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Power Cards: A Mathematical Puzzle - Cynthia Lanius Choose a number from 1-31. Tell me which cards below contain the number, and I can tell you the number. How do I do it? (A hint and directions for making more cards are given.) ...more>> Prime Curios! - G. L. Honaker, Jr., Chris K. Caldwell A collection of curiosities, wonders and trivia related to prime numbers. Look up a number (up to 10^21+) and find what connections it has to the primes. The database has over 3400 curios corresponding to more than 1960 different numbers. The number of ...more>> Primes and Composites (Math Chat) - Frank Morgan, MAA Online Answering the challenge: Consider the sequence of integers 10n + 1: 11, 101, 1001, ... Are there infinitely many primes? Infinitely many composite numbers? Whenever n is odd, 10n + 1 is divisible by 11. Modulo 11, 10n + 1 = (-1)n + 1 = 0 if n is odd, ...more>> Prime Talent - Ivars Peterson (MathTrek) Whole numbers have all sorts of curious properties. Consider, for example, the integer 1998. It turns out that 1998 is equal to the sum of its digits plus the cubes of those digits (1 + 9 + 9 + 8 + 13 + 93 + 93 + 83). What's the largest number for which ...more>> Printables: Student Handouts - The Learning Network PDF format printable handouts. Browse by grade or subject; check out the featured handouts; or search for a topic of your choice. Other resources also available through the Lesson Planning Center links on the site. ...more>> Problem-of-the-Week - David Poole; Department of Mathematics, Trent University, Canada Most of these problems can be done using only high school mathematics and logical reasoning. Eight problems with solutions and one without, from the fall of 1997, at Trent University, Canada. An email contact is listed, for those outside the university ...more>> Problem Pictures - Richard Phillips A CD-ROM of 184 attractive, unusual, or puzzling color photographs accompanied by activities for mathematics teaching. Images may defy explanation, motivate investigation, or inspire the viewer to answer a question. Other pictures may be the starting ...more>> Problem Solving in Mathematics - Jim Wilson; Univ. of Georgia Problems in algebra, geometry, conversion, cryptarithm, "mean," trigonometry, and a mixture of all, many with comments and solutions, from a course given in the Dept. of Mathematics Education at the University of Georgia. The site also provides links ...more>> Properties Glossary - Math Forum, Ask Dr. Math FAQ What is an operation? What is an identity? What are the associative, commutative, and distributive properties? What is the property of closure? What is the inverse of something? ...more>> Properties of Numbers (SMILE) - Leon Steinfelds, King High School A lesson that contrasts the "mean" behavior of 0, 1, 2, and regular numbers, likening numbers to students. From the "Miscellaneous" section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement. ...more>> PseudoNumerals - phonetic symbols for numbers - Allan Krill A method for remembering ID-numbers, etc., as words. The techniques used here have been used for 200 years, but now are formally defined as numerals. Presented in August at Mathfest 2002. ...more>> The Published Data of Robert Munafo - Robert Munafo Mathematical data includes Mu-Ency, The Encyclopedia of the Mandelbrot Set (History, Exploring, Area, Algorithms, Naming, etc), properties of specific numbers, such as 2.68542 . . . and 143, and very large numbers and ways to write them. Programs include ...more>> Puzzle University - Amy Galitzer A non-accredited "university," created solely for fun. Everything is free to play and take part in. Register, pass a simple test, and advance from freshman to sophomore to junior to senior to grad student this way. The puzzles get harder as you progress. ...more>> Pythagoras: Music and Space - J. Boyd-Brent A brief introduction to Pythagoras' observations on the relation between music and number. Graphics show music intervals expressed as mathematical ratios. Pythagoras observed that when the blacksmith struck his anvil, different notes were produced according ...more>> The Pythagorean Theorem and the Maya Long Count - Charles Wm. Johnson; Science in Ancient Artwork - Various essays dealing with the possible extension of the Pythagorean Theorem to the third power in relation to the mathematical and geometrical appearance of the Maya long count fractals within progressive series of right triangles. It would appear that ...more>> Raise Smart Kids - Inna Shapiro Download Powerpoint presentations of math problems, with answers: logic, basic arithmetic operations, natural numbers, pigeonhole principle, fractions, pouring, cutting, weighing, divisibility, and more. For Croatian translations of some of Shapiro's ...more>> Recreational & Educational Computing - Dr. Michael W. Ecker A magazine dedicated to computing (especially programming in BASIC) and recreational mathematics. Sample topics include fractals and narcissistic numbers; sample programs (a triangle game, a factoring program, and a pinwheel illusion) are available for ...more>> Resource Bibliography: Children's Trade Books in Math - Beth G. Newhouse, Department of Mathematics & Statictics, Arizona State University A selected bibliography of books for kids that teach and reinforce math concepts, organized by topic: counting and number, number operations, large numbers, money, geometry, algebra, miscellaneous topics. Originally compiled by Dorothy Giroux and Denise ...more>> Resource Room (Math Central) - University of Regina, Regina, Saskatchewan, Canada French version: Centre de ressources. A service of Math Central that allows mathematics educators to share resources having to do with math teaching. Submissions are stored in a database that can be browsed by educational level and curriculum strand, ...more>> Rice University School Mathematics Project (RUSMP) - Wells, Papakonstantinou; Rice University Center for Education A project established to serve as a bridge between the Rice University mathematics research community and Houston area mathematics teachers. It sponsors a variety of professional development workshops, fosters reform efforts, encourages the effective ...more>> Rich Maths Tasks to Engage - East Midlands Maths Network These teacher-made rich maths tasks in number, algebra, shape, and data handling emerged from a collaborative project run by Jon Stratford, Lead Practitioner for the Specialist Schools and Academies Trust (SSAT): arrangements, clock face, chocolate dilemma, ...more>> Rigol'Math: énigmes, problèmes et curiosités mathématiques - Jean-Marc Deleuze Le calcul de Pi; le Jeu de Nim; Convertisseur base 10 --> base 2; Multiplier sur les doigts; Multiplication égyptienne; Le carré magique; TicTacToe; Coloriage; et beaucoup plus. ...more>> Road Sign Math - Jamie Thingelstad "Driving + Math = Fun." A game to play on the road, identifying signs that suggest basic or advanced arithmetic, or that display constants, sequences, or primes. See digital photographs of actual street and highway signs that meet the "RSM" rules. Submit ...more>> Rolling and Learning® with tri-square dice - Creative Enterprises, Inc. A book describing math games to be played with 14-sided dice, suitable for grades K-6 or 8. Order form available on the web. ...more>> Roman Numeral Conversion - InnoVision Technologies Enter the Arabic number you want to convert to Roman, as long as it's less than 4000. ...more>> Roman Numeral Date Conversion Guide - Christopher Handy A guide to deciphering Roman numeral year dates as commonly found in both modern and early printed books, including a Java applet that accepts Roman numeral input in the range 1-4,999 and converts it to Arabic form. The page explains the basic principles ...more>> Roman Numerals 101 - Oliver Lawrence The Romans used only seven letters; the combination of a letter and its position could represent any number. They also used a line above the letter, so the numbering system actually represents our own very closely, with fourteen different symbols. The ...more>> Roman Numerals and Dates - Paul Lewis An illustrated introduction to Roman numerals, including Roman dates and calendar conversion, history and uses, a page on The Great 1999 Question, and a quiz. Three conversion tables are provided: Numerical 1-1449; Numerical 1450-2100; and Alphabetical ...more>> Roman numerals and decimals (Classics log) - John Durham A letter to a Classics mailing list about the origin of and ease of calculation with Roman numerals. ...more>> Roman Numerals Defined - Jim Loy A listing of some common Roman numerals and a short explanation of how they work. ...more>> Roman Numerals - Math Forum, Ask Dr. Math Common Question A selection of answers to questions about Roman numerals, such as how they represented decimals and fractions; with memory aids for remembering what letter represents what value. ...more>> Roman-Numerals.org - John Barth Lessons, worksheets, online games, and quizzes for practicing Roman numeral counting and arithmetic. ...more>> Rounding Numbers - Math Forum, Ask Dr. Math FAQ How do you round a number to the nearest tenth (10th), hundredth (100th), thousandth (1000th), etc.? ...more>> Rounding Seconds - NASA Lewis Learning Technologies Project Erv ran the 110 meter high hurdles in 13.27 seconds. His teammate, Willie, ran the same race in 12.91 seconds. Rounded to the nearest tenth of a second, how much faster was Willie's time? A detailed answer is provided. From NASA's 9th Grade Math Proficiency ...more>> SAM Learning - SAM Learning Ltd. U.K. exam revision (review) for A Levels (age 16-18), GCSEs (age 14-16) and SATs (KS3, age 11-14; KS2, age 7-11; KS1, age 5-7). Drag-and-drop exercises and online tests of math knowledge. ...more>> SAMMO - Sinclair, Nathalie; Murphy, Pat; et al. Tools for exploring, creating, and doing mathematics. Sinclair's Java applets let middle school students explore appealing mathematical situations not normally included in school curricula while using fractions, ratios, decimal numbers, and other concepts ...more>> Science, Engineering, and Technology for Youth - eXtension Lessons, news, articles, answers from experts, a glossary, and other science resources for young people. See especially Math in Child Care, which organizes suggestions for developing children's mathematical foundations into topics such as one-to-one correspondence ...more>> SCORE Mathematics Lessons - Jim Shaver, Schools of California Lessons by teachers that reflect California's Mathematics Framework and the NCTM Standards, organized by their main strands with links to descriptions of the strands: Functions, Algebra, Geometry, Statistics and Probability, Discrete Mathematics, Measurement, ...more>> The Secret Lives of Numbers A Java applet histogram exploring the relative popularity and cultural associations of every integer between 0 and one million. Numbers such as 212, 486, 911, 1040, 1492, 1776, 68040, and 90210, for example, occur more frequently than their neighbors ...more>> Segments of Circles - Math Forum, Ask Dr. Math FAQ Given partial information about a segment of a circle, how do you compute what you want to know? ...more>> Semple Math - Stevenson Learning Skills Do you count on your fingers to add and subtract? Using a sequence of images, songs, rhymes, stories, associational clues, and other mnemonics to teach and build learning, Semple Math is a mathematics program for beginning, high-risk and/or remedial students ...more>> Seussville - Random House, Inc. Download Dr. Seuss-illustrated PDFs that practice counting: Add with Cat, Count the Birds, Turtle Tower, Bartholomew's Hats, Terrific Tigers, Bofas, More Trees, and How Many? ...more>> Shelley Walsh Syllabi and notes for math courses from arithmetic review to beginning calculus. Download MathHelp a tutorial program with problem sets for Mac or PC, or learn how to use MathHelp to create your own tutorials. Brief Mathematics Articles present concepts ...more>> Shockwave Montessori Arithmetic Games - Our-Montessori Materials designed to accompany a Montessori program, suitable for any student. A link to download Shockwave Player is included. Contents: Stamp Game - use with children ages 4-7 for addition and subtraction; Large Bead Frame - extends basic addition ...more>> Simple Minds, Smart Choices - Bruce Bower - Science News Online The Center for Adaptive Behavior and Cognition at the Max Planck Institute for Human Development in Berlin has launched a project to explore the impact of bounded rationality on human judgment. The group focuses on what it calls "fast and frugal" formulas ...more>> Sketchpad Activities for Young Learners: Grades 3-5 - Nathalie Sinclair This collection of activities for grades 3-5 offers examples of the ways in which Sketchpad can be used across the range of mathematical subject areas in the elementary curriculum. ...more>> Skillswise - BBC Online Factsheets, worksheets, quizzes, and Flash games on whole numbers; measures, shape and space; fractions, decimals and percentages; and handling data. Resources for tutors include lesson plans, printable tracking sheets, a newsletter, and an expert column ...more>> SMART: Science and Mathematics Advancement and Resources for Teachers - Los Angeles Educational Partnership A program designed to help teachers in Los Angeles County (California, USA) develop their professional teaching skills and content knowledge. Links for Teachers, Students, Businesses and Institutions, Parents, and Community Members. Includes the SMART ...more>> snark (Spanish Math Puzzles) - Universidad de Buenos Aires, Math Forum Contributions are only in Spanish. Una lista de correo electrónico dedicada a la matemática recreativa, los problemas de lógica recreativa, juegos de tablero y problemas sobre ellos, rompecabezas geométricos (poliominós, ...more>> Software for Texas Instrument Calculators - Nevil Hopley A collection of teaching programs for Texas Instruments calculators. Developed and tested in classrooms since 1998, the programs make the TI83, TI83+ & TI83+ Silver Edition more than just a calculator. Order by program, age group (ages 12-18), or topic ...more>>

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