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 The rec.puzzles Archive - Massachusetts Institute of Technology (M.I.T.) A list of puzzles, categorized by subject area, from the newsgroup rec.puzzles. Puzzles include solutions compiled from various sources, supposed to be definitive. Subjects include analysis, arithmetic, combinatorics, competition, decision, geometry, ...more>> rec.puzzles FAQs by Newsgroup - Dept. of Computer Science, Universiteit Utrecht Information on the following topics: crosswords, analysis, arithmetic, combinatorics, competition, cryptology, decision, geometry, group, induction, Instructions, language, logic, physics, Pickover (Cliff), probability, real-life, references, series, ...more>> Recreational Mathematics - David Eppstein, Theory Group, ICS, UC Irvine Some Web resources for recreational math, including links to Eppstein's pages own (Number Theory, Combinatorial Game Theory, and The Geometry Junkyard) and to pages by others. ...more>> Rectangle Perimeter and Side Length - NASA Lewis Learning Technologies Project A rectangle with a perimeter of 24 inches might have adjacent sides measuring: 6 inches and 4 inches; 11 inches and 13 inches; 9 inches and 3 inches; or, 2 inches and 12 inches? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test. ...more>> A Recursive Process - Dan Anderson Anderson's blog, which dates back to June of 2010, has included posts such as "Robocode & Math," "Standards Based Grading," "Cake:Frosting (A look into a proper ratio of real math:cool tech)," "Paper Towels WCYDWT (What Can You Do With This?)," "Two ...more>> Recursos de Matemáticas en Internet - Flavio P. Información buscable, dividida en categorías que contienen enlaces comentados: altas, actividades, actualización, apuntes, buscadores, congresos, debate, enlaces, Escher, fractales, historia, lista general, Olimpiadas, publicaciones, ...more>> Recursos Gratuitos para Imprimir - Daniel Ajoy Recursos para ayudar a los estudiantes en sus tareas escolares. (The long division worksheets include two versions of the method.) ...more>> Reform Calculus Resources - Harel Barzilai Many printable activities and worksheets, some with solutions, long-term student projects, capsules and tutorials, and resources for instructors including a sample second-semester calculus course with in-class groupwork activities, projects, and student ...more>> Renaissance Learning Math Software - Renaissance Learning, Inc. A tool for educators that provides fresh exam and worksheet questions using algorithms to generate unique new permutations each time you use it. It is designed to meet the latest NCTM assessment standards for grades 5-12 using performance assessment questions ...more>> Replacing Iowa and New Hampshire (Math Chat) - Frank Morgan, MAA Online Answer to the challenge: Propose a new system for selecting Presidential candidates. Winning answer by Joe Shipman: a year before the primaries start choose five congressional districts at random to have a primary the last week in January and five more ...more>> Research Group on Graph Theory and Combinatorics - Universitat Politècnica de Catalunya (UPC) A group of about twenty-five members whose research belongs to the area, developing research projects and/or conducting works directed toward Ph.D. dissertations. Includes a searchable publication database and a page on The (Degree,Diameter) Problem for ...more>> Resource Material - Spencer, Chan; Univ. of Toronto Mathematics Network A collection of resource material for use in classes or extracurricular activities in high schools: answers, explanations, and expositions of some common but deep math questions. In the process of answering three basic questions, this area delves into ...more>> Resources for Tan's Applied Calculus - S.T. Tan; Brooks/Cole Publishing Company Chapter-by-chapter exercises, practice quizzes, practice tests, suggested group projects, review questions, and other sample resource materials for students and instructors using Tan's Applied Calculus, Fourth Edition. Also, step-by-step instructions ...more>> Resources for Tan's Applied Finite Mathematics - S.T. Tan; Brooks/Cole Publishing Company Chapter-by-chapter exercises, practice quizzes, practice tests, suggested group projects, review questions, and other sample resource materials for students and instructors using Tan's Applied Finite Mathematics, Fifth Edition. Also, step-by-step instructions ...more>> Resources for Tan's Calculus for Managerial, Life and Social Sciences - S.T. Tan; Brooks/Cole Publishing Company Chapter-by-chapter exercises, practice quizzes, practice tests, suggested group projects, review questions, and other sample resource materials for students and instructors using Tan's Applied Calculus for Managerial, Life and Social Sciences, Fifth Edition. ...more>> Ressources en français - French Language Math Resources - Math Forum Mathematics and math education resources available online in French, collected by the Math Forum. Categories: Articles and Publications (Includes excerpts from the journal abraCAdaBRI); Lessons, Activities, Teaching Materials (Lesson plans, online courses, ...more>> A Review of Logarithms (S.O.S. Mathematics) - Dept. of Mathematical Sciences, Univ. of Texas at El Paso Since logarithms are exponents, the page presents a brief history of logarithms and reviews exponential functions before continuing on to logarithms and logarithmic functions. ...more>> Revision Universe - Arnav Rawat Downloadable worksheets with questions on cumulative frequency; line graphs; mean, mode, median and range; pie charts; curved graphs; expanding brackets; graphical solution of equations; ratio; trial and improvement; area and perimeter; density, mass ...more>> Rice Mathematics Tournament - Rice University, Houston, TX An annual event for high school students and teams from schools in the Texas/Louisiana area, organized by Rice University undergraduates. Rules, schedules of events, sample problems from previous tournaments, and results of previous contests (1995-99) ...more>> Richard E. Borcherds Preprints, papers, and the author's thesis, in HTML, plain TeX, dvi, and pdf formats; problem sheets for Lie algebras or Modular forms, and solutions to some problems in Hartshorne's book; tables of positive definite lattices and coefficients of some ...more>> Richard Weber, University of Cambridge Weber's professional interest is the Mathematics of Operations Research. His site includes contact information; a list of publications; a brief CV (with further information about his research interests); a recent research paper; a teaching page (with ...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>> Rich Starting Points for A-Level Core Mathematics - Jonny Griffiths Download PDF task files of 40 open-ended investigative activities for the A Level Pure Mathematics classroom: basic algebra, coordinate geometry, polynomials, curve sketching, uncertainty and inequalities, indices and surds, sequences and series, differentiation, ...more>> Rick's Math Web - Rick Schauer Math curriculum geared toward special education learners with math disabilities and for learners preparing for the State of Minnesota's 8th Grade Basic Skills Test, with over 4,000 practice problems and step-by-step solutions for learners pre-kindergarten ...more>> Right Brain - Tom Biesanz, Mister Numbers Biesanz offers a system for learning times tables through worksheets and a CD. The site offers sample worksheets as well as videos that give an experience of the visual patterns in numbers. ...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>> Rincón Matemático Tests interactivos - Mario A. Bunge Exámenes multiple choice de Precálculo, Matemática, Análisis Matemático y Álgebra lineal. Cada examen se presenta en dos formatos: PDF y HTML. El PDF se imprime y se utiliza como una hoja de examen. Realizada la prueba, se recurre al HTML (quiz ...more>> Robert Abbott's Mazes - Robert Abbott Two very difficult puzzles programmed by Oriel Maxime and based on mazes in Abbott's books: the Sliding Door Maze, and Theseus and the Minotaur. Also a collection of reviews of the books SuperMazes and Mad Mazes, with more puzzles (but nothing interactive), ...more>> Robert J. Lang Origami - Robert J. Lang Lang has catalogued and diagrammed over 400 models, combining aspects of the Western school of mathematical origami design with the Eastern emphasis upon line and form. Read about origami mathematics, which mathematically describe the underlying laws ...more>> Rodney Carr's Home Page - Deakin University, Australia Books and software on statistics and advanced spreadsheet design. Contact the author for passwords to access downloadable documents and executable Microsoft Excel workbooks such as XLStatistics, for statistical analysis of data; XLGenetics, for illustrating ...more>> Rolling a Die Until Every Face Has Appeared (Math Chat) - Frank Morgan, MAA Online How many times do you think you need to roll a normal die to be 90% sure that each of the six faces has appeared at least once? Why? Answer: It takes 23 rolls, as Al Zimmerman discovered in a computer experiment rolling 5000 dice until 90% of them had ...more>> Rolling with Reuleaux - Ivars Peterson (MathLand) Why is the cover of a manhole round? The usual answer is that a circular lid, unlike a square or hexagonal cover, won't fall through the opening. The circle works because it has a constant width, defined as the distance between a pair of parallel lines ...more>> Roman-Numerals.org - John Barth Lessons, worksheets, online games, and quizzes for practicing Roman numeral counting and arithmetic. ...more>> Room 108 Math - John Rickey Online math practice for young children: addition, subtraction, multiplication, division; solving combinations of coins; putting numbers in order; counting to 1000, and more. ...more>> Rose and Twinkleberry's Guide to Building Your Own Puzzles Using LEGO Building Blocks - Doug Walker Plans for making 32 classic puzzles using LEGO blocks. ...more>> Rosebush Math Line Puzzles - Math Forum Three puzzles: 1) plant 7 rosebushes so that they form 6 straight lines with 3 rosebushes in each line. 2) plant 10 rosebushes in 5 straight lines with 4 bushes in each line. 3) plant 19 rosebushes in 9 straight lines with 5 bushes in each line. Questions, ...more>> Rounding a Decimal - NASA Lewis Learning Technologies Project Round 12.5861 to the nearest hundredth. A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test. ...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>> Roxanne Eckenrode's Storefront - Lulu.com - Free Self-Publishing - Roxanne Eckenrode Self-published math worksheets. Several are free. They are downloadable and printable; correct answers will spell out a message or fill in a puzzle. ...more>> R. S. Schaeffer - Randy S. Schaeffer, Math & Computer Science, Kutztown University of Pennsylvania Schaeffer teaches a course called "Methods of Teaching Secondary Mathematics." Download the lessons created by his students that call on Geometer's Sketchpad, graphing calculators, and Microsoft Excel. Lesson topics address parallel lines, box and whisker ...more>> Rubik's Cube Information - Michael Reid All about Rubik's Cube - even a mailing list. Site contents include: the Nederlandse Kubus Club; Rubik's cube pages on the Web; Cube books; Sources of cube-like puzzles; the author's notes, including an optimal cube solver; other Cube solutions on the ...more>> Rubik's Cube Java Applet - Michael Schubart To twist the cube, press the mouse button over a cubelet face that belongs to the slice you want to move. Keeping the button pressed, drag the mouse in the desired direction; then release the button. Moving the whole cube is done in the same way - just ...more>> Rubik's Online - Rubik/Seven Towns The official online site for the Rubik's cube. Play with the cube and other Rubik's games and puzzles online; find information on where to buy Rubik's products; use the forum to exchange views, opinions, comments, suggestions and anecdotes related to ...more>> Rubix Corner - Duane Cash The site includes information regarding the Duane Cash Cube Collection now featured at Hessport's Rubikshop in their "collectibles" section. New puzzles include the Rubik's Triamese, Fusion, Fusion+, SpeedFusion, 5x3, and 4x3 Cubes, which give those interested ...more>> Rudi Mathematici - Rudy d'Alembert, Alice Riddle, and Piotr R. Silverbrahms Matematica, giochi matematici, problemi, indovinelli e farneticazioni. Soprattutto una rivista, RM contiene Il Compleanno, Problemi del Mese, Bungee Jumpers, Soluzioni e Note, Quick & Dirty, Pagina 46, Paraphernalia Mathematica, Allegati ed Eventuali, ...more>> Sadlier-Oxford - William H. Sadlier, Inc. From the publishers of the textbooks Progress in Mathematics and Math Alive at Home in Spanish, activities and vocabulary, a primary glossary, and an intermediate glossary. ...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>> Sam Loyd Official Site - The Sam Loyd Company This site is dedicated to introducing Sam Loyd and his puzzles to a whole new generation. Loyd was a famous puzzle inventor in the 1800s, till his death in 1911. Puzzles with answers, descriptions of famous puzzles for sale, FAQs and other information. ...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>> Sara Billey Sara Billey researches combinatorics, algebra, Lie theory, algebraic geometry and probability. Her papers on these topics may be downloaded in PostScript or gzipped PostScript format. The syllabi and problem sets for her undergraduate courses, i.e. ...more>>
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