 Saltire Software
Mathematical technology for industry and education. Saltire Software's core technologies are constraintbased interactive geometry systems, symbolic algebra, and optimization, with products for mechanical engineering, mathematics education and layout
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 SAM Learning  SAM Learning Ltd.
U.K. exam revision (review) for A Levels (age 1618), GCSEs (age 1416) and SATs (KS3, age 1114; KS2, age 711; KS1, age 57). Draganddrop exercises and online tests of math knowledge.
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 Sam Loyd Official Site  The Sam Loyd Company
This site is dedicated to introducing Sam Loyd and his puzzles to a whole new generation. Loyd was a famous puzzle inventor in the 1800s, till his death in 1911. Puzzles with answers, descriptions of famous puzzles for sale, FAQs and other information.
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 SAMMO  Sinclair, Nathalie; Murphy, Pat; et al.
Tools for exploring, creating, and doing mathematics. Sinclair's Java applets let middle school students explore appealing mathematical situations not normally included in school curricula while using fractions, ratios, decimal numbers, and other concepts
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 Sampling and the Census  Ivars Peterson  Science News Online
Despite strong support from statisticians, the Census Bureau's plan to increase the use of sampling in the next census has met resistance in Congress.
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 Samuel Arbesman
Research and writings by the author of The HalfLife of Facts. As an applied mathematician and network scientist, Arbesman's delves into the science of science, nature of productivity and prosocial behavior within cities, the structure and function of
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 San Antonio Technology in Education Coalition (SATEC)  Paul Tisdel, Project Coordinator
A mathematics curriculum project funded by the U.S. Dept. of Education to create mathematics lessons that seamlessly and appropriately integrate technology into instruction. Download PDF files on functions in algebra; technologies used include Vernier
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 San Diego Math Tutor  Juan Castaneda
Math Tutor in San Diego. Offering test preparation and help with Algebra, Calculus, Geometry, Trigonometry, and Statistics.
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 San Diego Tutor
A San Diegobased inhome tutoring company, San Diego Tutor offers a Scholarship program for clients who can't afford high school math and science tutoring.
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 The Sands of Time  Troy Jones
The author uses ridges in piles of salt to model geometric concepts. This page features an article (PDF format), PowerPoint presentation, Geometer's Sketchpad file, and textbook reference for a classroom exploration of such concepts.
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 Sangaku  Hiroshi Kotera
Click on the map of Japan to see photographs of sangaku  Euclidean geometry theorems rendered as colored drawings on wooden tablets, and hung in shrines or temples  dating to the Edo period (16031867). Also, learn how to use counting rods, called
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 Sangaku, Japanese Temple Geometry  Tony Rothman, Princeton University
For centuries in Buddhist and Shinto shrines, Japanese have hung wooden tablets containing mathematical problems. Read PDF or PS downloads of a tutorial on the inversion method for solving Sangaku, or of the article "Japanese Temple Geometry," which first
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 Sangaku: Reflections on the Phenomenon  Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
A collection of sangaku problems with Java simulations and complete solutions, preceded by an introductory article that promotes an unorthodox view point on the wonderful phenomenon of Temple Geometry.
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 Sarah Glaz
Teaching, research, books, and articles by the algebraist, ring theorist, and poet. See, in particular, the math poems of undergraduate students and Glaz's own poetry, which includes "Mathematical Modeling," "A Pantoum for the Power of Theorems," "I am
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 sarahmarie belcastro's home page  SarahMarie Belcastro
From one of the authors of Making Mathematics with Needlework: "I seem to have become a topological graph theorist while I wasn't looking. I am also interested in convex and combinatorial geometry, algebraic geometry, topology, algebra, the geometry of
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 The SAT: Aptitude or Demographics?  Glenn Elert
A paper discussing the SAT's validity, coachability, biases, and implications, especially with respect to race and socioeconomic status.
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 SAT Free Math Practice  Roland Mfondoum
Download free SAT prep math worksheets, take autoscoring quizzes online, and watch videos on algebra and functions, factorization, polynomial expression expansion, linear equations and inequalities, quadratic equation solving, numbers and operations,
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 Satlink  Missouri School Boards Association (MSBA)
A monthly national magazine that serves as a guide to educational satellite teleconferences and programs concerning most K12 subjects, including many math areas. These programs can be a source for new information or an additional resource for current
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 SAT Math Pro  Colleen King
Interactive video lessons, timed quizzes, and other instruction for SAT math preparation, categorized into assess, practice, and strategies.
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 SAT Math Section Overview  SATPeer
Overviews of the geometry and algebra found on the SAT. SATPeer also posts articles of standardized testtaking strategies, review guides, and tools.
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 SAT Prep Plan  Wendlink
Free SAT study content including streaming video, a custom study plan creator, and many practice problems.
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 SAT Test Prep  Ivy West
An online interactive SAT course, with animation, sound, live tutor help, and learning games.
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 Saturday Academy
Saturday Academy (SA) "gives kids learning experiences that get them excited about school, help them explore potential careers, discover their intellectual possibilities, and teach them to be lifelong learners." Targeting the youth and profesionals of
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 Savard Software
Windows shareware and freeware, including Master Converter (which converts over 580 units in more than 30 categories, with the ability to add your own units and categories) as well as a program launcher and various desktop utilities.
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 Saxon Publishers, Inc.  Harcourt Achieve
Saxon publishes educational textbooks and other teaching materials for the primary and secondary education markets (Grades K12) as well as for the home study market. The Saxon method of teaching math stresses "fundamentals." Site includes lists of inservices,
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 SCalculate  Sookshma Chetas Softwares Pvt. Ltd.
Key values into the boxes to expand algebra expressions, calculate geometry areas and volumes, and convert weights, distances, time, memory, and other units.
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 The Scale of the Universe 2  Cary and Michael Huang
Use the scroll bar or computer mouse wheel to zoom in and out  from quantum foam to charm quarks to "smallest thing visible to an optical microscope" to the thickness of paper all the way up to Cruithne, the depth of the Mariana Trench, Minecraft World,
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 Scales of Measurement  Niel Brandt
An extensive list of physical and mathematical events and objects in ascending values and orders of magnitude.
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 Scaling Up Innovative Practices in Mathematics and Science  Carpenter et al.
Download a PDF of a research report that clarifies the meaning of the phrase "learning with understanding," describes the nature of successful professional development, and outlines how to scale successful practices. The research by Thomas P. Carpenter,
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 Scenes from a Dynamic Math Classroom  Ihor Charischak
In a dynamic math classroom, "discourse between teacher and students produces engagement and learning." Posts, which date back to July, 2008, include ISTE 2011 Reflections  My presentation," "Crowdsourcing Jr. Classroom Activity," "Supermarkets marketing
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 Scheduling Random Walks  Ivars Peterson (MathTrek)
Among networked computers, some sort of software scheduler must regulate data flow, but proving that a given scheduler not only prevents conflicts but also performs its duties efficiently can be surprisingly difficult. Computer scientists have found that
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 School Match  Public Priority Systems, Inc.
A school research and database service firm that specializes in rating schools (K12) using auditable data for the parent and corporation, including school rating for the parent, realtor, and homebuyer; school choice consultation; counseling services
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 School Restructuring and Block Scheduling  Mabbott, others
Conversations from the Web discussion geometryprecollege. Art Mabbott extends an invitation to teachers who have tried longer class periods to share their results (October 1994). See also Restructuring Time for Math Class, comments, ideas and suggestions
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 School Science and Mathematics Association
The School Science and Mathematics Association (SSMA) is dedicated to improving instruction at all levels in and between science and mathematics by providing leadership in the field. Its primary work and publications address the needs of all of those
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 SchoolsIntheUSA.com  The EI Group
Request free information and application packages from undergraduate programs; compare select colleges based on tuition, location, size of student body, and other criteria; search databases of career profiles and state scholarships; find articles on financial
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 Schools Online (SOL)  Pacific Internet Pte. Ltd.
A Singaporebased searchable resource site dedicated to schools, educators, and students, its mission to provide schools with dedicated Internet access and services enabling schools to optimise the Internet for educational purposes. In addition to cocoordinating
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 SchoolToWork & Certificate of Initial Mastery
 Beauregard Parish (Louisiana) Public Library
Links to sites with information about changing the mission of the public schools from teaching children knowledge and skills to training them to serve the global economy in jobs selected by workforce boards.
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 SchooltoWork (STW)  National STW Learning and Information Center
A system to prepare youth for the high wage, high skill careers of today's and tomorrow's global economy. Using federal seed money, States and their partnerships design the schooltowork system that makes the most sense for them. There is no single model.
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 SchoolTrainer.com  SchoolTrainer.com Ltd.
SchoolTrainer.com provides a wide range of academic coaching services including online tutoring for Math, Algebra, Geometry, Calculus, Trigonometry for all grades. Free homework help and online study materials are provided as well. Flexible rate plans.
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 School Wise Press
California publishers of school profiles for use in choosing schools for your children. The site also provides: educationoriented news, articles, and books; online school comparisons; an askanexpert service with a parent advocate; and editorial responses
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 School Wiz Tutoring  School Wiz
Australian computerbased maths & English tutoring with live support.
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 SchoolWorld Internet Education
A global Internet classroom from Australia for K12 students and teachers, designed to allow schools to participate in a wide range of varied programs and projects (see The Math Decathlon by teacher Mike McGee), to interact with other schools from around
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 Schroedinger's Cash Register  Oliver Baker  Science News Online
A discussion of the application of physics (particle physics, quantum theory, and statistical mechanics) to finance theory, with econophysicists attempting to break ground in Wall Street, and the possible underlying mathematical structure of market behavior.
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 Science Access Project  Oregon State University
A group dedicated to developing methods for making science, math, and engineering information accessible to people with print disabilities. Includes braille representations of mathematical notation, and other resources for blind students.
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 Science and Engineering Visualization Challenge  Science and the National Science Foundation (NSF)
The annual Science & Engineering Visualization Challenge encourages cuttingedge efforts to visualize scientific data.
Cosponsors Science Magazine and the National Science Foundation (NSF) select winners in each of five categories: photographs, illustrations,
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 Science and Mathematics Education: Similarities and Differences  Lynn Arthur Steen; St. Olaf College
Lynn Steen writes on the similarities and differences between the NCTM Standards and those of the National Research Council. Intellectually, the two communities agree on virtually all comparable aspects of their respective standards. But the nature of
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 Science and Mathematics: Using TI Calculators  ThinkQuest 1997
Covering TI81, 82, 83, 85, and 92, links to TI's lists of programs available with each calculator, and a buyer's guide for each machine with comparisons between models. The site includes Internet links and contact information for its authors.
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 Science and Math Initiatives (SAMI)
A database/clearinghouse of resources, funding, and curriculum for rural math and science teachers. List, search by title or description, or browse math resources by category. Originally a project of the Boulder Valley School District, Boulder, Colorado,
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 Science and More  PublicLiterature.org
This site has a section on applied mathematics educational resources. Topics include projectile motion, differential equation solving, collisions, unit conversion, and prime number generation. Most software is
open source.
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 Science Animations  Peet van Schalkwyk
Science and Maths animations done in Macromedia Flash. These animations are free, interactive, 3D and dynamic.
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