- Trigonometry Table - Industrial Press
Tables that give corresponding sine, cosine, tangent, secant, cosecant, and cotangent values for angles 0 to 90 degrees.
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- Trigonometry - Technical Tutoring
Site provides an introduction to trigonometry, includes illustrative examples and exercises in basic trigonometry as well as a summary of the important basic trig identities and formulae.
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- A Trillion Dollars - Jim Loy
Illustrating large numbers: 100, 1,000, and 10,000 vertical lines; imagining a trillion.
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- Trimathlon
Site centered around a book featuring activities from number theory and geometry beyond the realm of the typical school curriculum. The site features a discussion forum, a sample online game (with others promised), and a periodic puzzler with hint.
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- TriMathlon: A Workout Beyond the School Curriculum - A. K. Peters, Ltd.
Companion site to the book TriMathlon: A Workout Beyond the School
Curriculum, by Judith and Paul Sally. Discuss math, the book, or the site with members of the Trimathlon community; explore the current "Periodic Puzzler"; or play one of the Shockwave
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- Triogram Models - Hansen, Kooperberg, Sardy
An electronic version of a paper that introduces the Triogram method for function estimation using piecewise linear, bivariate splines based on an adaptively constructed triangulation. Java applets are included and a PostScript version of the entire paper
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- Trisecting a Line Segment - Robert Styer
Several ways to trisect a line segment using compass and straightedge.
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- Trisecting an Angle - MacTutor Math History Archives
Linked essay tracing the history of the classical Greek problem of trisecting an
arbitrary angle using for the construction only ruler and compass (which is
impossible) - but, failing that, finding some other method.
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- Trisecting the Angle - Steven Dutch; University of Wisconsin - Green Bay
Why is trisecting an angle with a straightedge and compass impossible? Discussion includes several other proofs of impossibility (the largest prime number, the square root of 2, repeating patterns in the plane) and some alternate methods of trisection
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- Trisection Of An Angle - Jim Loy
A discussion of what can and can't be constructed using compasses (for drawing circles and arcs, and duplicating lengths) and straight-edge (without marks on it, for drawing straight line segments).
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- Triumph of the Nerds: A History of the Computer - Robert X. Cringely; PBS Online
A companion Web site for the Public Broadcasting System television special hosted by Robert Cringely, "Triumph of the Nerds: The Rise of Accidental Empires." Learn how youthful amateurs, hippies, and self-proclaimed "nerds" accidentally changed the world.
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- Troublesome Weather Trends - Ivars Peterson (MathTrek)
In the February Bulletin of the American Meteorological Society, Statistician Kevin J. Coakley of the National Institute of Standards and Technology in
Boulder, Colo. argues that ... daily temperatures don’t vary randomly. They generally tend to rise
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- Trouble with Wild-Card Poker - Ivars Peterson (MathLand)
Poker originated in the Louisiana territory around the year 1800. Ever since, this addictive card game has occupied the time and teased the minds of generations of gamblers. It has also attracted the attention of mathematicians and statisticians. The
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- True Learning - Jinhee and Joseph Kim, True-Learning LLC
Early learning curriculum, worksheets and lesson plans. The True Math activities provide an advanced foundation in math for your child with visually intuitive and engaging exercises. Free samples.
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- Truel in the Sun - Ivars Peterson (MathTrek)
Brilliant sunshine bakes a huddled row of ramshackle, weather-beaten buildings lining a dusty thoroughfare. Two gunfighters slam out of a decrepit saloon and stalk toward their posts at either end of the street. Facing each other, they prepare to draw
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- Truncated Octahedron Blocks - Hop David
A discussion of a three-dimensional tessellation that may make a good bridge between the rectangular solid tessellation and the octa/tetrahedral tessellation.
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- The Truth About Math Standards and Information-Age Math Reform - Bill Quirk
An anti-reform site offering a critical analysis of the NCTM Standards and TERC math.
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- The Truth Tree's Math and Logic Board - Bob Scott, Ron Savori
A collection of math and logic problems, from Pascal's Pizza Parlor and Leaning Ladders to The Old Lady and the Eggs and The Rickety Table Disaster. Register to solve these and other problems and compete with other visitors to The Truth Tree.
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- TSM-4: 'Using the Internet for Mathematics' - Oundle School, Peterborough, UK
A one-day conference for teachers held 11 May 1998 at Oundle School, Peterborough, UK. Technology for Secondary and College Mathematics (TSM) is a teacher training initiative based at Oundle School. Online Workshops: "How to download text and images off
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- TSPBIB (Traveling Salesman Problem) - Pablo Moscato
A comprehensive listing of papers, source code, preprints, technical reports, etc., available on the Internet about the Traveling Salesman Problem (TSP) and some associated problems such as Fractal TSP Instances and VRP Instances, with links to software
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- TS Quasigroups (Catalogue of Algebraic Systems) - John Pedersen, W. Edwin Clark; Dept. of Mathematics, University of South Florida
Definition, examples, and references about TS Quasigroups. Links to related terms in the Catalogue.
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- TTC (Tools of Tensor Calculus) - A. Balfagón, P. Castellví, X. Jaén
A Mathematica package for doing tensor and exterior calculus on differentiable manifolds, of interest to the scientist working on any field where tensor calculus is needed. TTC can also be interesting for teaching purposes. Articles, links, and a tutorial.
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- TtH: a TeX to HTML translator - Ian H. Hutchinson
TtH translates TeX source that uses the Plain macro package, or LaTeX, into a near equivalent in HTML. It supports built-up fractions through HTML tables and mathematical symbols via the common extension tag [font face="symbol"] This enables semantically
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- TTMath - big online calculator - Tomasz Sowa
This big numbers library for C++ programming language performs mathematical operations with unsigned/signed integers and floating point numbers.
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- Tumblehome Learning
Makers of educational products such as Lost in Tangrams and -- through a partnership with TERC, with funding from the National Science Foundation (NSF) -- Mixing in Math (MiM) cards, gameboards, and books.
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- The Tunnel of Samos - Project MATHEMATICS!, California Institute of Technology
A videotape-and-workbook module that explores a basic topic in high school mathematics in ways that cannot be done at the chalkboard or in a textbook. This video describes a remarkable engineering work of ancient times: excavating a one-kilometer tunnel
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- Turbo Tables Educational Software - AGoGoGadget
Intended to teach multiplication techniques especially useful for products larger than 12x12. Includes teaching module, timed trial, and game for practicing your multiplication skills. Free demo available. Available for Windows XP and Pocket PC platforms.
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- Turbulence, Chaos and Disordered Systems
A research group at the Eindhoven University of Technology in the Netherlands investigating turbulence, self-organization, chaos, and complexity in fluids. Descriptions of projects and full text of related thesis projects.
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- TurkZeka - Yilmaz Ekici, TurkZeka.com
Clever puzzles, posted regularly, with quarterly puzzle competitions open to all with free login. In Turkish, English, and Japanese.
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- Turn of the Screw - Ivars Peterson (MathTrek)
Mathematician Chris Rorres of Drexel University in Philadelphia has taken a close look at Vitruvius's specifications for constructing an Archimedes screw... Recent years have seen a revival of interest in the Archimedes screw, particularly for its proven,
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- TurnOnCCMath.net - Confrey, Jere, et al.
Learning trajectories that unpack the K-8 Common Core State Standards (CCSSS) for Mathematics from the standpoint of student learning, and elaborate the underlying scientific research in mathematics education. Click on a hexagon or a trajectory for detailed
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- Turtle Tracks - Ivars Peterson (MathTrek)
One way to describe a geometric figure is in terms of the path generated by a moving point. Using the computer language LOGO, children can produce a list of commands to govern the motion of a "turtle" and trace out a geometric track on the computer screen.
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- TutaPoint.com - TutaPoint.com
Tutapoint.com provides online math, science, and language tutoring. Math subjects include basic math and high school topics.
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- Tutor Amigos - Tutor Amigos, LLC
Also in Spanish. Live, online tutoring and homework help in Math and Science for Spanish-speaking students. Our goals are to provide Latinos and Hispanics with affordable, personalized instruction in Math and Science and to support those English Language
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- Tutor.com - Tutor.com, Inc.
One-to-one real-time help from professional subject experts and librarians. Students looking for homework help may check if their local library or after-school center offers free tutor.com tutoring; try tutor.com personal online tutoring free for a week;
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- Tutor For Maths - Vikram Singh
One-to-one math tutoring, consulting, brainstorming, and editing sessions conducted online while on the phone with WhizIQ electronic whiteboard software.
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- The Tutor House: math - Adrianne Meldrum
Tutoring elementary and middle school students, Meldrum would often "hunt the Internet for tips and helps on teaching concepts to my students. I find great stuff, but I wanted somewhere central that other tutors like me could find them...." Every Wednesday
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- Tutorials for the Calculus Phobe - Mike Kelley
Flash tutorials that explain calculus audio-visually. A work in progress, more are posted as they are completed.
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- Tutorials - Harvey Mudd College Department of Mathematics
Primers for pre-calculus, single variable calculus, multi-variable calculus, linear algebra, and differential equations, each with proofs, examples, and key concepts highlighted, some with Mathematica plots to view in a new browser window: algebra review,
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- The Tutorials Search Engine
Searchable listings of tutorials on a variety of subjects, including mathematics.
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- Tutorial World - Strategic Thinking Business P/L Singapore
Provides two sample printable worksheets covering a variety of topics for
pre-school and primary grades from 1 to 6. Registered users (approximately
US $11.10) have access to more worksheets and also answer sheets.
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- Tutoring Unlimited - Roman Chertes
Math assistance for local students in Stamford, CT. Information about the tutor and services offered.
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- TutorIT Math Skill Tutors - Intelligent Micro Systems, Ltd's (DBA Scandura)
Adaptive tutorials that identify what a math student does and does not know -- and then provide the information needed by that student to master the skills taught. Packages include basic facts (addition, subtraction, multiplication, division), algorithms
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- TutorLinker: The Most Innovative Tutor Network - TutorLinker.com
TutorLinker uses online map system so people who are looking for local tutors can easily find their location and compare with other tutors. All services are currently free.
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- TutorMatch - TutorMatch.com
A tutoring referral service for educators and students. Professional and skilled tutors offer academic assistance and skills development, geared to the learning styles of their students. Tutoring options include face to face meetings or individualized
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- tutOR - Moshe Sniedovich and Angie Byrne
An online Operations Research (OR) tutorial system developing tutorial modules for specific OR topics, generic web tools to facilitate the construction of the OR modules, and research of the WWW technologies pertaining to this project. Modules for investigating
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- TutorNEXT - tutorNEXT, Inc.
One-on-one, individualized tutoring sessions in math and English. An enrichment program in math, and free printable math worksheets, are also available. Full listing of services on the site.
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- Tutor Pace - Tutorpace Inc.
Online homework help tutoring. Free math resources include descriptions of and primers for pre-algebra, algebra, geometry, trigonometry, statistics, and calculus.
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- TutorTeddy.com
Online tutoring sessions across grades in arithmetic, algebra, statistics, probability, calculus, geometry, and trigonometry. The TutorTeddy.com site also freely offers more than a hundred chalkboard video lectures and worked problems.
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- TutorVista - TutorVista.com
Interactive lessons, worksheets, and homework help for math students grades 3-12 from this online education company.
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