 SPIMSOW: Swarthmore Summer Project for the Implementation of Mathematical Software on the Web  Bouttenot, Parlikar; Mathematics & Statistics Dept., Swarthmore College & Math Forum
The product of a 1998 summer project investigating current Weboriented mathematical software. The site explores the capabilities of the new Web versions of Mathematica, Maple, and MathView, offering tutorials on configuring the software and creating
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 Spinning to a Rolling Stop  Ivars Peterson (MathTrek)
The underlying mathematics of spinning disks. Spin a coin on a tabletop. As it loses energy and tips toward the surface, the coin begins to roll on its rim, wobbling faster and faster. Toward the end, the coin generates a characteristic rattling sound
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 Spirals of Primes  Bryan Clair, University of Chicago
This page will generate a spiral of numbers, with the primes marked as stars, and the composites as dots. The center of the spiral is marked with an 'X'. Specify the number at the center of the spiral below, and the width (and therefore also the height)
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 Spirals (The Geometry Junkyard)  David Eppstein, Theory Group, ICS, UC Irvine
An extensive annotated list of links to material on spirals of all kinds.
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 Spirograph  Anu Garg
A Spirograph is formed by rolling a circle inside or outside of another circle. The pen is placed at any point on the rolling circle. This applet has changeable colors as well.
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 Sport Science  ESPN Internet Ventures
ESPN videos that "uncover sports' biggest myths and mysteries by using cuttingedge technology to measure momentum, friction and the laws of gravity." Also available from http://espnrise.com/sportscience.
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 Sports Engineering Research Group  Matt Carré, Department of Mechanical Engineering, University of Sheffield (UK)
Research projects, equipment development, teaching and education in pursuit of fundamental questions about impact, friction, the aerodynamics of game balls, sports surfaces such as the traction of cleats and other footwear, and more. See, in particular,
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 Spreading Memes  Cut the Knot!, Alexander Bogomolny
First of a series of interactive columns for MAA Online that use Java applets to simulate a puzzle or mathematical problem, one not stated directly since the applets are intended to be such that the right answer to an as yet unstated problem should be
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 Spreading Rumors  Ivars Peterson (MathLand)
Three people take longer to share their gossip than four people! This curious result arises out of the following mathematical problem: A group of friends love sharing their gossip. Each gossiper initially knows something that no one else in the group
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 Spreading the Word  Keith Devlin (Devlin's Angle)
History of and commentary on early calculus texts. "The first calculus text hit the shelves in 1696. They have been growing steadily in size (if not mathematical content) ever since. That first genresetting volume was Guillaume Francois Antoine de l'Hospital's
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 Spreadsheet Basics  Jan Garner
Finding your way around spreadsheets; entering data; graphing with spreadsheets.
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 Spreadsheets in Education  Baker, Sugden; Queensland, Australia
A new fully peerreviewed electronic journal devoted to the use of electronic spreadsheets, such as Microsoft Excel, in education. The editors invite manuscripts from education professionals who make use of spreadsheets for the benefit of their students.
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 Spreadsheets, Mathematics, Science, and Statistics Education  Erich Neuwirth
Information about spreadsheets with an emphasis on mathematics and statistics education. Spreadsheets in Education: Recommended Books; Papers about Spreadsheets in Scientific Journals and Books; Example Spreadsheets and Projects (mostly Excel 5.0); Further
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 SpreadsheetZONE  Pagos, Inc.
This repository of Microsoft Excel spreadsheet templates contains a category of math learning tools that covers topics such as base system conversion, exponential functions, logarithmic functions, Cartesian coordinates, derivatives, goodness of fit, polar
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 Springer Science Online  SpringerVerlag New York Inc.
SpringerVerlag (offices in New York, Barcelona, Berlin, Heidelberg, Hong Kong, London, Paris, Tokyo, and Vienna) has over 10,000 books in print, with 280 journals and magazines produced each year and over 1,500 new titles released annually to cover the
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 Springing a Physical Surprise  Ivars Peterson (MathTrek)
Consider a weight hanging from a spring, which in turn is suspended by a piece of string from an identical spring attached to the ceiling. Cutting the connecting string would send the weight and the lower spring plummeting to the floor. Now add two "safety"
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 Sprott's Fractal Gallery  Julien C. Sprott, Dept. of Physics, Univ. of Wisconsin
Images from programs and books by the site's author, with information about these books and software packages, and MSDOS software packages available for download. Every day a new fractal image is automatically generated on this page by a variation of
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 Sprouts for Spring  Ivars Peterson (MathLand)
The game of sprouts has a way of growing on you. This twoperson, pencilandpaper game is simple enough that children can play it. Yet its intricacies provide much food for mathematical thought. The players start with a certain number of dots scattered
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 Square/Cube Roots without a Calculator  Math Forum, Ask Dr. Math FAQ
How do you find the square root of a number by hand? How about cube roots?
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 Square of the Hypotenuse  Ivars Peterson (MathTrek)
Some history of the legend of the discovery of the Pythagorean theorem: in his textbook The History of Mathematics, Roger Cooke of the University of Vermont describes how the Babylonians might have discovered the Pythagorean theorem more than 1,000 years
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 Square Root Calculator  Chris Misenheimer
This interactive square root calculator calculates the square root of positive, negative, imaginary, and complex numbers, rounded to seven decimal places. Short articles include "Square roots and area," "Square roots without a calculator," and "What does
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 Square Roots without a Calculator  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about square roots without a calculator, from the divideandaverage technique to Newton's method to the continued fraction algorithm (CFA).
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 Squares and Square Roots, 1100  Math Forum, Ask Dr. Math Common Question
A table of squares and square roots, 1100.
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 Squares in a Checkerboard  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about how many squares or rectangles there are in a checkerboard or in an NxN square.
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 Square Wheel (MatheMUSEments!)  Ivars Peterson (Math Muse for Kids)
A square wheel may be the ultimate flat tire. There's no way it can roll over a flat, smooth road without jolting the rider again and again. Stan Wagon, a mathematician at Macalester College in St. Paul, Minnesota, has a bicycle with square wheels. It's
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 Squaring the Circle  MacTutor Math History Archives
Linked essay covering the problem of squaring the circle in the form which we think of it today, which originated in Greek mathematics: given a circle, construct geometrically a square equal in area to the given circle. This article discusses the history
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 Srinivasa Ramanujan Aiyangar  S.Prasad
A short biography of Ramanujan, with links to related Web pages.
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 Srinivasa Ramanujan  Sociedad Andaluza de Educación Matemática THALES
Biografía de Ramanujan: Presentación; Formación; Trabajo; En Cambridge; Su obra; Bibliografía; Otras páginas de interés
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 SsgtMath  Ricardo Sinclair
Ten to fifteen minutelong whiteboard introductions to Common Core State Standards (CCSS) ideas, geometry constructions, proofs, precollege algebra, college algebra, and more.
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 SStreams: Mathematica  Andrzej Kozlowski, Ed.; eNoteBooks Ltd.
Links to Mathematicarelated books and publications; developer, consulting and training companies; jobs requiring Mathematica; programs and packages to download free or for a fee; Web resources; and a section on skills: people with Mathematica programming
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 Stack Exchange
A "free, communitydriven Q&A" for people studying math at any level, and professionals in related fields. Post to understand mathematical concepts and theorems, share hints on problems, talk about the history and development of math, solve mathematical
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 Standard Deviation, Part 1  Barbara Christopher
Can the standard deviation pick the most consistent set of numbers? or Which city's temperatures vary the least, San Diego or San Francisco? An interactive project in which students use the Internet to find statistical data for the mean, standard deviation,
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 Standard Deviation, Part 2  Barbara Christopher
Do cities closer to the ocean have more consistent temperatures? A followup to Standard Deviation, Part 1. Students use the Internet to gather temperature data from 3 cities; calculate the standard deviation and percentage error of the gathered temperatures;
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 Standards for School Science and Mathematics: Background, Purposes, Goals, Principles  Lynn Arthur Steen, St. Olaf College
A "sidebar" on background of the standards movement in science and mathematics
education prepared for the National Science Foundation's "Indicators" study for 1995. In 1994 Indicators of Science and Mathematics Education. Washington, DC: National Science
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 Standup Mathematician  Matt Parker
Parker uses funny presentations and handson activities to "make people more excited about maths." Watch videos of his comedy routines, including "Skills for bills," in which he introduces the notion of "standard meal units" for calculating each person's
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 Stardust Equations  Keith Devlin (Devlin's Angle)
On Sunday, February 7, at 4:04 PM, a Lockheed Martin Delta II rocket lifted off from Cape Canaveral carrying an unmanned spacecraft about the size of an office desk, having the romantic name of Stardust. If all goes well, on January 15, 2006, the spacecraft
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 Star Grades: The Best Tutor  Star Grades.com
Offers $20/hr online tutoring in multiple subjects, including SAT preparation. Package deals available.
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 StarLogo  Epistemology and Learning Group, MIT Media Lab
A programmable modeling environment for exploring the workings of decentralized systems. With StarLogo, you can model (and gain insights into) many reallife phenomena, such as bird flocks, traffic jams, ant colonies, and market economies. StarLogo is
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 StatApplet  Marcus Kazmierczak
A simple statistics program and a short outline of the underlying mathematics. The statistics applet calculates the sample mean and sample standard deviation, and constructs a 95 percent confidence interval for data values entered.
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 Statbag  Worth Swearingen
A blog repository for statistics educators: "... each teacher should have a bag of tricks. Teachers spend years developing their own favorites. While acknowledging that experience is the best teacher, one purpose of this site is to help teachers develop
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 State Institute of Statistics (SIS)  Republic of Turkey
The agency in charge of collecting statistics for the country of Turkey. Includes tables and charts of key social, economic, and environmental statistics and a dictionary of important statistics and economics terms arranged by subject. Some articles
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 State of the Art Mathematics  Carole B. Lacampagne; U.S. Department of Education
Transforming Ideas for Teaching and Learning: a book that identifies ten ideas for transforming mathematics teaching and learning backed up by research or by promising practical experience. Includes the online document, references, and suggested reading.
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 States.org, the States Inventory Project
The mission of the States Inventory Project is to build a comprehensive resource of infrastructure, initiatives and strategies for networking education, government and the public in each of the fifty United States. Funded by the NSF, it is a joint effort
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 Statiscope  Mikael Bonnier
Statiscope presents summarizing data and descriptive statistical charts. In the applet you can enter data manually or download data over the Internet. Charts included: Distribution, Probability mass, Density, Box plot, Stem & leaf; also other features
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 Statista  Statista Inc.
Statistics and other quantitative data on education, schools, employment, and hundreds of international industries, aggregated from more than 18,000 sources that include the Mendelsohn Affluent Survey, trade publications, scientific journals, and government
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 Statistical Assessment Service (STATS)
STATS is a nonprofit, nonpartisan resource on the use and abuse of science and statistics in the media. Its goals are to correct scientific misinformation in the media and in public policy resulting from bad science, politics, or a simple lack of information
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 Statistical Consultants Ltd  Dion Walker
Data analytics and other consulting services. See, in particular, the New Zealand company's blog, which dates back to 2010 with posts such as "Battle of Britain Casualty Data," "Gretl: A free alternative to EViews," "Life expectancy at birth versus GDP
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 Statistical & Data Analysis Software  NCSS Statistical Software
Statistical analysis in a format that imports and exports all major spreadsheets, databases, and statistical file formats.
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 Statistical Education through Problem Solving (STEPS)  STEPS TLTP Consortium
The STEPS consortium in the U.K. has developed problembased modules to support the teaching of Statistics in Biology, Business, Geography, (Windows) and Psychology (Windows and Mac). The software is freely available to educational institutions, and can
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 Statistical Office of the Republic of Slovenia (Statisticni Urad Republike Slovenije)  Andrej Cedilnik and Tomaz Valantic
The agency that collects statistics for the Slovenian government. Includes Slovenia in Figures, with comparison to other nations, information about the Statistical Office and the laws that regulate its activities, and a catalog of publications which
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