997 by using these numbers and +  * operations without changing their positions? This applet can tell you: put 9 in the column corresponding to "Max Number"
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 Number Glossary  Math Forum, Ask Dr. Math FAQ
What are abundant, amicable, deficient, figurate, happy, narcissistic, palindromic, perfect, polygonal, proper divisors, semiperfect, sociable, square, tetrahedral, triangular, and weird numbers?
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 Number Guessing  Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
Think of a number and answer a few questions posed by the computer. After a while the compter will announce your number. The trick is based on a special card design whose variations appeared more than a hundred years ago.
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 The Number Gym  Melvyn Rust, Number Gym Software
Free, interactive, Shockwave Flash numeracy software. These activities are particularly suitable for use with Interactive Whiteboards. There is a full version for sale, as well. Currently this software comprises: 1. Number line activites; 2. Number Grid
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 Numbering Systems and Place Values  John Knoderer, The MazeMan
Primarily a page about large numbers. Topics covered include: Place Values, ones up to trillions; Place Values, tenths down to trillionths; the American Numbering System; Googol and Googolplex; and the British Numbering System.
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 Numberland  Count On
Number facts and trivia for the numbers 1100. Click on a number from a square to go to a page about that number.
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 numbermaze  Mike Reilly & Jenks Norwalk
A Sudokulike maze puzzle that uses the number pattern from a clock face, one through twelve. Link these numbers in either direction – clockwise or counterclockwise – through the maze to solve the puzzle. Read complete rules, path strategy, hints, and
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 NumberNut.com  Andrew Rader Studios
Introductions to shapes and colors, counting numbers, addition, subtraction, multiplication, division, order of operations, dates and times, number types, fractions, decimals, percents, estimation and rounding, ratios, money math, factors, graphs and
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 A Number of Things  Karyn Vogel
Blog where a K5 Math Coach in Burlington (VT) "shares ideas and resources related to mathematics and education." Posts, which date back to October, 2011, have included "Math and Image," "A new way of problemsolving," "Sugar and Ice book review," "Plus
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 Number Patterns  Harvey Heinz
A brief description of why mathematics is often called the science of pattern followed by examples of a variety of magic squares of various types; examples of orders 5 to 12d magic stars, and selections from Heinz's collection of over 400 number patterns
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 Number Puzzles  Ken and Dima Boone
Arithmetic puzzles along with hints and answers include "Laying Eggs," "Four Fours Into Seven," "Target Number 278," "Inserting Plus Signs," and "How Many Legs?" and "What's My Number?"
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 NumberQuotes  Steve Duncan
Enter some digits, and get data containing that number to help put that figure in perspective  or to just associate it with a fun factoid. Learn what cities have your number as a population, or about its purchasing power in dollars. Many fivedigit
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 NumbersBee  NumbersBee.com
Practice arithmetic by yourself, play with others online, or compete in NumbersBee's national tournament.
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 Numbersense Games  Hassan Baajour, Research Officer
Games for practicing clock time, counting, and more, developed at the London Knowledge Lab (LKL).
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 Number Sentences  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about number sentences and other puzzles involving order of operations, such as Four 4's and making 24.
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 Numbers from 1 to 10 in Over 4000 Languages  Mark Rosenfelder
Click on the map to move to the languages for that area, or select from: IndoEuropean, Dravidian, and minor European languages; AfroAsiatic, Caucasian, NiloSaharan, Kordofanian, and Khoisan languages; NigerCongo languages; Uralic, Altaic, Tai, AustroAsiatic
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 Numbers from One to ThirtyOne: A Page for Each Day of the Month  Richard Phillips, Shell Centre for Mathematical Education
Trivia about the calendar numbers one through thirtyone. Based on the book Numbers: Facts, Figures and Fiction, which answers questions such as how Room 101 got its name, what you measure in oktas, and which number links Alice in Wonderland, rainbows
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 Numbers Test  Tommie Berry
A Java program for teaching children their math facts. Select the digits and functions (addition, subtraction, multiplication, and/or division) you want to practice, and hit the start button. The applet will generate questions for you, will tell you when
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 Number Time  BBC Learning
Learn about numbers and the number system by playing Shockwave games, printing out activities to do away from the computer, watching "Addem" star in fun cartoons that reinforce ideas of quantity; and listening to math songs, accompanied by animation.
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 Number World  David Geistert
Key in any positive integer less than 10^15 and press the "Look up" button for properties about it: factorization, divisors, cross sum, equivalence in multiple bases, and more. Number World's math tools include an equation solver, an equation system solver,
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 NUMDRUM  John T. Harrison
The "Numdrum" helps children understand addition, subtraction, and other fundamental arithmetic concepts. An alternative to the number line and the 10 x 10 number square, this "decimal helical number line" lists integers around a tube, ten to a turn,
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 Numenko  Tom Lennett
An arithmetic crosswordlike game "invented by a father to help his daughter with her maths." Players alternate laying down tiles marked with numbers and operations to form horizontal or vertical number sentences; the resulting sum, difference, product,
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 numeracy  Adult Numeracy Network, Math Forum
A mailing list for those interested in the discussion of educational issues around adult mathematical literacy (ABE/GED/ESL, workplace, and literacy teachers, tutors, and adult learners), maintained by the Adult Numeracy Network (ANN). Read and search
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 Numeracy and Quantitative Literacy  EXTEND  Perspectives in Mathematics Education
Links to articles on diverse views on the quantitative demands of today's society and the relation of quantitative literacy to mathematics education.
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 Numeracy Games  James Barrett
Flash games in number facts (including funky mummy and brilliant beadstring), counting (funny fingers and duck shoot), bridging through 10 (techno tortoise and +/ number lines), time (hickory dickory and fairy clock), shape and measures (shifting shapes),
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 Numeracy Helper  Educational Computing Support Services
The prime function of this website is to provide software to support teachers and students in the classroom or at home. There are over 75 free interactive online numeracy modules (Year 1 to year 9) with printable work sheets plus answer sheets. There
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 Numicon  Numicon, Ltd.
By representing numbers as shapes, Numicon's teaching program addresses different learning strengths with a multisensory approach. Download free mathematics display resources (for bulletin boards and the like); topics include Numicon shapes, pattern
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 Nummňlt  Maurici Carbó Jordi
Java applets: an area "workshop," which explains area and division by converting numbers in area units; an architect's toy blocks, with gravity; connecting and programming elementary logic (in the form of pipes with light bulbs signifying true sentences);
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 NurtureMinds.com: Learn Mathematics with the Abacus  NurtureMinds.com
Distributors of the Learn Mathematics with the Abacus book series. Benefits of abacus work and mental mathematics discusses on the site; various packages of the texts for sale.
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 NYC HOLD  Bas Braams and Elizabeth Carson, editors
Honest Open Logical Debate (HOLD) on Mathematics Education Reform addresses mathematics education in the New York City schools. Organized into Issues in Mathematics Education, Curriculum Reviews, Standards, New York City Issues, Call to Action, NYC News
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 nysmmn  Math Forum
The discussion group of the Association of Math Teachers of New York State's Math Mentor Network. This list is specifically for Elementary Math Mentors in the state, but welcomes all who have an interest in elementary math education. Read and search archived
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 Odd Day  Ron Gordon
Mathematical observations, original musings, news coverage, and cartoons in celebration of January 3, 2005 (1/3/5), July 9, 2011 (7/9/11), and other times when three consecutive odd numbers make up the date. Gordon, retired from teaching high school in
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