 Taxicab Angles and Trigonometry  Thompson, Dray
Taxicab geometry is essentially the study of an ideal city with all roads
running horizontal or vertical. The roads must be used to get from point A to point B; thus, the normal Euclidean distance function in the plane needs to be modified. Article abstract:
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 Testing Applets  Philippe B. Laval, Kennesaw State University
Applets categorized into regression, linear functions, quadratic functions, exponential functions, trigonometric functions, differentiation, integration, and graphing and other applets.
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 themathlab.com
Playful, interactive studentmade problems, games, drills, lesson ideas, tools, "magic," and more. Lessons include practice problems which, when solved correctly, generate passwords that grant access to "treasure rooms." Lesson ideas include Algebachee
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 TheMathPage: Topics in Trigonometry  Lawrence Spector; Borough of Manhattan Community College, CUNY
Trigonometry from the very beginning, for anyone who needs help or a review of trigonometry. Topics include: Ratio and Proportion; Radicals: Rational and Irrational Numbers; The Pythagorean Theorem; The Definitions of the Trigonometric Functions (Ratios);
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 There are trisectable angles that are not constructible  Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
Why certain angles that are trisectable cannot be constructed by traditional methods.
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 TI83 / TI84 Games and Programs  Bill Paetzke
Bill Paetzke offers TI83/TI84 Plus programs to help students and teachers be more efficient in using their calculators. The programs are organized under these categories: Algebra, Finance, Geometry, Physics, Programs, Statistics, Trigonometry, and Tutorials.
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 TI85 Programs  John Lindsay Orr; Dept. of Mathematics & Statistics, Univ. of NebraskaLincoln
Integration programs include Riem (calculates a numerical value for the Riemann sum approximation of the definite integral of a function), Circumscribe (calculates an approximation of the definite integral of a function using circumscribed or inscribed
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 Topics in Integral and Differential Calculus  Teresinha Kawasaki
Interactive, illustrated introductions to polynomial functions, trigonometric functions, exponential and logarithmic functions, the derivative, differentiation formulas and the chain rule, differentiating trigonometric functions, maxmin problems, integration,
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 TotiPM  Jordi Lagares Roset, Prof. of Mathematics, Girona
Una página basicamente en Catalán, pero con referencias también en castellano e inglés. Páginas didácticas, problemas, software. A page primarily in Catalan but with Spanish and English language references. Lessons,
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 Transmath  A CBL Mathematics Tutor  Joanna Brown
Transmath is a computerbased (Windows platform) mathematics tutor designed to strengthen and consolidate the basic mathematical knowledge of students commencing numerate degrees. Module exercises, featuring animations, come with constructive interactive
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 Triangles, Circles, And Waves  Kenny Felder
The site provides an overview of trigonometry. The material is merely
a refresher; only useful to beginners in trigonometry when used as supplementary course material in a trigonometry class.
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 Triangulation (SMILE)  Ann M. W. Brandon, Oak Forest High School
A lesson designed to teach students the basics of how to perform and calculate
triangulation. From the Practical and Applied Math section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement.
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 Tricks for Learning Math  Math Forum, Teacher2Teacher FAQ
Answers to a frequently asked question: What are some math tricks and mnemonic devices I can use with my students?
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 Trig According to Euclid  Len Smiley, Deborah Smiley
Four figures proving trigonometric addition and subtraction formulas for cosine and sine. Free of Cartesian coordinates, the proofs are synthetic and use a common, minimal diagram from Euclidean geometry.
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 Trigonometric Functions and Calculus  Waner, Costenoble; Hofstra University
A text on the WWW for liberal arts and business majors. Contents (each with exercises): Modeling with the Sine Function; The Six Trigonometric Functions; Derivatives of Trigonometric Functions; Integrals of Trigonometric Functions.
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 Trigonometric Functions  Larry Gladney, Dept. of Physics, Univ. of Pennsylvania
From the Interactive Textbook of PFP 96. A review of the trigonometric functions, sine, cosine, and tangent, as the most frequently used functions seen in introductory physics.
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 Trigonometric Functions (SMILE)  Lesia Smith, Michael M. Byrne School
A lesson designed to teach students to define and demonstrate the six trigonometric functions; and to facilitate using the three most frequently used trigonometric functions. From the Algebra and Trigonometry section of a collection of almost 200 single
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 Trigonometric Identities  David Manura
Table of Common Angles, Law of Sines, Law of Cosines, and more.
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 Trigonometric Integrals  David Hart
An HTML version of a Maple worksheet used as an alternative to transparencies in a Calculus class lesson at Indiana University. How do you integrate the trigonometric functions? Includes discussion, formulae, diagrams, and exercises.
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 Trigonometry Challenge  ETCAI Products
A program designed to supplement your classroom and textbook instruction in numerical trigonometry. A trial program is available for download. The generic topics can be used with most textbooks. For Windows 95/98/98SE/me/XP/2000/NT4.
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 Trigonometry (Manipula Math)  International Educational Software (IES Inc.)
More than 20 Java applets designed to demonstrate principles of trigonometry, including sine, cosine, and tangent function boxes; graph of y=sin x, y=cos x,
y=sin ax, y=A sin (Bx+C), and y=sin x + cos x; Fourier series; sin t = a;
cos t=a; sin(A+B);
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 Trigonometry Reference Sheets (S.M.A.R.T.)  Math Share Shop
Basic curves. By students at Theodore Roosevelt H.S., Bronx, & Edward R. Murrow High School, Brooklyn.
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 Trigonometry (Seeing is Believing)  De Silva, D'Andreti; ThinkQuest 1997
A trigonometry tutorial, comprising: angles; trigonometric functions; oblique triangles; vectors; polar cordinates; complex numbers; and hyperbolic functions.
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 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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 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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 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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 Understanding Mathematics: From Counting to Calculus  Keith Kressin, K Squared Publishing, Inc.
A comprehensive book for anyone who desires clear and concise math explanations, written for a nontechnical audience to cover the math fundamentals normally taught from first grade through college (for more information, see the Table of Contents).
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 University of South Carolina High School Math Contests  David Sumner
Problems from the University of South Carolina (USC) High School Math Contests, since 1994. Walk step by step through illustrated solutions to each problem using the "next step" button. The delivery of questions is designed for competitive timing. Also,
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 Vectors & Trigonometry  Dave Mason
Problems: Converting from Polar to Cartesian Coordinates; Adding Vectors; Hexagon Inscribed in a Circle; The Earth Curving Away From You; Surveying with a Protractor.
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 VisualMath  G. Fonthal, VisualPhysics
Math shareware programs that feature visual and interactive techniques under Windows 95 may be downloaded from this site: for numbers (real, complex, binary); set theory (Venn diagrams); geometry (shapes and areas, 3D Geometry); algebra (equations, polynomials,
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 Volume of a Tank  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about finding the volume of cylinders, cones, oblate spheroids, and other tanks, such as "How can I calculate volume of liquid in a cylinder that's not full and lying horizontally?"
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 WAVE: Web Access Virtual Education  University Laboratory High School; University of Illinois at UrbanaChampaign
The Illinois WAVE Project provides Mathematica Tutorial notebooks categorized as pertaining to Algebra, Applications, Calculus, Conics, Geometry, Precalculus, Statistics, or Trigonometry, for use in the high school mathematics curriculum. From the University
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 WebCalc  Blaine Hilton
A collection of free, Webbased calculators that solve complete equations. Many of the calculators allow the user to solve for any of the variables. Subjects include algebra, geometry, trigonometry, fractions, complex numbers, and miscellaneous math;
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 Webtrig  Thomas E. Price
A Web tutorial on the fundamentals of trigonometry. The lessons in PDF format include an introduction to angles and their measurement, definitions of the trigonometric functions, graphs of trigonometric waves, an introduction to
trigonometric identities,
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 Whistler Alley Mathematics  Paul Kunkel
Kunkel's Geometer's Sketchpad lessons convey a conceptual understanding, usually without rigorous proof, with questions and suggestions for extensions: Buffon's Needle (an old probability exercise); Chinese Handcuffs (questions with applications for geometry,
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 Word Problems for Kids  St. Francis Xavier University; Canada's SchoolNet
Word problems by level for students in grades 512, which can help improve problemsolving skills. A hints link is available for difficult problems. Complete solutions are available upon request to teachers with email addresses. From students, principals,
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 XPress Formula Editor & Problem Solver  HALOMDA Educational Software
A formula editor and symbolic calculator that enables Graphical WYSIWYG editing of math expressions, drawing graphs, and performing algebraic transformations. Expressions can be copied into Word and solved numerically/symbolically step by
step. For
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 Yahoo! Science: Mathematics  Yahoo! Inc.
All the best on the Web in math including Indices, alphabetically listed by category: Academic Papers; Algebra; Applied Mathematics; Books; Calculus; Chaos; Combinatorics; Complex Systems; Conferences; Education; Employment; Entropy; Equations; Ethnomathematics;
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 You Can Understand Mathematics  Stratford Educational Institute
MATH 2000': a 7lesson distance education program that explains difficult college level ideas in terms of an overview or background presentation that students can use to help them understand many of the concepts in their high school math courses.
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 Your Mathematics Society  ChatArea.com
A chat area/forum for all mathematics questions. General mathematics, algebra, calculus, geometry/trigonometry, statistics, calculators, and history of mathematics are covered.
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 Your Online Exchange to Additional Math Solutions  amaths.com
Tutoring, lessons, and tips for learning math; fun math topics; a marketplace for selling your used textbooks; and bulletin boards for discussion. Designed for students preparing for the GCE 'O' Level Additional Mathematics examination, based on the newly
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 Zebragraph  Jonathan Choate
Download Choate's conference speeches, lecture notes, and other resources such as his Exeter courses and talks. "Enriching the Traditional Geometry Curriculum Syllabus" features the Problem of Regiomontanus. Investigations include the tetrahedral geometry
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 Zona Land: Education in Physics and Mathematics  Edward A. Zobel
Text, Java, and VRML worlds demonstrating mathematical concepts in graphs, functions (including linear and polynomial), geometry, and trigonometry, as well as physics lessons on a similar model.
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