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 Circle Scribe Disk Compass - Bill Harper A new instrument for manually exploring shape and space, used to draw diagrams on paper, from cartoon characters to limacons, as well as standard geometric constructions. Unlike toys like spirograph, the Circle Scribe Disk Compass requires some geometrical ...more>> Circles - Diameter, Circumference, Radius and the Discovery of Pi (SMILE) - Kathleen Ryan, Randolph Magnet School A 7th grade lesson designed to help students identify and measure the diameter, circumference, and radius of a circle. The students discover the approximate value of pi through the relation between the diameter and circumference. From the Geometry and ...more>> Circles in Geometry - Lesson Ideas: Math: Geometry; Teachnet.Com Whole-class and group activities for teaching circle concepts, pi, circumference, etc. ...more>> Circles in the Sky - Ivars Peterson; Science News Online Detecting the shape of the universe: evidence of a finite, multiply connected universe may show up in microwave data from future spacecraft. ...more>> Circles of Dissonance - Ivars Peterson (MathTrek) Much of today's music rests upon ancient tradition going back thousands of years to the time of the Greek mathematician and mystic Pythagoras. The Pythagoreans observed that tones an octave apart are pleasing to the ear. In modern terms, one can say ...more>> Circles of Light: The Mathematics of Rainbows - Frederick J. Wicklin, Paul Edelman; The Geometry Center How are rainbows formed? Why do they only occur when the sun is behind the observer? If the sun is low on the horizon, at what angle in the sky should we expect to see a rainbow? This lab helps to answer these and other questions by examining a mathematical ...more>> Circles of Light: The Mathematics of Rainbows - Steven Janke; The Geometry Center How are rainbows formed? Why do they only occur when the sun is behind the observer? If the sun is low on the horizon, at what angle in the sky should we expect to see a rainbow? This lab helps to answer these and other questions by examining a mathematical ...more>> Circle Zap - Michael Bulmer A Java applet that gathers data on your ability to use a mouse rapidly and accurately, with suggested questions for classroom activities. ...more>> Circular Reasoning - TJ Leone, Leone Learning Systems, Inc. A free, Java-based software tool for thinking about circles, sectors, segments, and angles. Based on Montessori principles of learning through the manipulation of objects. Activity cards included. For Windows computers only. Includes ideas and stories ...more>> Circumference of an Ellipse (Ask Dr. Math FAQ) - Math Forum A discussion of the derivation of the formula for the circumference of an ellipse. Also discussions of the evaluation of the formula, and approximating the circumference. ...more>> Circumferences, Diameters, and Radii (SMILE) - Dwayne Belle, Fuller School A lesson designed to teach students to measure circumferences in inches, and compute radii and diameters, given different circumferences. From the Geometry and Measurement section of a collection of almost 200 single concept lessons by the Science and ...more>> Citizen Maths - Ufi Charitable Trust Free courses of self-paced video tutorials, discussions, and hands-on activities to try out. Developed by Calderdale College (UK), with CogBooks, the Institute of Education, and Oxford Cambridge RSA (OCR). ...more>> The Civilization of the Mayans - ThinkQuest 1997 Essentially a school paper in web format, covering, briefly, Mayan art, astronomy, ball-game, books and hieroglyphics, class system, and number system, with rated related Mayan links and references, and an about-the-authors section. ...more>> CK-12 Providers of free, standards-aligned, open content in the STEM subjects. See, in particular, the CK-12 Foundation's flexbooks: customizable, free, curriculum-aligned K-12 math textbooks. In addition to dozens of student editions, some math flexbooks feature ...more>> ClarisWorks Graphing: Spreadsheet Lessons - Suzanne Alejandre Step-by-step directions for using ClarisWorks spreadsheets, helpful in exploring the differences between exponential functions and linear functions. Bar graphs, pie charts, pictograms, and other graphs for linear, polynomial, and exponential functions. ...more>> Clash of the Chess Titans - Keith Devlin (Devlin's Angle) Thoughts on the Kasparov-Deep Blue match of 3 May 1997. Throughout history, people have been building machines that can perform tasks better than humans. When Kasparov, referring to his upcoming match, talks about "an area that defines human beings," ...more>> Class2Class - Melanie Sprouse Class2Class is a clearinghouse designed to facilitate student and class participation in Internet projects, including collaborative projects, data-collecting experiments, peer tutoring, and keypal exchanges designed to enhance the mathematics in your ...more>> Class Champ multiplication & division Software intended to help children learn the times table by heart using Pop Times Table songs; show how multiplication works by displaying the question graphically; and quicken the child's ability to recall answers and allow the child to practice questions. ...more>> class.com - Class.com, Inc Class.com provides distance education over the Internet, and offers a complete high school diploma from a fully accredited, university-based independent study high school. Math course listings include a math skill review, basic mathematics, beginning ...more>> Classes With Web Resources - University of Illinois at Urbana-Champaign (UIUC) A list of University of Illinois hypertext courses that are using the Web to augment traditional instructional materials, covering, among other topics, Civil Engineering, Computer Science, and Mathematics. Follow the links to read the course descriptions ...more>> Classical and Quantum Chaos, A Cyclist Treatise - Predrag Cvitanovic' An online textbook on chaotic systems and dynamics, including exercises, solutions, and a guide to related literature. Read the book online in hyperlinked PDF format, or download it as a gzipped PostScript file. By the CATS cyclist team: Cvitanovic', ...more>> Classical Dynamics: Spinning Eggs — A Paradox Resolved - H. K. Moffatt and Y. Shimomura, Nature "If a hard-boiled egg is spun sufficiently rapidly on a table with its axis of symmetry horizontal, this axis will rise from the horizontal to the vertical. Conversely, if an oblate spheroid is spun sufficiently rapidly with its axis of symmetry vertical, ...more>> The Classical & Keynesian AD-AS Model of the Canadian Economy - Elmer G. Wiens; Egwald Web Services Ltd. Macroeconomics model of the Canadian economy considering both the aggregate supply and aggregate demand for products. Illustrated article with interactive supplemental page. ...more>> The Classical Simplex Method - Prof. Hossein Arsham; University of Baltimore A companion site to Arsham's Applied Management Science course. This introduces the simplex method for solving linear programming problems by first discussing the algebraic solution and pivoting row operations. ...more>> Classic Fallacies - Philip Spencer; University of Toronto Mathematics Network Mathematical "proofs" demonstrating, among other things, that 1 = 2 and that all people in Canada are the same age. Each consists of several steps, and users search for the flaws. For every step there is explanation of why the flaw is or is not in that ...more>> Classic Iterated Function Systems - Larry Riddle These pages investigate several of the classic iterated functions systems and their associated fractals. Each IFS consists of affine transformations involving rotations, scalings by a constant ratio, and translations. For each example is given * a ...more>> Classic Problems - Math Forum; Ask Dr. Math FAQ Classic problems from the Ask Dr. Math FAQ (Frequently Asked Questions) files, including: age word problems, birthday probability, boy or girl?, camel and bananas, coin problems, doubling pennies, grazing animals, liars and truthtellers, the missing dollar, ...more>> Classification of Patterns - Brown-Herbst, Donnelly, Stratton, Anderson-Nielsen; The Geometry Center Materials about symmetry and classification of repeating patterns for students in grades 7-10 using wallpaper patterns, to be used as either an introduction or a review: a classroom-ready source of information. A final project created for Math 5337, Technology ...more>> Classification (SMILE) - Delores B. Wilburn, Shakespeare School A lesson designed to motivate students to understand classification, and to teach decision-making, how certain objects relate to the number system, and the meanings of some words used to express mathematical ideas. From the Patterns and Logic section ...more>> Classifying Numbers - Math Forum, Ask Dr. Math Common Question A selection of answers to questions about classifying numbers, such as "How are the different types of numbers related?" and "What is a real number?" ...more>> ClassK12.com - LogTera Online adaptive math apps designed for distributed practice. Aligned to the Common Core State Standards (CCSS), ClassK12's K-5 game-based interactive environment and visual models reward students with points and badges. Freely access worksheets and practice ...more>> Classroom Books and Libraries: Math - Attanasio & Associates, Inc. The mathematics selection from this vendor of classroom libraries and books, which include Big Al and Shrimpy, It's about Time, My Very First Book of Shapes, The Shapes We Eat, How High Can a Dinosaur Count?, Everyone Uses Math, Pigs on a Blanket, Underwater ...more>> Classroom Capsules and Notes - MAA Online Classroom Capsules and Notes brings together the best of 114 years of the short classroom materials from the MAA print publications. These materials are free to everyone. ...more>> Classroom Compass - Adams, Powell, Assoc. Editors; Southwest Educational Development Laboratory A magazine published from 1994 to 2005, with ideas, activities, and resources for teachers interested in improving instruction in science and mathematics, and links to simple classroom activities with ideas about learning and instruction. Each issue presents ...more>> Classroom Conversation (Learning and Mathematics) - Nicholls, Hazzard; Math Forum In their 1993 book Education as Adventure, John Nicholls and Susan Hazzard explore students' understandings of the nature and point of school learning and the idea that students are valuable critics of the classroom curriculum and their own learning. ...more>> Classroom Projects - TEAMS Distance Learning, Los Angeles County Office of Education (LACOE) A site for teachers looking for a content area project or contest for the classroom. Join a TEAMS project or browse a list of projects and contests sponsored by other organizations. Extensive list of upcoming, current, ongoing, and completed projects ...more>> ClassteacherCTLS Short instructional math videos from the YouTube channel of Classteacher Learning Systems, the makers of iPerform and other interactive classroom technology: Counting Numbers, Decimal Fractions, and more. ...more>> ClassZone - McDougal Littell, Publishers In ClassZone, McDougal Littell has gathered together all of its activities, interactive online resources, research links, chapter quizzes, and other materials that support its popular middle and high school mathematics textbooks, such as Integrated Math ...more>> Clay Mathematics Institute - Clay Mathematics Institute The primary objectives and purposes of Clay Mathematics Institute (CMI) are to increase and disseminate mathematical knowledge, to educate mathematicians and other scientists about new discoveries in the field of mathematics, to encourage gifted students ...more>> Cálculo Contractivo In Spanish: Nuestro grupo de investigación se ha propuesto compartir conocimientos con aquellas personas que estén motivadas para el estudio de la matemática o que puedan interesarse en conocer métodos no convencionales en Cálculo Numérico ó en áreas ...more>> Clear Educational Solutions - Calvin Leung Product and order information for InstaGraphs, Post-It Notes® printed with a grid for use as graph paper. Also includes a student survey and suggestions for using InstaGraphs as a fundraiser. ...more>> Cleave Books Teacher Resources on Line (TRoL) include downloadable grid paper; T-tiles; dictionary exercises; shapes Bingo; MisMaths, an annotated collection of innumeracy and other math mistakes in news headlines; fact sheets; tables; formulas; a mathematical vocabulary ...more>> CLICAL - Pertti Lounesto; Helsinki Institute of Technology, Finland A calculator-like Windows/DOS computer program for vectors, complex numbers, quaternions, bivectors, spinors, and multivectors in Clifford algebras, intended for researchers and teachers of Clifford algebras and spinors. CLICAL works directly on intrinsic ...more>> Click and Climb: Online Math Tutoring and Homework Help - ClickandClimb.com Online math tutoring and math homework help resource. Professional tutors work with you one-on-one using interactive whiteboard technology and VOIP (Skype) for audio. Tutoring is offered in grades 3-12 at your pace. You'll need a computer with high speed ...more>> Clickmazes - Gilbert, Mitchell An extensive collection of interactive puzzles and mazes organized in the following categories: Maze gallery; Attic gallery; Maze of Life; HexaRoll; Oskar's four-bit mazes; 2D tilt mazes; Colour-zone mazes; 3D tilt mazes; Tilt puzzles; NEWS and RULES; ...more>> The Cliff-Hanger (MSTE) - Nicholas Exner; University of Illinois at Urbana-Champaign (UIUC) A Java simulation of statistics and probability. From where he stands, one step toward the cliff would send poor Homer Simpson over the edge. He takes random steps, either toward or away from the cliff. At any step his probability of taking a step away ...more>> CLIFFORD: A Maple V (Rel. 5.1) Package for Clifford Algebra Computations - Rafal Ablamowicz For PCs. Also available is a version compatible with Maple V R.3 and R.4. Freely available for personal use only. ...more>> Climate Classroom - One Million Acts of Green This curriculum encourages students to analyze the science of global warming and its relevance to current events and their daily lives, through classroom activities, lesson plans, and family and community activities. The One Million Acts of Green Program ...more>> Climate Dynamics, Chaos and Quantum Mechanics - Dr. A. Mary Selvam A theory of everything for chaos, quantum mechanics, and gravity, applicable to macroscale weather patterns and subatomic dynamics as well as turbulent fluid flows. Contents focus on nonlinear dynamics and chaos (fractal geometry), iteration, a cell ...more>> The Clique Algorithm - Ashay Dharwadker A polynomial-time algorithm for finding maximal cliques in a graph with new bounds on Ramsey numbers. ...more>>
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