- All About Ratios - Cynthia Lanius
Activities designed to help students understand the concept of ratios, using the Internet. Activities may also be printed out if computer access is not available. Students are expected to: use multiplication and division of whole numbers to solve problems,
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- All Educational Software: Math Software - Kimball & Wood Enterprises, LLC
Math learning games, math help and software for kindergarten through high school. Educational software to help kids learn addition, subtraction, algebra, geometry, calculus, statistics and more.
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- allmath.com - Arbor Media, Inc.
Math tools (flash cards, a metric converter); games (magic square), and reference pages: biographies, a glossary, the multiplication table, metric conversion factors, and an ask an expert service.
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- All Star Review
A review site designed to help teachers and parents find out about software, audio, video and other educational products before purchasing them. Search for software and other materials alphabetically, by level, or by subject (see Math Audio and Software.)
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- All the King's Digits - Terry Trotter
Challenge: Using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9, and the operations of +, -, x, ÷, sqrt (square root), cbrt (cube root), ^ (raise to a power), and ! (factorial), along with grouping symbols, write expressions for the counting number 100.
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- Alphabet Geometry - Jamie Tubbs, MisterTeacher.com
Learn about geometry by looking at letters. Included are interactive Flash movies on transformations, angles, and similar letters. Movies on parallel and perpendicular lines are planned.
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- Alphametics - Torsten Sillke
Cryptarithms are puzzles in which letters or symbols are substituted for the digits in an arithmetical calculation. If a cryptarithm uses letters in place of digits, and the letters form words or phrases, the puzzle is an alphametic. J. A. H. Hunter coined
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- alt.algebra.help
A newsgroup for asking and answering to algebra questions.
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- alt.algebra.help - Math Forum
An unmoderated newsgroup focused on algebra. Read and search archived messages; and register to post to the discussions.
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- Alta Vista
A major Web search engine, also offering major categories to browse (Automotive; Business & Finance; Computers & Internet; Health & Fitness; Hobbies & Interests; Home & Family; Media & Amusements; People & Chat; Reference &
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- Alternative Instruction and Alternative, Performance-Based Assessment - Jane Ehrenfeld; Math Forum
Two annotated bibliographies designed to present ways in which assessment can be altered without drastic restructuring of class and curriculum. Some of the articles and books referenced have links to portfolio-based instruction and assessment, and can
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- Alternative Math Club
Interactive practice with problems typically found in Japan: exams for junior high school math, high school math, and college math; and entrance exams for high shool and for university. Also available in Japanese.
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- Alternative or Block Scheduling - Mathematics Education at The Math Forum
The Math Forum's suggested sites on block scheduling, including Web resources, articles and reports, and discussions.
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- alt.math.recreational - Math Forum
An unmoderated newgroup focused on recreational mathematics. Read and search archived messages; and register to post to the discussions.
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- A+ Math
A site developed to help elementary school students improve their math skills interactively, offering: educational math games (learn basic operations and geometry by playing MATHO - bingo and math combined; Hidden Picture; and Concentration), Web flash
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- AMATH - AMATH Systems, Inc.
Software for Building and Reinforcing Foundation Mathematics. AMATH is a simple, self-paced, self grading, computer-aided workbook created to combat the math literacy problem in the U.S. It covers 103 modules of foundation mathematics
including: arithmetic,
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- Amazeing Art - Christopher Berg
Free printable mazes of buildings, ships, ancient monuments, and more. The site features historical essays describing some of the mazes of ancient times, together with maze terminology and tips on drawing mazes. There are also maze products for purchase,
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- The Amazing Abacus - ThinkQuest 1996
An exploration of the abacus. Learn to use the abacus and what it is for, and to speak and write Chinese numerals and formulas.
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- The Amazing ABC Conjecture - Ivars Peterson (MathTrek)
In number theory, straightforward, reasonable questions are remarkably easy to ask, yet many of these questions are surprisingly difficult or even impossible to answer. Fermat's last theorem, for instance, involves an equation of the form x^n + y^n =
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- Amazing Math Tutor San Diego - Sam Mirs
One-on-one in-home tutoring for algebra, trigonometry, geometry, pre-calculus, calculus and college math students in San Diego county. Blog posts, which date back to January, 2013, have included "The 7 Steps to Succeed in Math Tests," "The 3 main Questions
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- An Amazing, Space Filling, Non-Regular Tetrahedron - Peg Cagle and Joyce Frost, Park City Mathematics Institute
The rhombic dodecahedron derives its name from its twelve ("dodeca-") faces, all of which are congruent rhombi, each formed by joining two tetrahedra. In this article, Cagle and Frost explore these related polyhedra, showing how to exploit their space
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- Amby's Math Instruction, Reinforcement, and Learning Activities - Amby Duncan-Carr
Step-by-step tutorials, with auto-scoring quizzes: order of operations, solving word problems, properties of numbers, prime numbers, prime factorization, greatest common factors (GCF), least common multiples (LCM), simplifying (reducing) fractions, changing
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- America Counts - U.S. Department of Education
In 1997 President Clinton issued a Presidential Directive to the Department and the National Science Foundation to work together to devise an action strategy for using Federal resources in support of improving student performance in mathematics. The result
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- American Mathematical Society Committee on Education - E-Math - Web Site of the AMS
The Committee charge, membership, contact information, annual reports for prior years, and links to education pages on the site are available.
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- American Mathematics Competitions - Dr. Walter E. Mientka, Executive Director
The American Mathematics Competitions (AMC) seek to increase interest in mathematics and to develop problem solving ability through a series of competitions for junior/middle (grades 8 and below) and senior high school students (grades 9-12). They include
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- 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 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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- 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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- 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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- 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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- 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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- Analyzing Numeric and Geometric Patterns of Paper Pool (i-Math Investigations) - Illuminations; National Council of Teachers of Mathematics (NCTM)
An online, interactive, multimedia math investigation. The interactive paper pool game in this i-Math investigation provides an opportunity for students to further develop their understanding of ratio, proportion and least common multiple. Students develop
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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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- 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 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 Math Glossary - Math Advantage - Harcourt Brace School Publishers
A K-8 glossary of common mathematical terms, categorized by grade. Each entry has an example, most of which are animated. An "other" section at the end of the alphabet gives tables of metric and customary measurements, time, formulas, and symbols. You
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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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- 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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- 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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