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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 ...more>> Number Strings - Imm, Kara; Lambert, Rachel; et al. A place to find new strings, post strings, get feedback on design or number choice, and discuss the pedagogy of number strings, a classroom routine based on "sets of related math problems, crafted to support students to construct big ideas about mathematics ...more>> Numeracy Works - David Hartmann, Numeracy Works LLC Numeracy Works is a commercial software company which sells Tabula, a new tool for math education. Use Tabula to create, construct, cut, tape, fold, and transform. Make fold patterns, tiling patterns, tessellations, and perspective drawings. Also on ...more>> Numerical Integration: Accumulating Rates of Change - Geometry Center The fundamental theorem of calculus tells us that if we know the rate of change of some quantity, then adding up (or integrating) the rate of change over some interval will give the total change in that quantity over the same interval. But often scientists ...more>> Nummòlt - 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); ...more>> The Official Scoring Site of the International Mathematical Olympiad 2001 - Wolfram Research The IMO 2001 competition, for students under the age of 20 who have had no postsecondary-school education, was held July 1-14, 2001, in Washington, DC, USA. Each country represented is allowed up to six participants. This site records scores and supplies ...more>> Olimpíada Brasileira de Matemática - Sociedade Brasileira de Matemática (SBM) The Olimpíada Brasileira de Matemática (OBM) is a competition open to all students enrolled in Brazil's fundamental or middle studies. Browse or download archived exam problems and solutions dating back to 1997. Read news about olympiads, or the journal ...more>> Olimpiada Matemática Española - C. Sánchez-Rubio Convocatoria XXXV Olimpiada (Curso 1998/99); Comisión de la Olimpiada Matemática Española; Información para alumnos y profesores; Problemas de las últimas Olimpiadas (Fase nacional); Material para preparación; ...more>> Oliver Byrne's edition of Euclid - Digital Mathematics Archive, Univ. of British Columbia An unusual and attractive edition of Euclid was published in 1847 in England, edited by an otherwise unknown mathematician named Oliver Byrne. It covers the first 6 books of Euclid, which range through most of elementary plane geometry and the theory ...more>> One, Two.. Infinity - Marian Small PDFs of presentations from the professional development consultant and author of Making Math Meaningful to Canadian Students K-8, More Good Questions: Great Ways to Differentiate Secondary Mathematics Instruction (9 - 12), Eyes on Math: A Visual Approach ...more>> Online Catalog - Creative Publications Educational publishers of MathLand (K-6) and Mathscape (6-8) curricula, supplemental resources, and manipulatives. Teachers' lounge, professional development information, workshops and conferences, and product and ordering information. ...more>> Online Class: Internet Education Projects - TBT International, Inc. A model project to show teachers how to integrate technology into the classroom. Designed so that live, interactive content will draw out technical skills. Subscribe by classroom to receive a printed teachers' resource guide; materials delivered free ...more>> Onlineindiaeducation - Atul Mittal Page after page of questions with links to view answers and explanations: aptitude (area, series, "problems on trains," boats and streams, odd man out, and more), puzzles (sudoku, number, logical, clock, etc.), and reasoning (cause and effect, arithmetic, ...more>> ONLINE MATH: An Internet Mathematics Program - Larson, Neptune, Falvo; TDLC, a Division of Larson Texts, Inc. ONLINE MATH is a mathematics tutorial instruction program available through the Internet. Designed to help students improve their math skills in a self-paced environment, the program is mastery based, customizable, and includes readiness tests, cumulative ...more>> Online Math Applications - Leung, Jiang, Jiang, Chiu, Klopfer, Chiu; ThinkQuest Junior Activities, examples, problems, and online quizzes about math applied to real world situations in investing (a stock market simulation game), music (classical MIDI files), history (biographies and anecdotes), science (astronomy, computers, 'math in the ...more>> Online Math Center - Whatcom Community College, Bellingham, WA Resources for mathematics students and teachers, including answers to Frequently Asked Questions and online Live Math applications demonstrating algebra, calculus, and linear algebra topics. ...more>> Online Math Education - Yordan Petrov Petrov Math tutorials and quizzes, with some math history information as well. Includes a discussion forum. Available in English or Bulgarian. ...more>> Online Math Help for All - Ramachandran Seerangan Primers and problems, a math dictionary, worksheets organized by grade and concept, and more. See in particular Seerangan's YouTube channel, where he posts narrated whiteboard videos of step-by-step solutions to specific problems. ...more>> Online Math Help & Learning Resources Learn basic concepts behind arithmetic, algebra, geometry, statistics and set theory. Includes some SAT test preparation help, math games, math worksheets, math riddles, math quotes, math mnemonics and math trivia. ...more>> The Online Test Page - Elias Saab Math and vocabulary drills, including MathCOUNTS, SAT, ACT, and Missouri MMPT questions, as well as links to relevant sites. ...more>> On Motivation and Understanding - Cut the Knot!, Alexander Bogomolny Fourth in a series of columns that draw on Frank Morley's fundamental paper On the Metric Geometry of the Plane n-Line - dealing with what amounts to his proof of the Trisector Theorem. Bogomolny outlines Morley's reasoning first and then supplies necessary ...more>> OOG: the Object Orientation Game - MCM Productions MCM Productions' first publicly released software application. This 4-in-1 tiling puzzle game for the MS-Windows environment allows players to test their problem solving ability with over 300 puzzles, including Tangrams, Pentominoes, Hexagons and Polyominoes. ...more>> Open-Ended Assessment in Math - Cooney, Thomas J.; Sanchez, Wendy B.; Leatham, Keith; and Mewborn, Denise S. Over 450 open-ended, field-tested assessment items, distributed more or less equally among elementary, middle school, and high school grade levels. The questions relate to five major content areas, based on the NCTM Standards: number and operation; probability ...more>> Open-Ended Math Problems - Gwenn Holtz and Mary Lee Malen, Levering School and the Franklin Institute An eight-month slate of open-ended problems for middle school students to solve in preparation for standardized testing. The authors have composed and selected problems that lend themselves to multiple solution paths, and then organized them into three ...more>> Open Middle - Johnson, Nanette; and Kaplinsky, Robert "Open middle" problems, hints, and answers, all aligned to the Common Core State Standards (CCSS). Introduced by Dan Meyer, these kinds of math challenges have a "closed beginning," meaning that they all start with the same initial problem; a "closed ...more>> OPenn - University of Pennsylvania Libraries High-resolution archival images of manuscripts from the University of Pennsylvania Libraries and other institutions, along with machine-readable descriptions and technical metadata. Digitized cultural heritage materials on mathematics include "Treatise ...more>> Open Problems for Undergraduates (DIMACS) - Robert Hochberg, Center for Discrete Mathematics and Theoretical Computer Science, Rutgers Univ. A collection of open problems in Discrete Mathematics in the areas of Graph Theory; Combinatorial Geometry; Geometry/Number theory; and Venn Diagrams, currently being researched by members of the DIMACS community. These problems are easily stated, require ...more>> Open Problems - Jeff Erickson Open problems, mostly in geometry, including folding, combinatorial, and algorithmic problems. Contents include: Existence Problems: Does Object X exist? Combinatorial Problems: How complex is Object X? Algorithmic Problems: How fast can Problem X be ...more>> Optical Data School Media A publisher of math and science programs, including Windows on Math, an activity-based laserdisc and videotape curriculum built around the NCTM standards. Most products are for levels K-8. Find Correlations for Optical Data products to a wide range of ...more>> Optimalcut Web Software Fee JavaScript optimization solver for cutting stock and bin packing problems. Specify pieces and rolls to linearly cut rectangles out of bars, pipes, tubes, metal profiles, extrusions, linear wood boards, and more (1-D cutting); or sheets made of glass, ...more>> Origami Mathematics - Tom Hull Information on origami and the mathematics of paper folding. With an origami math bibliography and pictures and tutorials in origami geometric construction, as well as links to other origami sites and events. ...more>> OrigamiUSA Resources for origami enthusiasts and for those just learning the art of paper folding: Events (calendar, convention, and exhibit information); Resources (model index, links, e-mail discussion list, folding groups directory, and lending library); Shopping ...more>> Original Lesson Plans - Mathematics - Thirteen/WNET New York Original Web-based activities developed by Thirteen Ed Online Master Teachers. Each lesson consists of an overview with learning objectives, procedures for teachers, and "organizers" for students -- hand-outs, bibliographies, and other materials. Math ...more>> ostermiller.org - Stephen Ostermiller Converters, Calculators, and JavaScript include Multiplication Game, in which letters represent digits in a multiplication problem; Length, which converts between units of length and distance; Roman Numerals, which converts between Arabic and Roman numerals; ...more>> Other Maths - Jon Perry Notes, applets, and proofs on a variety of open problems and conjectures: roots of x^p, highest power of 2 that divides ab + bc + ca, a prime product paradox, consecutive integers, (n + 1)!, Collatz, n-secting a line, the first lower digit, Fibonacci, ...more>> The Pai Intersect - Jimmy Pai Blog by an Ottawa (Canada) secondary mathematics teacher and graduate student in education. Posts, which date back to August, 2012, have included "Understanding Fraction Division #2 - Part 1," "\$100 Tablet Project," "Spiraling through the curriculum," ...more>> Palmer's Ponderings - Christina Palmer Blog by a high school math teacher in Massachusetts. Posts, which date back to June, 2013, have included "I wonder...... (Cheerios in a chimney box)," "Four = Eight (almost)," "Today I Shut Up," "State Test Questions That Make Me Angry," "TMC14," "Compounding ...more>> Panagiotis Stefanides Geometry presented at national conferences in Greece. Contents include: Quantization of Circle Duality; Logos Pyr Chronos; 'Buena Fortuna' (artwork); Geometric Mean Ratio (T) by Ruler and Compass; Quadrature Master Theorem; Corollary (Circle Circumference ...more>> Paper Cup Mathematics - Jerry Neidenbach, Sue Harvey, and Marilyn McArthur; Park City Mathematics Institute In this classroom activity, a PCMI Resource for Teachers, students investigate whether paper cups roll out the pattern of an annulus and how you can tell, how the dimensions of the cup relate to the dimensions of the annulus, and whether you can predict ...more>> paperfolding.com - Eric Andersen Learn to fold origami from diagrams; read about the history of paper-folding, including the origin of the term "origami." The origami & math essay contains sections such as Origami, Geometry, and the Kawasaki Theorem; and Origami and Topology. ...more>> Papers on the History of Mathematics - Gregory Cherlin, Rutgers University A random selection of term papers submitted in undergraduate, one-semester courses on the history of mathematics. Topics include zero, Fermat, Euler, Newton, Euclid's proof of the Pythagorean Theorem, Fibonacci, Vieta, conic sections, mathematics at Princeton ...more>> Passy's World of Mathematics Lesson outlines by this Australian-born math teacher include Venn diagram word problems, combining like terms, translate word equations, and isometric drawing and 3d cubes; PowerPoint presentations include traversable networks, sharing using ratios, real ...more>> Pasta by Design - George L. Legendre Photos of architect Legendre's 2011 book by the same title. Pasta by Design provides an illustrated taxonomy of over 90 forms of pasta, along with the mathematical formulae, descriptions of special attributes, and advice on specific cooking uses for each ...more>> Pattern - Drew, Wallace; Mathematics Across the Curriculum, Dartmouth College An interdisciplinary course in textile design and elementary group theory. Syllabus, course pages (notes, figures, questions, group work and homework), final project and class artworks from a 1996 math and art cross-curricular class at Dartmouth College. ...more>> paulus gerdes's Storefront - Paulus Gerdes Purchase print editions or download Gerdes' titles, some also available in Portuguese, Dutch, and French: Drawings from Angola: Living Mathematics, Enjoy Puzzling with biLLies, Puzzle Fun with BiLLies, The Bisos Game: Puzzles and Diversions, Introducing ...more>> PCTM Online Puzzle of the Week - Judy Brown; Pennsylvania Council of Teachers of Mathematics Weekly illustrated math puzzle online competition from 1996-97, with an archive of past puzzles. Since 1997 this project has moved to the Math Forum to become its Middle School Problem of the Week. ...more>> PentoMania - Douglas Twitchell, Virtu Software This pentomino-based puzzle game for Windows allows students to solve geometric puzzles or create puzzles and designs of their own. ...more>> Pentomino Relationships - Adrian Smith The site describes how pentominoes (twelve pieces of wood, each a different shape and each made of five cubes) fit together into rectangles or cuboids, as well as the subsequent challenge of finding as many other solutions as possible from the one just ...more>> Perimeter Efficiency - William Blackwell Perimeter Efficiency, also known as Isoperimetric Inequalities, compares the actual perimeter of a shape with the circumference of the circle that would be required to enclose the same area. Since a circle will enclose any given area with the least amount ...more>> Perplexus - flooble A large archive of mathematically inclined puzzles and problems displayed by category. Includes logic, number theory, geometry, probability and other problems. All are rated by difficulty and quality and discussed in depth by visitors. Most with solutions. ...more>>
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