- Greater Than, Less Than Symbols - Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about "greater than" (>) and "less than" (<) symbols, such as memory aids for telling the difference between the two.
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- Grid Puzzle - Rick Reed
A magic square Java applet that presents a 4x4 grid with mixed-up numbers in it: drag individual numbers or flip, move, or swap rows and columns to make diagonals, rows, and columns add to 34.
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- Groups, Graphs, and Paul Erdös - Ivars Peterson (MathLand)
The relative isolation that Andrew Wiles sought in solving Fermat's Last Theorem is certainly not the rule in mathematical research. Doing mathematics is really a remarkably social process. The abundance of meetings, conferences, workshops, colloquia,
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- Hand Made Manipulative Instructions - Margo Lynn Mankus
Pattern block cutouts: triangles, squares, smaller and larger rhombuses, trapezoids, and hexagons. Base-ten blocks in sets of ones, tens, and hundreds; and base-five blocks in sets of ones, fives, and twenty-fives. XY-block sets of X, X2, XY, Y, and Y2
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- Hankies, Snarks, and Triangles - Ivars Peterson (MathLand)
Both Alice's Adventures in Wonderland and Through the Looking-Glass and What Alice Found There contain many examples of Dodgson's passion for mathematical games, puzzles, logic paradoxes, riddles, and all sorts of word play. Indeed, his fascination with
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- Hebrew Letters / Consonants - Amerisoft Inc.
A Hebrew letter and number chart from the At Home With Hebrew computer tutorial.
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- Heureka: páginas lúdico-matemáticas - Rodolfo Valeiras Reina
Home page of a Spanish math enthusiast from Cádiz, España. Calidociclos (a kaleidocycle is a ring of tetrahedra joined edge to edge; as you twist it inward or outward, the tessellations on the faces of the tetrahedra meet in new ways); Problemas
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- A history of Zero - MacTutor Math History Archives
Linked essay on the development of the concept of zero. There are two important but different uses of zero: one as a empty place indicator in our place-value number system, and one as a number itself in the form we use it as 0. There are also different
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- Home Run Numbers - Ivars Peterson (MathTrek)
The integers 61 and 62 have been very much in the news this summer. On the major-league baseball front, Mark McGwire hit his 62nd home run on Sept. 8, and Sammy Sosa matched that total on Sept. 13, surpassing the record of 61 home runs in a season held
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- How Many Different Paths - Karen Wheeler; SCORE Mathematics
A discrete mathematics lesson for working on addition and multiplication skills, with connections to counting, adding, multiplying, and Pascal's triangle. Aligned to the California State Standards. From the Schools of California Online Resources for Educators
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- iKodeko - iKodeko Software, Inc.
Free online math quizzes cover least common multiple (LCM), Roman numerals conversion, number to words, and algebra word problems. Review performance, and participate in discussions around individual test items. Download the iKodeko Worksheet Maker freeware
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- IMSA Math Journal - Michele Micetich; Illinois Mathematics and Science Academy
A journal published annually since 1993; each issue contains articles, problems, and activities spanning a wide variety of topics of interest to high school mathematics teachers and students. Articles are available in both on-line and downloadable versions.
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- Inspirational Mathematics for Interactive Whiteboards - PowerpointMaths.com
A large collection of Powerpoint resources for the mathematics classroom, for use with electronic whiteboards, in the categories: algebra, data handling, enrichment, measures, mental maths 5000, number, and shape and space.
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- Integers, Rational/Irrational Numbers - Math Forum, Ask Dr. Math FAQ
What is an integer? Are fractions rational numbers? What about .9999...? How about decimals? pi? the Golden Ratio?
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- Integer: Tic-Tac-Toe Four In A Row! (SMILE) - Conchita A. Little, Terrell School
A lesson that employs a phenomenological approach to the introduction of integers using a coordinate plane and ordered pairs. From the Recreational and Creative Math section of a collection of almost 200 single concept lessons by the Science and Mathematics
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- The IntegerZone - Philip Dorrell
A Java applet which presents the integers as a scrollable rectangular grid of cells, each cell displaying one number. Different modes illustrate different mathematical topics by defining the user's interaction with the grid in terms of response to mouse
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- Intelligent Tutor Math Educational Software, Inc.
The programs in the Intelligent Tutor software series contain tutorials designed to help students learn and master Grades 7-12 math subjects. The programs are designed with school versions for use in schools, and home versions for individuals in self-study
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- The Interactive Mathematics Classroom - Rex Boggs
A digital library of third-party technology resources for teaching mathematics, from kindergarten to calculus. Register to comment on interactive whiteboard files, Powerpoints, TI-Nspire documents, Excel spreadsheets, and other digital resources. RSS
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- Introducing Mathematics
This website looks at some areas of mathematics that are not familiar to most people, such as Ramsey theory and set theory, but introduces them in an uncomplicated manner.
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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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- iPracticeMath - Prashant Agrawal
Type in your responses to iPracticeMath's online multiple-choice questions, and press the orange "submit" button to check your answers: addition, subtraction, multiplication, division, algebra, "word to number" (interpreting written-out quantities), and
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- I Used To Believe - Mat Connolley
A collection of childhood beliefs, such as thinking that cats are female dogs, that seeds swallowed will sprout fruit from your ears, and a primal fear of toilets. "Some of the beliefs come from overactive imaginations, but a lot are the result of parental
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- janko.at - Angela and Otto Janko
Puzzles, games, and Java applets on logic, number, and chess. See also the Jankos' Retrograde Analysis Corner and analyses of legal moves in chess.
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- J. Frederic Teubner, The Toymakers of JTEU - J. Frederic Teubner
See, in particular, the Reut·Reut 12x12 Transmagic Square. Also board, card, and dice games, magnets, t-shirts, books and tapes, coloring books, an art gallery, and a millennium 2000 computer art calendar.
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- John and Betty's Journey into Complex Numbers - Matt Bower
A children's book-on-the-Web from Australia, designed to introduce complex numbers in story form in a way that is intuitive and enjoyable for students. John, Betty, and their dog Trevor solve a series of problems designed to introduce integers, fractions,
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- K-12 Math Problems, Puzzles, Tips & Tricks - Math Forum
Links to calculation tips (Beat the Calculator, Divisibility Rules, Multiplication Tips), Math Problem sets, and math number and line puzzles.
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- KidsPsych - Magination Press
Flash games to help young children develop cognitive thinking and deductive reasoning: Oochina on the Farm, Rotating Faces, Oochina in Space, I Spy, Oochina the Archeologist, Oochina's Doughnut Dilemma, Oochina the Treasure Hunter, Oochy's Cube Adventure,
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- The Knight's Tour - Dan Thomasson
The Knight's Tour web site shows various ways to solve open and closed knight tours. The site also offers several animated tours, artwork, and new concepts (magic squares, tessellations, and conjectures about prime numbers) derived from knight moves on
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- Know Your Roman Numerals - George W. Metz
"What a Roman Legionary needs to know in order to count in Ancient Rome": a chart of numbers, with their names in Latin and the corresponding Roman numerals.
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- KRN Software
Free online games for Java-enabled browsers. Java Edutainment games require matching shapes and colors in Space Cargo and Cargo Bay, simple addition in Numeric Defenders, and odd and even number identification in Even Steven, Jr.
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- KryssTal: Mathematics - Kryss Katsiavriades and Talaat Qureshi
Essays with worked examples: numbers, algebra, Pascal's Triangle, trigonometry, logarithms, graphs, calculus (differentiation), and more.
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- LatticeWork Software, Inc.
Shareware for Windows, both educational and entertainment. Includes three math programs, plus various family-oriented strategy/logic games. Available for personal or school use.
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- Lavarand - LavaLite
Lavarand is a system by which a pseudo-random number generator is seeded by the digital output of a photograph of six Lava Lite® lamps.
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- The Learning Box: K-5 Math Software
Developer of elementary mathematics software for students in grades K-5. Featured titles include The Manipulative Math Series: Logic Blocks, Base Ten Blocks, and the Peg Board (learning about sets). Shockwave Flash activities include Flowering Fractions
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- Learning Games and Activities for K-12 - Creative Teaching Associates
Over 200 non-electronic learning games and activities for ages 4 through adult. Math products include flash cards, activity cards, board games, math chips, cards, books, cassettes for basic math facts drill, and many more. Products are also listed by
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- Learning Planet - Michael Schipper
A site that offers online interactive learning games, in Shockwave, stressing basic math (and other) skills for preschool to sixth grade. Games include Number Train, 123 Order, Count Your Chickens (all number learning games); Spacey Math (four basic operations);
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- Learning to Learn: Problem Solving - Greg Gay, Learning Disabilities Resource Community (LDRC), University of Toronto
Find out about your learning style by solving challenging arithmetic, logic, and mathematical story problems. Puzzles include analogy exercises which reveal our abilities to infer, map meaning, classify, and alter knowledge in the face of novel learning;
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- Lee's Roman Numeral Converter - Lee K. Seitz
Convert a number into Roman numerals and back again online. Site also includes a brief introduction to Roman numerals, a FAQ, and some comments on the structure of the converter program.
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- Le site des maths à petites doses - Saint-Martin Arnaud
Supplementary information and explanations of various mathematical topics, often illustrated with figures and JavaScript, as well as some sample problems and multiple-choice quizzes. In French.
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- Les jeux de Lulu, le lutin malin - Regine
Jeux, écrits en JavaScript: jeux maternelle autour du nombre, orientation, déplacement, mémoire; jeux élémentaire et plus (logique, math, orientation). JavaScript games for children.
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- Lesson Plan Search - Google
Free math lesson plans that make use of Google Earth, Google Calendar, Exploring Computational Thinking, and other products and projects of the search engine company: Telling time & Google Calendar; Human Dimensions Project; Median of Latitude Data;
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- Lesson Plans for the Graphing Calculator - Institute for Technology in Mathematics, William Paterson College, Wayne, NJ
Solutions of Radical equations; Extreme Values and Calculus; Parallel Lines and Properties of Slope; Safe Linking with the TI-82; Finding Perfect Numbers; Graphing Celsius and Fahrenheit. By teachers from northern New Jersey.
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- Lesson Plans: Mathematics - The Educator's Reference Desk
K-12 lesson plans categorized by subject (Algebra, Applied Math, Arithmetic, Careers, Functions, Geometry, History, Measurement, Number Sense, Number Theory, Patterns, Probability, Process Skills, and Statistics), as well as links to internet sites featuring
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- Letopweb.org
Des jeux éducatifs pour mathématiques au primaire: connait les chiffres de 0 à 9; pratique le carré des tables de multiplication; retrouve la figure qui correspond à celle de gauche; fait des exercices de calculs; apprend
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- License Codes - Ivars Peterson (MathTrek)
Some states use complicated schemes for establishing driver's license identification numbers. The numbers may include check digits to detect errors or fraud, or they may encode such personal data as the month and date of birth, year of birth, and sex.
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- Links to Information on Number Systems - Suzanne Alejandre
Arabic, Babylonian, Chinese, Egyptian, Greek, Mayan, and Roman number systems, two to ten links in each category.
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- Lure of the Labyrinth - Learning Games to Go (LG2G)
In this free online adventure game, middle-school pre-algebra students rescue their pets, combat mysterious monsters, and embark on whimsical math missions to gain a better understanding of proportions, fractions, and ratios, variables and equations,
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- MAA Bookstore - Mathematical Association of America
A searchable list of books, with descriptions, in the following categories: Algebra; Analysis; Applied Mathematics; Calculus; Career Information; Computing and Computers; Elementary Models; Games, Puzzles, and Popular Exposition; Geometry and Topology;
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- Magical Methods - Magical Methods Enterprises
A source for Vedic mathematics, as developed by Pradeep Kumar. Find examples of arithmetic shortcuts for calculating squares, cube roots, multiplication, and division. Play games such as a calculation speed builder; purchase products to prepare for the
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- The Magic Hexagon - Frank R. Kschischang
A diameter-5 magic hexagon. Each integer from 1 to 19 appears exactly once, and the sum of the numbers along any column or diagonal is the same.
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