 Revision Universe  Arnav Rawat
Downloadable worksheets with questions on cumulative frequency; line graphs; mean, mode, median and range; pie charts; curved graphs; expanding brackets; graphical solution of equations; ratio; trial and improvement; area and perimeter; density, mass
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 The Ri Christmas Lectures  The Royal Institution of Great Britain
Register to watch the demonstrationpacked, funfilled videos that have formed a part of the British Christmas tradition for generations: "The natural history of a sunbeam," by George Porter; "Mathematics into pictures," by Christopher Zeeman; "Crystals
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 Right Brain  Tom Biesanz, Mister Numbers
Biesanz offers a system for learning times tables through worksheets and a CD. The site offers sample worksheets as well as videos that give an experience of the visual patterns in numbers.
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 Rinus Roelofs
Geometric sculpture, animation, structures, and "rhinoceros" (knots) by Roelofs, who exhibited as part of the Escher Centennial celebrations. After studying Applied Mathematics at the Technical University of Enschede (Netherlands), Roelofs earned a degree
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 Robotic Navigation with Constraints  J. A. Sethian
A paper and movie on robotic navigation. Finding the Shortest Path: The equation that describes the arrival time of this expanding front as it depends on the possible speed at any point and direction is the Eikonal equation. The fast marching method is
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 RU4Math
Games and events for elementaryaged students from Pulaski and Montgomery counties, and Radford City schools, who participated in the RU4Math Fest of March 22, 2003, held at Radford University. Shockwave games about logic and simple equations, currency
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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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 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 Prep Plan  Wendlink
Free SAT study content including streaming video, a custom study plan creator, and many practice problems.
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 ScienceMakers Video Archive  The HistoryMakers®
Thousands of stories from life oral history interviews of dozens of contemporary African Americans at the forefront of science, technology, engineering and math (STEM): Shirley Ann Jackson, chairman of the Nuclear Regulatory Commission (NRC) and president
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 Science Montana  Montana State University Extended University
Connecting Montanans more closely with the science happening in Yellowstone National Park, Glacier National Park, and other rare natural resources in the Big Sky State. This portal for Montanarelated science, technology, engineering, and math (STEM)
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 The Science of NFL Football  National Science Foundation (NSF)
This 10part series explores the science behind football. Running about four to five minutes in length, each video features an NSFsupported scientist explaining a selected scientific principle, while athletes from the National Football League (NFL) describe
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 The Science of NHL Hockey  National Science Foundation (NSF)
This 10part series explores the science behind hockey. Running about four to five minutes in length, each video features an NSFsupported scientist explaining a selected scientific principle, while athletes from the National Hockey League (NHL) describe
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 Secret Millionaires Club  A Squared Entertainment LLC
Lessons, webisodes, and prime time specials that use reallife situations to teach young people how to succeed in life and in business. See, in particular, the free financial literacy classroom materials available through the Learn and Earn promotion.
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 Shadow Con  Champagne, Zak; Flynn, Mike; and Meyer, Dan
A teacherled mini conference hosted during the twilight hours of the 2015 annual meeting of the National Council of Teachers of Mathematics (NCTM) in Boston, MA. Shadow Con's six speakers each offered "a provocative call to action," with subsequent local
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 Shedding Light on the Subject: Function Models of Light Decay (iMath Investigations)  Illuminations; National Council of Teachers of Mathematics (NCTM)
An online, interactive, multimedia math investigation in which students develop and analyze exponential models for the behavior of light passing through water. Accompanying video clips show the iMath in action in real classrooms.
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 Siemens STEM Academy  Siemens Foundation
The Siemens STEM Academy provides professional development to educators as they cultivate junior scientists who will pursue careers in science, technology, engineering, or mathematics (STEM). Opportunities include an annual STEM Institute; interactive
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 Similarity  Project MATHEMATICS!, California Institute of Technology
A videotapeandworkbook module that explores a basic topic in high school mathematics in ways that cannot be done at the chalkboard or in a textbook. Scaling multiplies lengths by the same factor and produces a similar figure. It
preserves angles and
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 Simons Foundation
This private foundation advances the frontiers of research in mathematics, theoretical computer science, and theoretical physics. Simons Foundation grants have established postdoctoral fellowships, promoted collaboration between researchers, created
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 Simply Statistics  Leek, Jeff; Peng, Roger; and Irizarry, Rafa
Biostatistics professors Leek, Peng, and Irizarry "are fired up about the new era where data are abundant and statisticians are scientists." Their blog, which dates back to September, 2011, has included posts such as "Precog and stats," "Kindle Fire
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 Sines and Cosines, Part 1 (Periodic functions)  Project MATHEMATICS!, California Institute of Technology
A videotapeandworkbook module that explores a basic topic in high school mathematics in ways that cannot be done at the chalkboard or in a textbook. Sines and cosines occur as rectangular coordinates of a point moving on a unit circle, as graphs related
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 Sines and Cosines, Part 2 (Trigonometry)  Project MATHEMATICS!, California Institute of Technology
A videotapeandworkbook module that explores a basic topic in high school mathematics in ways that cannot be done at the chalkboard or in a textbook. This program focuses on trigonometry, with special emphasis on the law of cosines and the law of sines,
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 Sines and Cosines, Part 3 (Addition formulas)  Project MATHEMATICS!, California Institute of Technology
A videotapeandworkbook module that explores a basic topic in high school mathematics in ways that cannot be done at the chalkboard or in a textbook. Animation relates the sine and cosine of an angle with chord lengths of a circle, as explained in Ptolemy's
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 SMARTBoard MiniMovies  Jamie Tubbs
Enhance your SMARTBoard Notebook presentations with these minimovies, which are simple Flash animations. Minimovie topics include: Alphabet Geometry (angles, similar figures, symmetry, transformations, tessellations), Everything Geometry (geometry basics,
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 Software and Animations (The Geometry Junkyard)  David Eppstein, Theory Group, ICS, UC Irvine
An extensive annotated list of pointers to specialized software, Java applets, video sequences, and other forms of interactive or animated geometry.
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 Software Carpentry  Software Carpentry
Basic computing skills for scientists through selfpaced online instruction or short, intensive workshops ("boot camps" at universities and research facilities in the US, UK, and Canada). See, in particular, the free outlines and video lectures on MATLAB,
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 The Southwest Center for Arithmetic Geometry  Romyar Sharifi, Principal Investigator
In this intensive fivedaylong school, advanced graduate students work closely with senior faculty and postdoctoral fellows — not as individual researchers presenting their work in relative isolation, but in highly participatory, extended courses
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 Space Time Travel  Ute Kraus and Corvin Zahn (Theoretische Astrophysik Tübingen)
Black holes and travel at nearly the speed of light: Visualization of the theory of relativity. Online papers, images, movies and paper models. English version of the German site.
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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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 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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 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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 Statistics: Unlocking the Power of Data  Lock, Robin; Lock, Patti Frazer; Morgan, Kari Lock; Lock, Eric F.; and Lock, Dennis F.
Companion materials for the Wiley textbook Statistics: Unlocking the Power of Data. See in particular StatKey, JavaScript for descriptive statistics and graphs, bootstrap confidence intervals, randomization hypothesis tests, sampling distributions, and
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 STEM Concept Videos  Teaching and Learning Laboratory, Massachusetts Institute of Technology
Concept "vignettes" for first and secondyear undergraduate engineering students to watch: conservation of mass, latent heat, electric potential, flux and Gauss' Law, motion, contaminant fate modeling, curl, divergence, enzyme kinetics, gradient, equilibrium
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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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 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
Research, teaching, publications and more by Strogatz, Jacob Gould Schurman Professor of Applied Mathematics at Cornell University. Best known in the academia for his 1998 Nature paper on "smallworld" networks, which he coauthored with his former student
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 The Story of Pi  Project MATHEMATICS!, California Institute of Technology
A videotapeandworkbook module that explores a basic topic in high school mathematics in ways that cannot be done at the chalkboard or in a textbook. Although pi is the ratio of circumference to diameter of a circle, it appears in many formulas that
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 Stuck on Homework  Royle, Helen; and Watts, Teresa
Sample selftest exam questions and maths video tutorials presented by an experienced maths teacher. Subscribe for full access to hundreds more, as well as a digital whiteboard and other tools.
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 Studio 4 Learning Math  Studio 4 Networks Inc.
Free online videos that explain topics in algebra, basic math, calculus, differential equations, geometry, prealgebra, precalculus, statistics, and trigonometry. Join Studio 4 Learning's Tutor Corps to share videos of your own.
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 StudyBeat: Math  StudyBeat
Educational video clips on topics in highschool mathematics, including algebra, basic math, calculus, differential equations, geometry, prealgebra, precalculus, statistics, and trigonometry. Subscription required; sample videos available.
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 Studygeek.org
Lessons, video lessons, formulas, examples, and definitions for learning geometry, algebra, trigonometry, calculus, and statistics.
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 Taking a Workshop or Course  Annenberg Media
Workshops and courses appropriate for preservice and inservice teachers, administrators, reformers, and policymakers. Supplemental video programs called teaching practices libraries are also availablethey give a "flyonthewall" view of real teachers
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 TareasPlus
Videos de lecciones a frente de una pizarra digital, narrado en español. Variando en duración, los asuntos de matemática incluyen aritmética, álgebra, trigonometría, precálculo, cálculo diferencial,
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 Tarrou's Chalk Talk  Rob Tarrou
Hundreds of instructional videos, most less than thirty minutes long: geometry, matrices, factoring polynomials, trigonometry, precalculus, calculus, AP Statistics, TINspire calculators, and more. Tarrou, who has taught math at St. Petersburg (FL) High
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 The Teachers Workshop  Project MATHEMATICS!, California Institute of Technology
A videotapeandworkbook module that explores a basic topic in high school mathematics in ways that cannot be done at the chalkboard or in a textbook. Excerpts from a twoday workshop held in midAugust 1991 for teachers who had successfully used Project
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 TeacherTube  TeacherTube, LLC.
Videos of, by, and for teachers. See, in particular, the math channel of this online community for sharing instructional videos. TeacherTube provides teachers, schools, and home learners an educationally focused, safe venue to upload, tag and share videos
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 Teaching and Learning About Decimals  Steinle, Stacey and Chambers; Univ. of Melbourne, Australia
A resource for teachers that explains the mathematical, psychological and pedagogical ideas needed to teach students to work confidently with decimal numbers. Contents include: Background (main ideas, what learners find hard); Case Studies (video interviews
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 Teaching and Learning Math  Trent Tormoehlen, Franklin Community High School, Franklin, Indiana
The author uses this blog to muse on the art of teaching math and to organize math educational material such as instructional algebra videos that he has created with mimio. View his pages on Algebra I instruction, including Solving Quadratic Equations,
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 The Teaching Gap  Stigler, Hiebert
A site supporting a book by James W. Stigler and James Hiebert in which they point out that teaching is a cultural activity. "Although there are teachers using extraordinary methods in all cultures, the extraordinary is not what defines most students'
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 Teaching Geometry with Google SketchUp  Bonnie Roskes
3DVinci's resources for teaching geometry with this 3D modeling application include projects of the month, videos, teacher resources and guide, 2D and 3D project books, a blog, geometry tips and projects, and much more. Google originally created SketchUp
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