 Topics in High School Mathematics  Martin Cohen
Lesson ideas on geometric series, mathematical induction, Pythagorean triples, combinatorics, continuity, modular arithmetic, rotations and revolutions, and more.
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 Touch3D
A commercial Macintosh program for 3Dmodeling, concept design, industrial design, quick prototyping, mockups, packaging, scale models, physical renderings, production preparation, and unfolding/unwrapping. Touch3D is a complete 3D modeling/unfolding
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 Toying with Reality: Java Applets and VRML  Paul Flavin
Virtual Reality: Modeling with Math, and a little Java. Applets to manipulate: The Pythagorean Theorem; Equation Grapher: "You type, I Graph"; Graphing Vector Calculator; Java 3d Visualizer; Virtual Rubik's Cube; Raytracing applet; Java Calculator; Play
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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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 Tutor World Online
This online tutoring service sells homework help and SAT preparation packages. The Tutor World Online journal posts free primers in math.
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 UCALC  Daniel Corbier
Windows shareware tools to compute compound interest, convert from miles to kilometers, solve a quadratic equation, plot a 3D surface, or simply add up bills. Features include: Expression Evaluator (evaluates expressions such as "5+4*1013"); Unit Converter;
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 Uncovering Mathematics with Manipulatives and Calculators  Texas Instruments, Inc.
A text that provides K6 activities emphasizing problem solving, reasoning, communications, and connections, clustered into four content strands: number sense; patterns, relations, and functions; measurement and geometry; and probability and statistics.
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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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 UnitMath Example: Geometric Solids  Paul M. Price
Examples of how to use UnitMath with geometric solids: box (rectangular parallelepiped), cone (right circular), cylindrical solids (can  right circular cylinder; horizontal cylinder, partly filled), oblate spheroid, prolate spheroid, spherical solids
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 The University of Chicago School Mathematics Program (UCSMP)
A K12 curriculum begun in 1983, with educational materials designed to bring the real world into the classroom, emphasizing reading, problemsolving, everyday applications, and the use of calculators, computers, and other technologies. Unnecessary repetition
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 Use A Chair To Teach Math (SMILE)  Laura B. Reed, Rosa L. Parks School
A lesson designed to teach students some basic operations of math through measuring a chair. Sample questions: What size box would it take to mail the chair? Could two chairs fit in the same box? How many chairs could fit in this room? What area of space
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 Using the Internet: Mathematics  Douglas Butler; Pearson Publishing (U.K.)
A 55page looseleaf book compiled to save teachers time finding excellent resources on the WWW and to provide a curriculumbased bank of ideas. Support activities do not demand that students have free access to the Web. The pack is divided into ten main
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 Varsity Tutors  Chuck Cohn, founder and CEO
Varsity Tutors is a private tutoring service in Chicago (with tutors there and in Houston, New York City, Phoenix, St. Louis, and Tucson) that provides premium athome (or mutually agreed location) academic assistance in mathrelated subjects. Varsity
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 vector.calculus.net (calculus@internet)  Christopher A. Barker
Core topic and course syllabi and menus for Vector/Multivariable calculus dealing with the calculus of many dimensions, specializing in computer visualization and interaction. Threedimensional space geometry; Vector arithmetic and geometry; Derivatives
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 Ventura Educational Systems
An online store offering product information on GraphPower, Geometry Toolkit, Probability Toolkit, Balancing Act, HandsOn Math Vols. 1, 2, and 3, Puzzle Logic, Algebra Concepts, Geometry Concepts, Coordinate Geometry, and more. The site provides links
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 Virtual Paper Cut & Fold  Mike Sokolov
A Java applet and a Flash tool for folding paper online. Make snowflake patterns; learn how to create a fivepointed star with a single cut. With a gallery of folded paper creations.
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 Visia Math  Joël Gauvain
Software in French for graphical representations. Un didacticiel de mathématiques pour lycée ou collège. Vous pouvez en télécharger une version shareware ainsi que des fiches de travail pour les élèves.
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 Visualizing Mathematics  Yerushalmy, Shternberg, Cohen, Talmon
A computeroriented inquiry curriculum for secondary mathematics. Visual Mathematics software programs include Calculus Unlimited; The Geometric Supposer; Modeling: MoveOn, The Function Sketcher & and Escalator. With descriptions, screen shots, ordering
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 Visual Solid Geometry  Edu2000 America Inc.
A full curriculum on CDROM for Windows and Mac, combining hypertext, graphics, and QuickTime animations to illustrate solid geometry concepts, polyhedra and solids of revolution, and surface areas and volumes of solid figures. Typical "experiments"
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 Vocabulary PuzzleMaker  Glencoe Online
Make the following types of puzzles to go along with your Glencoe text in prealgebra through geometry: crossword, word search with words, word search with clues, or jumble. Available for free download in both Windows and Macintosh formats.
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 Volume and Surface Area (SMILE)  Charlotte Goldwater, Kenwood Academy
A lesson for grades K12 designed to teach students to understand the difference between surface area and volume. From the Geometry and Measurement section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative
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 Volume of a Torus  Paul Kunkel
An investigation into and explanation of the volume of a torus.
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 Volumes Of Cones & Pyramids  Jim Loy
A short essay on deriving the volume of cones and pyramids.
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 The Web Classroom  Eagle Eye Web Masters
An educational site from Australia that provides lessons and tests to help students understand concepts in Mathematics and build language skills in English. Elementary and Middle School math pages offer Fun with Fractions, "What Number," Times Tables,
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 Webgnosis.net  Matemáticas PAU  Webgnosis S.L.
Webgnosis Matemáticas Pruebas de Acceso a la Universidad contiene 1,500 ejercicios (álgebra, geometría, análisis), con el mayor énfasis en el diseño de situaciones de aprendizaje eminentemente prácticas.
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 The Web Wizard's Math Challenge  J. Mooser
An ongoing Internet contest; register (free) to submit answers and score points. Problems are designed to be readily understood but not readily solved. Speed counts, because points are awarded based on the order in which contestants submit correct answers.
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 What's the Problem? Geometry & Art through the Ages  Indianapolis Museum of Art
An exhibit exploring how some artists have used geometry as a creative tool. The site is divided into three topics: lines, polygons, and volume. Also provided as links from the left sidebar are a glossary and a list of references for further reading.
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 Width, Diameter, and Geometric Inequalities (The Geometry Junkyard)  David Eppstein, Theory Group, ICS, UC Irvine
An extensive annotated list of links to material on width, diameter, and geometric inequalities.
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 A Winning Division  Ivars Peterson (MathTrek)
A farmer plans to divide a triangular piece of land evenly between his son and daughter. Because he wants to be scrupulously fair, he would like the two pieces to have not only equal areas but also equal perimeters. Where should he draw the line? This
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 wNetSchool
A resource for K12 teachers, with some information for adult education teachers (i.e., the GED exam). Subscribing to the site is free, but one may also enter without subscribing. wNetSchool provides lesson plans centered around the Internet or educational
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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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 Word Problems III  Energy Conservation Enhancement Project
Perimeter, area, and volume measurements; shading the exterior of a home. Math objectives: 1. Use correct formulas to compute geometric measurements. 2. Complete a variety of word problems involving three geometrical functions: area, volume, perimeter.
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 Write Math with the Math Forum  Math Forum
A standardsaligned, gradespecific program to improve math problem solving. Engaging problems adapted from the Problems of the Week program have been correlated to state standards, math topics, and widelyused textbooks. A trial membership gives you
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 Yahooligans! School Bell: Math  Yahoo
Yahoo's kids' guide to math sites including topics: Games and Puzzles, Geometry, Homework Help, Just the Facts, Mathematicians, Measurements, and Real World Math.
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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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 Zome Geometry: Handson Learning with Zome Models  George W. Hart
An upcoming book full of things you can make with the Zome System geometry construction set  a handson guide to the geometry of threedimensional space. Contents include: Angles, Polygons, Polyhedra; Icosahedron and Dodecahedron; Platonic Solids; Counting;
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 Zome System  Zometool, Inc.
Available in kits of various sizes, Zometool is a 31zone design tool and educational toy for kids, hobbyists, students, teachers and researchers. Precisionmolded in ABS plastic, Zometool models spatial structures representing hyperspaces of up to 31
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