 Snow Activities  The Teel Family
A site that includes snow science (how to study snow crystals) and snow art (cutting sixsided paper snowflakes and a "selfsticking" snowflake).
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 Snow Day Calculator  David Sukhin
Enter a ZIP code and number of school days already canceled there due to inclement weather, and the Snow Day Calculator predicts the probability of an early dismissal or no school the following day. Sukhin originally developed his predictive calculator
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 Snowdays  Popular Front
Make your own snowflakes online: point and click to cut anywhere around or inside the folded piece of virtual paper. Preview the unfolded results in real time; when ready, save your design to the searchable gallery, where you may view and download plans
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 The Snowflake Curve, Perimeter and Area  Don Cohen (The Mathman)
Young children start with an equilateral triangle, then go 1/3 of the way along each side, then add a smaller equilateral triangle, protruding out from every side to get the next figure. A sample problem with answers from Chapter 4 of Don Cohen's worksheet
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 Snowflakes and Stars  Ignacio Dayrit
Graphic images of snowflakes with folding instructions to make from paper.
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 SNOW Kids  Centre for Academic Technologies, University of Toronto
Special Needs Opportunity Windows (SNOW) is a pilot project aimed at developing ways for children with special needs to access curriculum materials electronically. The Library has children's books and magazines in English and French, a video room, and
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 Soap Bubbles  Ron Hipschman; The Exploratorium
Why does a bubble form a sphere? Why not a cube, tetrahedron, or other geometrical figure? This site from San Francisco's Exploratorium provides information on the shape of bubbles and what happens when bubbles meet, with formulas for longlife bubble
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 Sociological Foundations Supporting the Study of Cultural Diversity  Hugh Mehan, Univ. of California at San Diego
In order to understand the barriers to educational equality faced by lowincome cultural and linguistic minority youth, we need to understand the ways in which social class and ethnicity interact with language and culture. This paper examines various
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 The Socratic Method: Teaching by Asking Instead of by Telling  Rick Garlikov
An example and explanation of how to use students' (including young children's) inherent reasoning abiltiy to guide them gently and easily into an understanding of difficult ideas.
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 SoftSchools.com  Mani Gudavalli
Free math worksheets and interactive online games for practicing times tables, adding, subtracting, telling time, and more. Organized into prek, kindergarten, grades 12, grades 34, grade 5, measurement, and fun games.
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 Software  Bill White
These Flash apps provide online practice deriving some unknown property of a figure given its other measures. Find the area of a trapezoid given its two base lengths and height; find one of its bases given its area and height; find its height given its
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 Software by Al Jarnow  ProtoZone Interactives
Webbased interactive software excerpted from pattern exhibits at the Long
Island Children's Museum, the National Museum of Science and Industry (London),
and the Brooklyn Childrens's Museum. Introductions to art and math with many patternmaking
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 The Solar System and Space Technology  Eddie B. Rose Jr.  YaleNew Haven Teachers Institute
A unit that presents a modularized, individualized problemsolving scientific/mathematics packet that can be adapted for grades K12. The contents focus on space exploration and its relation to science and mathematics. The curriculum is
design to integrate
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 The Solar System (SMILE)  Fred J. Schaal, Lane Tech High School
A lesson designed to make use of concentric circles and angles in excess of 180 degrees to construct a sketch of the nakedeyevisible planets of the Solar System (polar coordinates). From the Geometry and Measurement section of a collection of almost
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 Solve for n  NASA Lewis Learning Technologies Project
Solve for n: 3/n = 7/12. A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test.
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 Solve for y  NASA Lewis Learning Technologies Project
Solve the following for y: 12y  16 = 20y. A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test.
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 Solving Equations  Don Cohen (The Mathman)
Make equations or open sentences true by guessing. Equations with X's on both sides; quadratic equations (11 ways to solve a quadratic equation); using balance pictures to solve equations. Sample problems with some answers from Chapter 8 of Don Cohen's
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 Some Golden Geometry  Rashomon (K. Wiedman)
The Golden Mean is a ratio that is present in the growth patterns of many things  the spiral formed by a shell or the curve of a fern, for example. This page (also found at http://tony.ai/KW/goldengeom.html) gives instructions for constructing the Golden
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 Some Puzzles I've Solved  Sidney Cadot
Notes and observations on the games Peg Solitaire, the Bedlam Cube, the Bart Salters Puzzle, a dominolike puzzle by Rubik. Also, a text list of solutions to the 24 Game.
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 Songs for Teaching  S. Ruth Harris, LLC
Lyrics to music that teaches or reinforces math facts and concepts, including addition, subtraction, multiplication, division, algebra, and geometry. Some songs have links to sound files as well.
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 Songs that Teach Math  Twin Sisters IP, LLC
Songs for learning numbers and counting, addition, subtraction, multiplication, and division, available as mp3 singles or "Rap with the Facts" albums. More music available from http://www.smartvlearning.com/musicdownloadsmathcat.html
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 Sorting and Analyzing (SMILE)  Vickie Townsend, Crown Fine Arts Community Academy
A K12 lesson designed to teach students to sort, compare, and analyze through exploring, observing, and examining concrete objects, and to recognize a bar graph. From the Patterns and Logic section of a collection of almost 200 single concept lessons
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 Southeast Regional Climate Center  Water Resources Division, South Carolina Department of Natural Resources
Home site for CIRRUS, the Climate Interactive Rapid Retrieval System, an educational medium that provides economically and environmentally important climatic information. The system gives students the opportunity to observe and analyze the weather on
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 Southwest Educational Development Laboratory (SEDL)
The regional education laboratory serving Arkansas, Louisiana, New Mexico, Oklahoma, and Texas. Conducts applied research and development, delivers training, and provides technical assistance to K12 educators and decision makers. Topics: Improving Classroom
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 SpaceBric
Tetrahedral linking blocks and design software using that shape. Download trial versions of the software or get the fullyfeatured versions with a registration key. Blocks may be purchased on line as well. SpaceBric also offers school fundraising and
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 Space Day 2003  Celebrating the Future of Flight
Space Day 2003 honors the past 100 years of aviation and aerospace accomplishments. On May 1, 2003, teachers, students and space enthusiasts around the world can participate in Cyber Space Day, an interactive Webcast entirely devoted to science, space
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 SpaceShape  Matt Storz
SpaceShape is a Windows95 program that allows various 3D shapes to be created and then flattened so that a pattern can be printed to make a model of the 3D shape. Various 3D shapes are supplied with the program (octahedron, dodecahedron, icosahedron,
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 Spark! Learning Lab  Putnam Museum
This permanent exhibit at Davenport's science museum features a gravity wall, Bernoulli blower, SMARTboard technologies, and other handson exhibits for exploring the science, technology, engineering and mathematics (STEM) of electrical circuits, construction
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 SPA Software
A U.K.based software company, makers of educational software in several subjects including mathematics.
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 Spatial Intelligence and Learning Center
The Spatial Intelligence and Learning Center (SILC) researches spatial learning and develops educational programs and technologies. Every month, the SILC showcase highlights research by different members, who include cognitive scientists, psychologists,
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 Special Interest Groups: American Educational Research Association (AERA)  College of Education, Arizona State University
Index and complete list of AERA SIGs, which provide a forum within AERA for the involvement of individuals drawn together by a common interest in a field of study, teaching, or research when the existing divisional structure may not directly facilitate
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 Splash Math  StudyPad, Inc.
Free adaptive, interactive worksheets and games of math problems for grades 15. Aligned to the Common Core Standards (CCSS), these apps for the iPhone and iPad also email weekly progress reports that highlight strengths and weaknesss. Also available
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 Spreadsheet Math  Sustainablearning, Inc.
Spreadsheets as laboratories where students can "become a scientist who poses a question, builds a model, collects data, and asks 'What if ...?'" Freely downloadable Excel files that emphasize student choice, challenge, and creativity range from place
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 Sproglit  Sproglit LLC
Creators of "Kyle Counts" and other resources based on the Math Arrow, a zigzag arrangement that uses shape and color to reveal properties of the natural numbers 1100. Blog posts, which date back to February, 2013, have included "What We Learn from
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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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 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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 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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 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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 Statistics Canada  Ottawa, Ontario, Canada
Canada's national statistical agency, which is required to collect, compile, analyse, abstract and publish statistical information on virtually every aspect of the nation's society and economy. Programs are organized into three broad areas: demographic
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 The Statistics of M&Ms (SMILE)  Charlotte Goldwater, Kenwood Academy
A lesson for grades 112 designed to teach students to analyze the contents of a bag of M&Ms mathematically. From the Graphs and Visuals section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning
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 The Statistics Teacher Network  STN  Jerry Moreno, Editor; American Statistical Association (ASA)
A newsletter (beginning Winter 1997) for teachers including book reviews and articles on new teaching ideas, methods, and tools. Initial articles on: Review of ActivityBased Statistics; A Quick Introduction to the Statistical Capabilities of the TI83
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 STATUSA/Internet  U.S. Department of Commerce
Part of the Economics and Statistics Administration of the the U.S. Department of Commerce. An information service providing economic, business, social, and environmental program data produced by more than 50 Federal sources; hundreds of thousands of
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 Stellated Icosahedra  Roman Maeder
An excerpt of an article published in Mathematica in Education. There are 59 stellations of the icosahedron; these pages contain various images of them, ordered by increasing circumradius, and some background information. The metric properties and graphics
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 STEM: Science, Technology, Engineering, Mathematics  Center on Instruction at RMC Research Corporation
Webinars and other resources for mathematics instruction and assessment: research metaanalyses and summaries, practitioner guides, tools, examples from the field, standards and assessments, and professional development modules, training materials, and
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 STEPS Online Tutoring  TCYonline.com
TCYonline.com provides oneonone live online math tutoring and homework help for grade K12 students. The service offers test prep for the SAT, ACT, GRE and GMAT and State Level exams 24x7, round the year. TCY also provides math education consulting
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 Steve Leinwand
Publications, presentations, blog, and more by a Principal Research Analyst at American Institutes for Research (AIR). Freely download articles such as "Moving Mathematics Out of Mediocrity," "High Leverage Mathematics Instruction Practices," "Making
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 Steven Strogatz  The New York Times Company
Mathematics from an adult perspective  from the basics of math to the baffling  by Steven Strogatz, a professor of applied mathematics at Cornell University. This New York Times series is not meant to be remedial, but rather to give readers a better
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 The STIMULUS Project  Department of Applied Mathematics and Theoretical Physics, University of Cambridge
STIMULUS gives Cambridge University students the opportunity to assist experienced teachers in local schools, where they help weekly in mathematics, science, computing, information technology, design technology, and personal, social & health education
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 Strategic Directions in Computer Science Education  Allen B. Tucker, Bowdoin College, Editor
From ACM Computing Surveys, 1996. Abstract: This report identifies major issues and challenges in computer science education across a wide range of institutions. It includes suggestions for improving the quality and effectiveness of computer science and
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