- Combinatorial Games - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
A collection of interactive combinatorial games, many implemented in both normal and misère versions, including by Kayles, Nimble, and Northcott; variants of Nim, such as Wythoff's Nim; One-Pile and Take-Away games; a subtraction game, a fraction
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- Comedy Tonight, Math Style! - Ivars Peterson (MathLand)
Edward Burger and Colin Adams aren't yet as well known as such famous comedy teams as Laurel and Hardy... but they are not only performers but also math professors at Williams College in Williamstown, Mass. They bring antic energy, slapstick humor, and
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- Common Core Math - New Jersey Center for Teaching & Learning
Freely downloadable teacher-designed units consisting of one to two hundred Interactive White Board (IWB) presentation slides: each of grades K-8, Pre-Algebra (available in Spanish), Algebra I (available in Spanish) and II, Geometry, Pre-Calculus, AP
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- Common Core Online - Darren Burris
Articles on Common Core State Standards (CCSS) mathematics, dating back to December, 2011, as "scooped," or digitally curated, by a Boston, MA, teacher.
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- Common Core State Standards Initiative - Common Core State Standards Initiative
The Common Core State Standards aim to provide a consistent, clear understanding of what students are expected to learn, so teachers and parents know what they need to do to help them. The standards are designed to be robust and relevant to the real world,
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- Common-Sense Questions (Learning and Mathematics) - G. Polya; Math Forum
In his 1957 book, How to solve it, Polya describes a four-stage approach to mathematical problem-solving. He bases his approach on common-sense questions that would naturally occur to an experienced problem-solver. Polya claims teachers should pose these
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- Communication and Collaboration - The Partnership for 21st Century Skills
This page details the communication and collaboration skills framework from P21, and links to additional resources: Web Index for Communication Resources (an online index of many communication related topics and resources), Engauge overview of communication
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- Commutative, Associative And Distributive Properties (SMILE) - James E. Breashears, Robeson High School
A lesson designed to teach students to compute expressions like (56 + a) + 4 and (50 * 7) * 2; to identify the commutative and associative properties; and to rewrite expressions by using the distributive property. From the Algebra and Trigonometry section
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- Comparative Chronology of Money - Glyn and Roy Davies
This site chronicles monetary history from ancient times to the present day. The information presented is based on the book, "A History of Money." The timeline starts from 9000 BC and goes through 2002 AD.
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- Comparing Fractions - Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about comparing fractions, putting them in order, and defining equivalent fractions.
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- Completing the Square - Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about completing the square, with diagrams, geometry, and alternate methods.
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- Complexification - Jared Tarbell
View interactive, open source Java applets of fractals and other mathematically significant graphics.
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- Compound Interest to e and i - Don Cohen (The Mathman)
Graphing and exploring simple interest and compound interest. Examples of interest earned on one dollar at 6 percent compounded daily, monthly, quarterly, annually. Patterns, infinite sequence. Sample problems with some answers from Chapter 11 of Don
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- A comprehension tool for mathematics?: the Math Forum @ Drexel's Online Mentoring Guide - Renninger, Ray, Luft, and Newton
Two studies of the Math Forum's Online Mentoring Guide (OMG) address whether and how online comprehension tools might support mathematics learning. In Study 1, the culture of the preservice teachers' (PTs') mathematics classroom and their work with the
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- Computer Algebra Information Network (CAIN)
A server providing information about Symbolic and Algebraic Computation, set up by the European SAC (Symbolic and Algebraic Computation) Network. The site maintains bibliographies, supports electronic newsletters, and announces current conferences, software
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- Computer Art and Tessellations - Hans Kuiper
A site about tessellations (tiles, tessels or regular patterns), infinity pictures, optical art, Islamic art, optical illusions, auto stereograms, company logos, quilt patterns and palindromes. Figures, patterns, textures and wallpaper drawings inspired
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- The Computer Delusion - Todd Oppenheimer, The Atlantic Monthly magazine
A July 1997 article critical of the effects of the classroom use of computers.
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- Computer Generated Art Gallery - Tom Ellis
Original computer-generated fractal images. Mandelbrot Sets; Mandelbrot zoom rendered onto a sphere.
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- Computer History Museum
The Computer History Museum presents and preserves for posterity the artifacts and stories of the information age. Exhibits include histories of the Internet and of computer chess; and a working model of the Babbage Engine, first undertaken by that mathematician
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- Computers and Internet : Hardware : Calculators : Hewlett Packard - Yahoo
Yahoo's Web page of sites having to do with HP Calculators.
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- Computer Science Education Week - National Computer Science Education Week
The materials from Computer Science Education Week inspire exploration of the field any time: defining documents; posters, brochures and kits; reports and presentations; data/computer science facts; curriculum; programs and ideas; videos; and contests.
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- Computer Science Unplugged - Tim Bell, Ian H. Witten, and Mike Fellows, University of Canterbury, New Zealand
A free collection of activities designed to teach the fundamentals of computer science without requiring a computer. Because they're independent of any particular hardware or software, Unplugged activities can be used anywhere, and the ideas they contain
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- Computers, Free Will, and Marching Ants (Math Chat) - Frank Morgan; Christian Science Monitor
Is it logically possible for a computer to have free will?
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- Computer Software for Math Education - Math Forum
The Math Forum's page of suggested archives for downloading mathematics software.
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- Computer Solution Central
Shareware games for Windows machines and PDAs. Includes a free solitaire game, educational games focusing on addition and multiplication, and a date calculator.
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- Computing Before Computers - Brian Borchers, New Mexico Institute of Mining and Technology
Online introductions, with PostScript or PDF downloads, of Napier's Bones and of the Genaille-Lucas Rulers. Pictures of statistical computing devices such as the Pickett N525-ES Statrule, the cumulative binomial probability computer, the General Dynamics
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- Computing Technology for Math Excellence - Patricia Deubel
Computing Technology for Math Excellence (CT4ME) is devoted to resources for teaching and learning mathematics (K-12 and calculus) and the standards movement in education. Math resources include links to sites for basic skills mastery, problem solving
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- Compvter Romanvs (Natural Math) - Edward R. Hobbs
A Roman numeral calculator. "Caesar has proclaimed Compvter Romanvs to be the official calcvlator of the Roman Empire. Yov now have at yovr disposal the latest in high technology to assist in all manner of nvmerical problems. Yes, whether yov're bvilding
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- Conceptual Learning Materials - Conceptual Learning Materials, Inc.
Support materials intended to reinforce basic math concepts. Materials for teachers as well as students.
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- Conceptual Math Media, Inc.
Math educational products for both the classroom and family. Master multiplication facts and divisibility rules with PrimePak playing cards; create equations crossword-style with the Equate board game, also available via e-mail. Order products online
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- Conceptua Math - Conceptua Math
A commercial company offering software and professional development for mathematics education. Fractions Tools, which consist of problems and standards-aligned lessons on fractions, are currently available for free. Accompanying Student Activities, which
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- Cone, Cylinder Edges? - Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about whether cones or cylinders have edges, such as "Does a cone have an edge? A vertex?"
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- Cone Formulas (Ask Dr. Math FAQ) - Math Forum
Formulas for finding the height, surface area, and volume of a cone, right circular cone, or frustum of a cone.
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- Conference Board of Mathematical Sciences (CBMS)
The Conference Board of the Mathematical Sciences is an umbrella organization consisting of sixteen professional societies all of which have as one of their primary objectives the increase or diffusion of knowledge in one or more of the mathematical sciences.
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- Conferences on the Teaching of Mathematics (CTM) (Mathematics Archives) - Husch, et al., Editors
Currently includes presentations and contributed papers from the Fifth Conference on the Teaching of Mathematics held on June 21-22, 1996 in Baltimore, MD and the Sixth Conference on the Teaching of Mathematics held on June 20-21, 1997 in Milwaukee, WI.
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- Congruence Of Triangles - Jim Loy
A short introduction to equivalent side/angle theorems and congruence postulates in triangles.
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- Connect 4 - Keith Pomakis
Play it on the Web, specifying your own parameters. The site includes the rules of the game.
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- Connect Capture Game - Rick Nordal
This paper and pencil game combines chess with dots-and-boxes. Completing a box "activates" the enclosed chess piece, which may then capture other activated chess pieces for points.
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- Connected Mathematics Project (CMP) - Michigan State University
A project funded by the NSF to develop a complete mathematics curriculum for the middle grades (6-8), one rich in connections among the various topic strands of the subject, between mathematics and its applications in other disciplines, between the planned
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- Connected Mathematics Project Sketchpad Activities - Nathalie Sinclair, Michigan State University
Worksheets, sketches, and teacher notes for the Connected Mathematics Project curriculum (CMP). Developed by researchers from Michigan State University and KCP Technologies, who have surveyed Years 6 and 7 of CMP. Use the link at the bottom of the page
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- CONNECT: Everyone can do Math and Science - Colorado
Colorado's NSF-funded statewide systemic initiative in mathematics and science. CONNECT is charged to provide support and leadership to increase the achievement of all Colorado students in mathematics and science, kindergarten through baccalaureate (K-16).
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- Connecting Mathematics - a Maths Thesaurus - University of Cambridge, U.K.
More than an alphabetical list of words and their definitions, this site has grown from a proposal made by the NRICH project at the University of Cambridge, to develop an online dictionary of mathematics to support its other online publications. The thesaurus
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- Connecting Mathematics to Our Lives - De Orilla a Orilla
Through bilingual discussions online, sister class partnerships, global data gathering, and other classroom collaborations at a distance, students explore how math is used in their families and communities; use math skills to investigate community or
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- Connect with Music - Finn, Rudolph, O'Malley, Frankel, Ordway, and Langol
Thirty free interdisciplinary lesson plans that use multimedia, music, and technology to aid in the instruction of Language Arts, Mathematics, and Science at the middle school level. Lesson plans include comprehensive scoring rubrics, links to standards
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- ConquerMaths - Generic Maths, Ltd.
Fully online mathematics teaching system. 482 lessons with worksheets and
tests for ages 11 to 16. Money back guarantee offered. Also available from MathsOnlineTutor.com.
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- Consortium for Mathematics and Its Applications (COMAP)
"What is all this for, anyway?" COMAP helps answer that question. This non-profit organization offers multidisciplinary and academically rigorous curriculum materials and teacher development programs based on mathematical exploration of real-world problems.
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- Consortium for School Networking (CoSN) - Information Institute of Syracuse
A community of organizations, government agencies, corporations, and individuals in important leadership roles formed to further the development and use of telecommunications in K-12 education. Topics include legislative issues, conference participants
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- Constant Perimeter and Constant Area Rectangles (Connected Geometry) - Daniel Scher; Education Development Center, Inc. (EDC)
Interactive Java animations accompany the article "Theorems in Motion: Using Dynamic Geometry to Gain Fresh Insights" by Daniel Scher in the April 1996 issue of the Mathematics Teacher. The article outlines how dynamic geometry software can be used to
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- Constants, Units, and Uncertainty - National Institute of Standards and Technology (NIST)
A reference with three sections: Fundamental Physical Constants (values of the constants and related information, and a searchable bibliography on the constants); the International System of Units (in-depth information on the SI, the modern metric system),
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- Constructions with ruler and compass
- Zef Damen
A page that answers the question, What are ruler-and-compass constructions? With links to step-by-step drawings for constructions: bisecting a given angle; constructing: a line perpendicular to a given line that divides it into two equal parts; a line
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