- American Pi - Lawrence Mark Lesser
Song lyrics by Lawrence Mark Lesser, approximately to the tune of Don McLean's "American Pie." Read a PDF of the Texas Mathematics Teacher article Slices of Pi: Rounding Up Ideas for Celebrating Pi Day, and see Lesser's "mathemusician" page for more lyrics
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- American Regions Math League (ARML)
An annual national mathematics competition. High school students form teams of 15 to represent their city, state, county or school and compete against the best in the from the United States and Canada. The event consists of Team, Power, Individual and
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- American Scholastic Association
Home of the American Scholastic Mathematics Association (ASMA) Annual Math Contest for junior, intermediate, and senior high schools. Read about the contest design and general information; see a list of the year's high performers and their school affiliations;
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- America's Favorite Number (Math Chat) - Frank Morgan, MAA Online
Math Chat invited each reader to send in a number. The most commonly submitted number, with the best explanation of why, wins. Answer: In a tight race between 7 and pi, pi wins by a single vote...
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- The Americas - Mathematics and the Liberal Arts - Todd Hammond
Notes on published articles: a resource for student research projects and for teachers interested in using the history of mathematics in their courses. Many pages focus on ethnomathematics and on the connections between mathematics and other disciplines.
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- AmeriStat - Population Reference Bureau and Social Science Data Analysis Network
Graphical and textual summaries of the demographic characteristics of the U.S. population: marriage and family; population estimates and projections; education, race, and ethnicity; income and poverty; foreign-born population; migration; children; older
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- Amlon Tutors
Private tutoring service based in New York City, covering the NJ-NY-CT area. Math topics covered include: Elementary, Algebra, Geometry, Trigonometry, Pre-Calculus, Calculus, Sequential I, II, II, Statistics.
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- AMOF: The Amazing Mathematical Object Factory - Frank Ruskey
Combinatorial objects are everywhere. How many ways are there to make change for $1 using unlimited numbers of coins of all denominations? Each way is a combinatorial object. AMOF is part encyclopedia and part calculator, a teaching tool that generates
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- Amortization Calculator - myAmortizationChart.com
Online amortization calculator, with definition, schedules, and links to other financial calculators.
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- Amplify U Learning Centre - Ahmed Harb
Academic tutoring in math and physics, with mentoring, and peer networking, for grades 7-12.
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- AMS Bookstore - American Mathematical Society
A searchable catalog of over thousands of books, videos, journals, software and gift items from the AMS and participating publishers.
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- amte - Association of Mathematics Teacher Educators, Math Forum
A mailing list for discussions concerning teaching standards and practices at the K-16 level. Read and search archived messages up through the list's last activity, in September, 2000.
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- amtnys - Math Forum
The general discussion group of the Association of Mathematics Teachers of New York State. Use this service to discuss items of interest to math educators everywhere. Read and search archived messages; and register to post to the discussions.
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- The Analemma -
Bob Urschel, Valparaiso, IN
The figure-8 path that the sun makes in the sky is called the analemma. This site explores the paths of the sun and the earth, with investigations into the effects and the math of their elliptical orbits and earth's tilt, and a summation.
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- Analog Gadgets - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
Java simulations of analog gadgets. Includes an analog device simulation for drawing ellipses, a Peaucellier Linkage simulation, an angle trisection demonstration, a demonstration/essay on cycloids, and applets on geoboards (with a proof of Pick's Theorem)
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- Analysis & Knowledge - Sanford Aranoff
Download data analysis software, such as Patterns, which analyzes and charts trends in stock market using Andrews concepts. See also this former Rutgers University physics professor and current high school educator's thoughts on teaching and help file
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- The Analyst - George Berkeley
A text based on the 1898 edition of the works of George Berkeley, edited by George Sampson, incorporating a small number of changes. Many mathematicians published replies to Berkeley's attack on contemporary mathematical practice in The Analyst. Included
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- The Analytical Engine - John Walker
The mathematician Charles Babbage designed an Analytical Engine, a mechanical precursor to the computer, in the late 1800s. Read historical documents related to the Engine, including Blaise Pascal's account of his mechanical adding machine (in French),
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- Analytic Cycling - Tom Compton
Software that provides technical methods for evaluating and estimating cycling performance and parameters. It makes extensive use of differential equations and advanced numerical methods.
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- Analytic Geometry: Cylindrical Coordinates (Ask Dr. Math FAQ) - Math Forum
A discussion of cylindrical coordinates and their common uses.
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- Analytic Geometry Formulas - Math Forum; Ask Dr. Math FAQ
Analytic geometry (a branch of geometry in which points are represented with respect to a coordinate system, such as cartesian coordinates) formulas for figures in one, two, and three dimensions: points, directions, lines, triangles, polygons, conic sections,
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- Analytic Geometry - Jim Loy
This is a quick introduction to analytic geometry, graphing functions in a coordinate system, that foreshadows the derivative.
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- Analytic Geometry: One Dimension - Math Forum; Ask Dr. Math FAQ
Formulas for analytic geometry figures and concepts in one dimension: points, general quadratic equations, and circles.
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- Analytic Geometry: Polar Coordinates (Ask Dr. Math FAQ) - Math Forum
A discussion of polar coordinates, and formulas for points, directions, translations, rotations, lines, triangles, and conic sections in polar coordinates.
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- Analytic Geometry: Spherical Coordinates (Ask Dr. Math FAQ) - Math Forum
A discussion of spherical coordinates and their common uses.
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- Analytic Geometry: Three Dimensions - Math Forum; Ask Dr. Math FAQ
Formulas for analytic geometry figures and concepts in three dimensions: points, directions, lines, planes, triangles, tetrahedra, general quadratic equations and quadric surfaces, and spheres.
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- Analytic Geometry: Two Dimensions - Math Forum; Ask Dr. Math FAQ
Formulas for analytic geometry figures and concepts in two dimensions: points, directions, lines, triangles, polygons, conic sections, and general quadratic equations.
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- Ancient India's Contribution to Mathematics - Sudheer Birodkar
Algebra and Geometry in Ancient India, where mathematics had its roots in Vedic literature, nearly 4000 years old. Between 1000 B.C. and 1000 A.D. various treatises on mathematics were authored by Indian mathematicians in which
were set forth for the
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- Ancient Mathematics - SunSITE's Vatican Exhibit; Library of Congress
Math history: math and astronomy in the ancient world. Greek Mathematics, Ptolemy's Geography, Greek Astronomy. Scholarship supported science in this world where faith and science were not yet seen as two irreconcilable cultures. Euclid (Elements, Optics);
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- Ancient Writings Revealed! - The Exploratorium
Ancient ideas met modern science at the Exploratorium, San Francisco, CA, on August 4, 2006. Using state-of-the-art scientific tools, once-hidden writings by the ancient Greek mathematician Archimedes were uncovered, revealing evidence of science not
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- ... and Math Tutoring - Stuart Raffeld
This one-on-one tutoring service meets tutees throughout California's West San Fernando Valley, and also tutors online, over-the-phone, and by e-mail. Posts in Stu's blog, which date back to February, 2011, have included "Ten Ways to Improve your SAT
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- Andrew M.H. Alexander
JavaScript by Alexander includes "the gear seer," which shows not just bike gear ratios but gear inches and meters development. Input wheel and tire size to see speed at a given cadence. This bicycle drivetrain visualizer further compares different drivetrains,
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- Andy Norton's Web Page - Dept. of Mathematics Education, Univ. of Georgia
Illustrated essays and explorations of algebra and geometry using various technology, including TI-85 calculators, CBL's and computer software such as Geometer's Sketchpad (with sketches to download), Algebra Expressor, and Excel, by a grad student in
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- The Angle Bisectors - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
A discussion of why the angle-bisectors of a triangle meet at the incenter of the triangle, in several different ways, involving: cevians, the transitivity property of equality, axes of a 2-line, altitudes and orthic triangles, and complex numbers.
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- The Angle Defect of a Polyhedron (Geometry and the Imagination) - Conway, Doyle, Gilman, Thurston; The Geometry Center
The angle defect at a vertex of a polygon is defined to be 2 pi minus the sum of the angles at the corners of the faces at that vertex. What is the angle sum for a polygon (in the plane) with n sides? Determine the total angle defect for each of the 5
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- Angles and angle terms - Mark Motyka, Math League Multimedia
Definitions and illustrations: What is an angle?; Degrees: measuring angles; Acute angles; Obtuse angles; Right angles; Complementary angles; Supplementary angles; Vertical angles; Alternate interior angles; Alternate exterior angles; Corresponding angles;
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- Angles of Reflection - John Benson and P. J. Karafiol
A back-and-forth intergenerational blog on math education, begun in January, 2011, by two Presidential Awardees in Mathematics from the state of Illinois.
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- AngryMath - Daniel R. Collins
Blog by an adjunct math lecturer at Kingsborough Community College who believes that "Math is a battle. It is a battle that feels like it must be fought ...," and for whom "math isn't beautiful or fun, but it is powerful, and that's what we need from
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- Animals & Art - M. Crook
A gallery of fractal images created using Ultra Fractal.
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- Animated Proof of the Pythagorean Theorem - Mark D. Meyerson; Mathematics Dept., U.S. Naval Academy
Starting with a right triangle and squares on each side, the middle size square is cut into congruent quadrilaterals (the cuts through the center and parallel to the sides of the biggest square). Then the quadrilaterals are hinged and rotated and shifted
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- Anisohedral Tilings Page - John Berglund
Tilings and tessellatings with 2-anisohedral and other isohedral tilings. With explanations and a bibliography. Berglund's JavaSketchpad applets include circles in a lattice shape; affine polygons, which extends Napoleon's theorem from a triangle to a
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- Annenberg Institute for School Reform (AISR) - Brown University
The Annenberg Institute develops, shares and acts on knowledge that improves outcomes of schooling in America, especially in urban communities and in schools serving disadvantaged children. Institute Projects: Rethinking Accountability; Building Capacity;
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- Annie's Sketchpad Activities - Annie Fetter
Handouts for activities that incorporate JavaSketchpad, including: making a presentation sketch; investigating the properties of quadrilaterals; the Euler segment; morphing a simple figure to a circle; Napoleon's theorem; drawing a box and its net; and
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- Annotated Bibliography of Software Resources (The Chaos Hypertextbook) - Glenn Elert
An extensive annotated list of software related to Elert's Chaos Hypertextbook. Major categories include: Chaos (Dynamical Systems); Iterated Function Systems (IFS); Lindenmayer Systems; Mandelbrot & Julia Sets; Music; Newton's Method; Terrain &
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- The Annual Maritime Mathematics Competition - Department of Mathematics and Computer Science University of Prince Edward Island, Canada
Consisting of six challenging, high school-level math problems requiring written solutions, this competition seeks to foster interest in mathematics, increase public awareness of mathematics, and encourage students to develop mathematical and problem-solving
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- Annual Pi Day - The Exploratorium, San Francisco, CA
"Founded by the the Exploratorium's own Prince of Pi, physicist Larry Shaw, Pi Day has become an international holiday, celebrated live and online all around the world." Read a brief history of pi; find activities for cutting π and wearing π; and
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- Another Record Prime - Ivars Peterson (MathLand)
This time, it didn't take a supercomputer. The new record for the largest known prime number goes to someone using a Pentium-powered desktop machine. Joel Armengaud, a computer programmer working for Apsylog in Paris, made the discovery on Nov. 13 and
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- Answer Ace - MathSupport Co.
A Windows 95/98/NT math problem solver that helps students learn or review arithmetic, pre-algebra, and basic algebra skills. Students enter specific problems and the software provides answers along with step-by-step help. A free trial is available for
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- anthropic-principle.com - Nick Bostrom
A site on 'Anthropic reasoning', which involves concepts such as probability, objective chance, rationality, and observers. See problems like the Doomsday argument.
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- Antiprism - Adrian Rossiter
A set of programs for generating, manipulating, transforming, and viewing models of polyhedra. Open source, via the MIT license.
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