- Math Puzzle of the Week - Ed Pegg, Jr.
A site that celebrates math puzzles and mathematical recreations. Ed Pegg is a twenty-year member of the National Puzzler's League, and frequently contributes to the New York Times crossword, Games magazine, and National Public Radio's Sunday Puzzler.
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- Math Reasoning Inventory - Scholastic
An online formative assessment tool for the Common Core State Standards (CCSS) math domains of number and operations. Watch Math Reasoning Inventory (MRI) clips of face-to-face interviews of students as they reason and explain their strategies, demonstrate
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- MathResources247.com - Ampac Enterprises, LLC
Educational math toys, games, activities, and teaching supplies such as MathSafari, Hot Dots, Math Ad Libs, overheads, geoboards, algebra tiles, balances, and play money (realistic looking coins).
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- Maths & Numeracy Games - Keen2Learn
Increase understanding and build up speed in preparation for tests, SATs, 11+ and GCSE exams with Keen2Learn's maths and numeracy games on adding and counting, algebra, division and multiplication, fractions, numbers, percentage, shape and space, subtraction,
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- The Maths Igloo - Ian Lynagh
Contents: Pi (generating Pi and where you can get it on the 'net); Four plus five (it's nine, isn't it. Or is it? - binary, hexadecimal); All about logarithms; About the Mathematical symbol "e".
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- MathStar New Mexico - New Mexico State University
A professional development program for math teachers that incorporates the principles of Japanese lesson study. Watch QuickTime video clips of lesson study; download PDFs of research lessons on number and operations, algebra, geometry, measurement, and
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- Math Stuff - The Connaissance Museum; ThinkQuest 1996
Tutorials/definitions of math terms and concepts in Arithmetic; Algebra; Geometry; Trigonometry; Calculus; and Helpful Tables and Graphs. Also The Famous Dictionary of Mathematics - math terms for help in doing homework, from abscissa, acute, and additive
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- Math Teaching Videos - Colleen King
Macromedia Flash "videos" of problems being solved; students are invited to solve problems themselves following the given example, and then to make up and submit problems of their own. New videos appear each week. The goal of this program is to encourage
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- Math Terms - Math Forum, Ask Dr. Math FAQ
Why was the letter m selected to represent slope? What's the name of the "fraction bar"? What are some sources of information about math terms and symbols?
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- Math Toys, Presented at NCCE and NECC - Adam Rabinowitz
Excel documents for math, in the following subjects: number sense (addition and subtraction, multiplication and division), patterns and geometry, and portions (fractions, decimals, perecnts).
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- Math Trails in Ottawa - Ivars Peterson (MathTrek)
A math field trip to the National Gallery of Canada, where students followed a detailed itinerary with a variety of math-related activities including estimation, symmetries, magic squares, and more.
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- Mathville - Courseware Solutions, Inc.
Award-winning educational math software for children ages 5-13, for Mac or Windows. Programs: Kidway (8 activities for grades K-2 with up to 10 levels of play each), Jungleway (20 math adventures for grades 1-3), Speedway (16 activities for grades 2-4),
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- Math - Wonderopolis®
Each Wonder of the Day® includes several paragraphs' overview (Did you know?), modeling suggestions (Try it out!), a vocabulary list (Wonder Words), and other information to stimulate children's curiosity. Share your wonderments, questions, and answers
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- MathWonders, LLC - Amy Clark-Wickham
Makers of ClockWise products, which draw on the image of the 12-hour analog clock to conceptually unite the decimal (10), duodecimal (12), and sexagesimal (60) patterns that emerge from nature and everyday experience. Purchase the ClockWise system book,
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- Mayan Arithmetic - Steven Fought
A discussion of the importance of the Mayan symbol for zero and a tutorial on adding Mayan numbers by Steven Fought, written when he was a junior at Strath Haven High School in Wallingford, Pennsylvania.
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- Mayan Math - Karen M. Strom
The Mayans devised a counting system that was able to represent very large numbers by using only 3 symbols, a dot, a bar, and a symbol for zero, or completion, usually a shell. Charts here show the number cycle, as well as principles of arithmetic.
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- Memory, Mental Arithmetic, and Mathematics - MacTutor Math History Archives
All the mathematicians whose biographies are given in the MacTutor archive exhibited extraordinary mental powers. This article examines a few mathematicians who showed extraordinary powers of memory and calculating, together with a number of people who
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- Mighty Number
This "search engine for numbers" returns facts about figures, such as its square root, base 10 logarithm, and primality. Mighty Number also writes out quantities in several different languages (English, German, French, Spanish, and Swedish) and represents
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- Mike's Archive of Riddles and Puzzles (MARP) - Michael Winckler
A puzzle of the week, and an archive of more than 120 puzzles and riddles, with solutions, published in Die Freizeit-Woche, a weekly webzine for the AG of Prof. Bock at the IWR in Heidelberg.
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- The Million $ Mission - Cynthia Lanius
You have your choice of two payment options on your new job: 1. One cent on the first day, two cents on the second day, and double your salary every day thereafter for the thirty days; or 2. Exactly $1,000,000. (That's one million dollars!) What's the
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- M.I.T. K-12 Math Games Lesson Plans - Wendy Huang, MIT Teacher Ed Program Manager
A collection of math games lesson plans to make learning math fun and engaging for middle and high school students. Written by MIT teacher education students.
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- Monthly Themes - NRICH Maths, Univ. of Cambridge
Past problems from the NRICH Online Maths Club, archived by month. Each problem has a symbol indicating the stage, which tells you how little or how much mathematics you need to know to solve the problem but is no indication of its difficulty. The five
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- More than Magic Squares - Ivars Peterson (MathLand)
Peterson writes about magic squares, quoting Benjamin Franklin's interest in them. In addition to giving a few examples, Peterson also mentions Victor E. Hill IV's musing about whether the discoverer of the magic square actually set out to find an example
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- The Most Common Errors in Undergraduate Mathematics - Eric Schechter
Errors in communication: teacher hostility, student shyness, bad handwriting, not reading directions, loss of invisible parentheses, terms lost inside an ellipsis; Algebra errors: sign errors, everything is additive, everything is commutative, undistributed
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- Most-perfect Pandiagonal Magic Squares - Kathleen Ollerenshaw and David Brée
A companion site to the book, which gives a method of construction and enumeration of all pandiagonal magic squares of a class known as Most-perfect. Pandiagonal magic squares have the integers in all rows, all columns, and all diagonals (including the
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- Multimagic squares - carrés multimagiques - Christian Boyer
Multimagic squares are magic squares that remain magic after their numbers are raised to various powers. The largest multimagic square currently known is Boyer-Viricel's pentamagic square, to the 5th power.
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- Murderous Maths - Kjartan Poskitt et al.
Contents, descriptions of characters, updates, and "extra bits" for the books Murderous Maths; The Essential Arithmetricks; Desperate Measures; Do You Feel Lucky?; Vicious Circles and other Savage Shapes; The Phantom X; The Fiendish Angletron; The GCSE
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- Music through the Curriculum - Phil Tulga
Developers of math programs such as "Math and Music," which teaches students how to "hear" math (what does a fraction sound like? how about a shape?); and "Math, Science and Sound," an assembly and family night program that connects thunder, volcanoes,
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- My Dear Aunt Sally - Ron Larson
The game "My Dear Aunt Sally" reinforces number sense, from single operations on whole numbers to multiple operations on rationals. Features hints; audio in English or Spanish; hundreds of difficulty levels; animations of Aunt Sally and her animal friends;
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- My Magic Square - Michael Dormann
Enter a number from 23 to 100, then press the calculate button to see a completed 4x4 magic square, of which any row, column, diagonal, the center square, and the four corners each sums to the number entered. See also these instructions for completing
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- Names for Numbers - Ivars Peterson (MathTrek)
Once someone discovers an interesting pattern or type of behavior, those particular numbers are likely to earn a collective name. So we have perfect numbers, amicable numbers, lucky numbers, Mersenne numbers, Fermat numbers, Fibonacci numbers, Keith numbers,
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- Napier Bones - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
A Java simulation of the Napier bones, simple device for multiplying numbers, here used to demonstrate multiplying in bases other than ten.
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- The Nature of Mathematics - Ouida B. Kinzey; Kodak
A description of how students created a mathematical slide show based on research projects. Colorado State Standard addressed: students develop number sense and use numbers and number relationships in problem-solving situations and communicate the reasoning
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- NBA Math Hoops - Big Picture Learning
A card game that leverages the influence that National Basketball Association (NBA) and Women's National Basketball Association (WNBA) stars have on American youth. Gameplay simulates a regulation basketball game, with pairs of students racing against
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- New York Regents Exam Prep Center - Oswego City School District
A site dedicated to assisting high school students in preparing for the "new" New York State Math A Regents Examination. Covers Algebra, Geometry, and Algebra II/Trig. The materials featured for each topic include: general review/formula sheet, Regents
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- Nifty Ideas: Hands-On 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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- The Nuffield Foundation
Math teaching and learning resources include freely downloadable Free-standing Mathematics Activities (FSMAs) and Applying Mathematical Processes (AMP) activities, a mix of investigations and practical explorations. The Nuffield Foundation works to improve
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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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- NumberADay - The Mathematical Association of America (MAA)
Every working day, a new positive integer, with a selection of its properties and an illustration or photograph.
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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 - INSERM-CEA 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 multi-digit numbers. INSERM-CEA Cognitive Neuroimaging Unit also created The Number Race.
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- The Number Empire - Vitalii Vanovschi
Enter a positive integer up to 10^12, press the "Go!" button, and The Number Empire states -- in yes/no format -- whether you entered a prime number, a Bell number, a Catalan number, or a factorial. The same single click displays the integer written out
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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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- 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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- 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 1-100. Click on a number from a square to go to a page about that number.
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- Numberline Lane - Fiona Cartmell, Nick Reynolds, and Anthony Cartmell
A website accompanying books designed to help teaching and learning math through stories and cartoon illustrations. Meet the residents of Numberline Lane: Walter One, Suzie Two, Hebe Three, Nora Four, Clive Five, Nick Six, Kevin Seven, Katy Eight, Nigel
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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 Patterns in Pascal's Triangle (SMILE) - Ulysses Harrison, Dunbar Vocational High School
A lesson for grades 5 and up designed to enable students to recognize the integers, rows, and columns that comprise Pascal's Triangle. The main objective of the lesson is to enable students to reproduce the first eleven rows of Pascal's Triangle by recalling
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