- What's the Problem? Geometry & Art through the Ages - Indianapolis Museum of Art
An exhibit exploring how some artists have used geometry as a creative tool. The site is divided into three topics: lines, polygons, and volume. Also provided as links from the left sidebar are a glossary and a list of references for further reading.
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- When Am I Going to Use This? - Column Five Media
This graphic plots popular career choices on axes of "number of math concepts" and "median average salary" to illustrate the basic math, algebra, geometry, or trigonometry required of athletes, cosmetologists, carpenters, pilots, psychologists, lawyers,
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- Which Countries Are Most Like Stars? (Math Chat) - Frank Morgan, MAA Online
Which countries in the world have a point such that the shortest line from
every other point in the country stays inside the country? (ignore mountains and valleys). Mathematicians call such countries starlike. Are there any countries such that the shortest
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- Which Polygon Sides are Parallel? - NASA Lewis Learning Technologies Project
Which of these line segments are parallel? Two adjacent sides of a triangle; Two adjacent sides of a pentagon; Two opposite sides of a rectangle; Two radii of a circle. A diagram and a detailed answer are provided. From NASA's 9th Grade Math Proficiency
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- Why is the Area of a Circle Pi*r^2? - Eva Thury
An explanation of the formula for the area of a circle, based on "slicing" and rearranging the circle.
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- Why It's Hard to Fold a Triangle in Half (Math Chat) - Frank Morgan, MAA Online
For a circular piece of paper, the lines along which you can fold it "in half" (with half the area on each side) are precisely the lines through the center. What other shapes work the same way? This works for lots of shapes, such as rectangles, parallelograms,
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- Why Not Geometry? - Cut the Knot!, Alexander Bogomolny
An exploration of the validity of teaching algebra at the middle-school level, testing, mathematics ewducation reform, the goal of education, and a suggestion that geometry might be a more important starting point.
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- Wild About Math! - Sol Lederman
Math posts, which date back to October, 2007, have included "10 ways to get wild about Math," "How to square large numbers quickly (part 1)," "26 tips for using learning styles to help your kids with Math," "The algebra of cross-multiplication," "Flexagon
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- Wilder's Fourth Grade Math and Science - Jim Wilder
Wilder's blog, which dates back to July of 2008, has included posts such as "Pumpkin Investigation/Family Math Night," "Spuds, Velocity, & Central Tendency," "predict the pattern," "codes and the tricky elevens," and "thinking about patterns." Wilder
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- William's Home Page - William Gibbs
A collection of activities that use simple materials to help students explore mathematical concepts. Topics include: shapes and patterns made from paper circles; geometrical activities with magic paper; window patterns from geometrical shapes; where there
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- Wilson Stothers' Geometry Pages - Wilson Stothers, University of Glasgow
A guide to the various geometry topics on Stothers' pages, including Euclidean, affine, projective, inversive, and hyperbolic geometries, and the Klein View of geometry. These pages began as an experiment in teaching projective conics using Cabri to provide
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- window into a math classroom - Sadie Estrella
A snapshot-driven blog subtitled "a glimpse into a math classroom once a day." Estrella's posts, enlivened with pictures of her students and of their work on classroom dry-erase whiteboards, have included "Trying Math Meta-Cognition," "More Arguing about
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- A Winning Division - Ivars Peterson (MathTrek)
A farmer plans to divide a triangular piece of land evenly between his son and daughter. Because he wants to be scrupulously fair, he would like the two pieces to have not only equal areas but also equal perimeters. Where should he draw the line? This
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- Wired Math - Dean Murray, Soo Go, Jamie Pearson; University of Waterloo (Canada)
A free website created for students and teachers by a teacher for the University of Waterloo. The online games, drills, "follow up exercises," and answers
address topics common to middle grades on every continent. Also availalble from http://www.wiredmath.ca/
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- WisWeb - Freudenthal Institute
The Freudenthal Institute, a Dutch organization for secondary education, provides applets to support/extend the math instruction of students 12 years and older. For this site, WisWeb recommends versions 5 or higher of Internet Explorer, Netscape or Opera.
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- wNetSchool
A resource for K-12 teachers, with some information for adult education teachers (i.e., the GED exam). Subscribing to the site is free, but one may also enter without subscribing. wNetSchool provides lesson plans centered around the Internet or educational
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- Woodlands Math Zone - Woodlands Junior School, Kent, U.K.
Pages aimed at 7-11 year olds. Interactive games for math practice are organized under the following topics: Number Skills; Shape & Space Skills; Mental Maths; Preparing for Sats; Educational Games; Times Tables; Measures/Time; Worksheets; Understanding
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- Word Problems for Kids - St. Francis Xavier University; Canada's SchoolNet
Word problems by level for students in grades 5-12, which can help improve problem-solving skills. A hints link is available for difficult problems. Complete solutions are available upon request to teachers with e-mail addresses. From students, principals,
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- Word Problems III - Energy Conservation Enhancement Project
Perimeter, area, and volume measurements; shading the exterior of a home. Math objectives: 1. Use correct formulas to compute geometric measurements. 2. Complete a variety of word problems involving three geometrical functions: area, volume, perimeter.
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- Worksheet Works - WorksheetWorks.com
This site generates high quality PDFs of worksheets with the flick of a few checkboxes. Just specify level of difficulty, range of numbers, font size, or other parameters.
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- Workshops - ActiveMath, Inc.
Full-day, hands-on workshops for teachers of grades 3-12, generally held on Saturdays in the Chicago area and designed to take math out of the classroom. Workshops include Math at the Field Museum, Math at the Art Institute of Chicago, Math & Gaming
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- Would You Rather? - John Stevens
Choose between the two apparently equivalent choices — and justify your selection with reasoning: "Would you rather ... run the circumference of the circle OR perimeter of the rectangle? be given 100 grams of new nickels OR 220 grams of new dimes?
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- Wright Flyer Teachers' Lounge - National Aeronautics and Space Administration
Lesson plans include Wind Tunnel Data (lift and drag); Know all the Angles (does pitch affect lift?); Watch Your Altitude (the three axes of rotation and the movements of roll, pitch, and yaw); Getting the Wright Pitch; and Up, Up and Away (compare the
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- Write Math with the Math Forum - Math Forum
A standards-aligned, grade-specific program to improve math problem solving. Engaging problems adapted from the Problems of the Week program have been correlated to state standards, math topics, and widely-used textbooks. A trial membership gives you
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- XLMath SAT Prep: eXtreme Learning for the Math SAT Test
XLMath is an online service designed to improve your score on the math portion of the SAT. It features over 300 SAT-type questions with changeable numbers, for practice; timed tests to simulate the actual SAT experience; and record-keeping features so
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- XP Math - Tak L. Hui
Features include free materials designed to excite learners in mathematics and technology, a free eBooks
library, a collection of math sites, a database of mathematical careers, an interactive math games league and an active forum.
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- XPress Formula Editor & Problem Solver - HALOMDA Educational Software
A formula editor and symbolic calculator that enables Graphical WYSIWYG editing of math expressions, drawing graphs, and performing algebraic transformations. Expressions can be copied into Word and solved numerically/symbolically step by
step. For
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- Yahooligans! School Bell: Math - Yahoo
Yahoo's kids' guide to math sites including topics: Games and Puzzles, Geometry, Homework Help, Just the Facts, Mathematicians, Measurements, and Real World Math.
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- Young Engineers - The Decade Group
Enrichment courses for children and teenagers using LEGO and K'nex. Sessions such as Big Builders, LEGO Challenge, and GaliLEGO teach basic and complex mathematics, introduce famous scientists, and demonstrate powers and principles of physics. Based in
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- Your Mathematics Society - ChatArea.com
A chat area/forum for all mathematics questions. General mathematics, algebra, calculus, geometry/trigonometry, statistics, calculators, and history of mathematics are covered.
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- Your Online Exchange to Additional Math Solutions - a-maths.com
Tutoring, lessons, and tips for learning math; fun math topics; a marketplace for selling your used textbooks; and bulletin boards for discussion. Designed for students preparing for the GCE 'O' Level Additional Mathematics examination, based on the newly
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- Zebragraph - Jonathan Choate
Download Choate's conference speeches, lecture notes, and other resources such as his Exeter courses and talks. "Enriching the Traditional Geometry Curriculum Syllabus" features the Problem of Regiomontanus. Investigations include the tetrahedral geometry
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- Zero-Knowledge Proofs - John Scammell
"Random thoughts about teaching math" from a high school math consultant who taught math for 18 years prior. Scammell's blog posts, which date back to May, 2010, have included "Lecture Method vs. Peer Instruction," "Mozart’s Dice Game," "Let the Kids
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- Zimaths - University of Zimbabwe
An electronic maths magazine with clever, amusing articles written to supplement the resources available to Zimbabwean students, most of whom do not have access to extra-syllabus information. Features include: How number plates and ISBNs work; Statistical
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The Math Forum is a research and educational enterprise of the Drexel University School of Education.