 Hessport's Rubik Shop  Hessport's Rubik Shop
Buy Rubik's Cube, Rubik's Revenge (4 x 4 x 4), Rubik's Professor (5 x 5 x 5), Rubik's Magic, Rubik's Rings, Rubik's Shells, Rubik's UFO, Rubik's Mini (2 x 2 x 2), Rubik's Snake, Rubik's Tangle, Rubik's Triamid, Rubik's Double Tangram, Rubik's Bricks,
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 Heureka: páginas lúdicomatemáticas  Rodolfo Valeiras Reina
Home page of a Spanish math enthusiast from Cádiz, España. Calidociclos (a kaleidocycle is a ring of tetrahedra joined edge to edge; as you twist it inward or outward, the tessellations on the faces of the tetrahedra meet in new ways); Problemas
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 Hewlett Packard/University of Melbourne School Mathematics Competition  Tony Guttmann
Since 1972, a competition emphasizing mathematical insight and creativity. Download PDF files of competitions and solutions dating back to 1996, as organized into the three levels of junior, intermediate, and senior. Also, FAQs, entry form, and other
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 Hexadecimal Headquarters  Intuitor
A comparison of base ten and base sixteen (hexadecimal), discussing why we should switch to hexadecimal. The site includes a hex clock, and explanations of both base ten and hexadecimal.
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 Hex Loop Puzzles  Erich's Puzzle Palace; Erich Friedman
Ten hexagonalgrid puzzles; can you fill in the correct path? Answers provided.
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 Hey Math!
Animated lessons on a wide range of topics, plus a repository of questions indexed by concept and grade. Many more lessons are available for purchase. Started in Chennai, India, by Nirmala Sankaran and Harsh Rajan, Hey Math is a partnership with the Millennium
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 Hiding in DNA  Ivars Peterson (MathTrek)
Spies might have to start boning up on molecular biology to pass along and decipher secret messages. During World War II, German spies used microdots to hide information in plain view. Consisting of a greatly reduced photograph of a typed page, a microdot
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 Hiding in Lattices  Ivars Peterson  Science News Online
An improved mathematical strategy for encrypting data: the mathematics of lattices offers an alternative basis for a publickey cryptosystem. A lattice is a regular array of points, each one specified by a set of coordinates. Two coordinates would designate
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 Higher Bitesize: Maths  BBC Scotland Learning
"Tasty chunks of revision goodness..." Revision means studying, and this site aims to help students study, with online illustrations and materials, and interactive tests.
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 Highland Tessellations  Karen M. Stagge, Highland Middle School, Libertyville, IL
Tessellations A La Escher: an introductory unit based on MECC's Tesselmania! software and the graphics of M.C. Escher, to help students realize the importance of mathematics in the art world. Also links to work done by students at other schools.
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 HighQuality Mathematics Instruction: What Teachers Should Know  The IRIS Center
Click through descriptions of standardsbased curricula, evidencebased strategies, and effective practices for math teachers. See, in particular, the "Perspectives & Resources" module for questions and answers such as "What is highquality mathematics
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 High School Financial Planning Program  National Endowment for Financial Education (NEFE)
A sixunit program that provides teens with a greater understanding of and ability to manage their personal finances in the areas of goal setting, budgeting, and saving. With games, simulations, case studies, and interactive exercises, the site provides
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 High School Geometry Lessons  Jeffrey P. Bannish
Narrated screencast lessons, most between seven and fifteen minutes long, created to accompany the McDougal Littell high school geometry textbook. Bannish explains theorems and concepts visually, and also works select textbook example problems, often
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 High School Homework
Highschoolhomework offers homework help in the following subjects  algebra, geometry, trigonometry, calculus, biology, chemistry, physics and economics.
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 High School Journal of Mathematics  Theodore Baas, Founder and Head Editor
A quarterly journal that publishes research from high school age students. High School Journal of Mathematics also gives teens opportunities such as editing and reading mathematical work.
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 High School Math Contests (19862000)  Dept. of Mathematics, Univ. of South Carolina, Columbia, SC
An annual mathematics competition for South Carolina high school students, designed to stimulate interest and to recognize those who exhibit exceptional mathematical talent. Problems, solutions, and winners from previous years are on the Web.
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 High School Mathematics  Cem Giray
Site contains lecture notes, exams, quizzes, assignments, challenging problems, curricula (in this case meaning topics of study), and olympiad materials of high school level for teachers and students. Some materials are web pages, some are in PDF format,
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 High School Math Lessons  Joe Mercer
Lessons, worksheets, quizzes, and tests for high school algebra 1, algebra 2, geometry, precalculus, and AP Calculus AB written by a retired math teacher. Some of the resources, composed in SoftChalk's LessonBuilder, include Flash animations or download
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 High School Notebooks  George Beck; MathSource
High school Mathematica notebooks in two different styles, for teachers to use either directly or as examples of what they might want to imitate or avoid. One style has little explanation and is meant to encourage the student to experiment with the functions
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 High School Operations Research
Modules consisting of one or two student activity worksheets (46 pages) in which students discover mathematical concepts while solving a scaleddown problem set in a context they can relate to. In addition each module contains twenty to thirty pages
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 High School Problem of the Week  Department of Mathematics, Southwest Missouri State University (SMSU)
Word problems in number theory, logic, algebra, analytic geometry, and other topics. Read the solution to the most recent problem, and archives of previous problems and their answers.
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 High School Projects (COMAP)  Consortium for Mathematics and Its Applications
Products developed in print, video, and multimedia formats, supporting the NCTM Standards, to bring mathematical modeling into high schools around the country, and present mathematics in contexts that are relevant to students. Curriculum: Mathematics:
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 High School Student Center  Math Forum
Selected Internet resources for High School students: projects, activities, sites, and software to help make math fun.
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 High School Teachers Place  Math Forum
Selected Internet resources for high school teachers: lessons, activities, sites, and software for your classroom.
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 High Speed Vedic Math Online DVD  The Vedic Maths Forum India
Learn to calculate 15 times faster than conventional methods. 15 Hours High Speed Vedic Math DVD. Books. Covers squares, square roots, multiplication, division, cubes, cube roots, algebra, equations, quadratic equations, Pythogoras' theorem, and more.
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 HillsdaleLenaweeMonroe Math and Science Center
From eastern Michigan, USA. Interactive sessions and information on water studies for high schools, including data collection on frogs and toads, a virtual marsh tour, water quality studies, TI calculator programs, and links to math/science sites.
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 HippoCampus  Monterey Institute for Technology and Education
Video lessons in arithmetic, algebra and geometry, statistics and probability, calculus and advanced math. The Monterey Institute for Technology and Education also runs the National Repository of Online Courses (NROC) and NROC math.
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 HiQ Analysis, Visualization, and Report Generation  National Instruments
An interactive problemsolving environment where you analyze, visualize, and document realworld science and engineering problems. HiQ solves realworld problems using a notebook methodology that combines interactive analysis, data visualization, and
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 Histogram Applet  R. Webster West, Dept. of Statistics, Univ. of South Carolina
An applet designed to teach students how bin widths (or the number of bins) affect a histogram. The histogram shown for the Old Faithful data set. Students interactively change the bin width by dragging the arrow underneath the bin width scale, and decide
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 Histogram Explorer  Eric Scheide, University of San Francisco
Histogram Explorer is a tool for understanding histograms and their statistics. Drag the bars of the applet's histogram to see their effect on the mean, median, mode, range, standard deviation, and IQ, which recalculate after each change; select normal,
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 Histoire des maths et des mathématiciens  Franck Duffaud
Duffaud, enseignant dans le 93, a dédié son site à l'histoire des maths.
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 HistoriaMathematica  Julio Gonzalez Cabillon
A closed, unmoderated mailing list whose purpose is to provide a virtual forum for scholarly discussion of the history of mathematics among those with a serious interest in the field. English, Portuguese, and Spanish are the official languages, and abstracts
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 Historical Tidbits  Paul Golba
Biographical and mathematical information (from an online interactive textbook on Real Analysis by Bert G. Wachsmuth) on Niels Abel, Archimedes, Johann Bernoulli, Bernard Bolzano, Georg Cantor, Augustin Cauchy, Augustus De Morgan, Euclid, Leonhard Euler,
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 Historic and International Numeral Systems  Stephanie Nam
Input English, Burmese, Burmese numerals, HinduArabic numerals, Korean, or Thai numerals; select the appropriate choices from the pulldown menus; then press the red "submit" button, and this student project from the Wolfram Summer Camp 2017 outputs
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 The history of cartography
 MacTutor Math History Archives
Linked essay on how map making has played an important role in the development of mathematics.
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 The History Of Computing  Dept. of Computer Science, Virginia Tech
Index of the items in a collection of math history materials related to the history of computing by J. A. N. Lee, EditorinChief of the IEEE Annals of the History of Computing, constructed as part of the course materials for the "Professionalism in Computing"
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 A History of Mathematical Notations  Florian Cajori
"In this history it has been an aim to give not only the first appearance of a symbol and its origin, but also to indicate the competition encountered and the spread of the symbol among writers in different countries...." The first volume of Cajori's
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 The History of Mathematics
Notes from a History of Mathematics course given at the Univ. of South Australia and a Graduate Certificate in Mathematics Education project. Topics include a chronological study of the development of number from a European and Eastern perspective; the
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 History of Mathematics  David Joyce; Dept. of Mathematics & Computer Science, Clark University
History sources, books and articles online. Sources by region (Babylonia, Egypt, China, Greece, India, Arab sphere, Japan, and Europe); Books and other nonweb resources (organizations, bibliography of source books, journals, bibliographies and catalogues,
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 History of Mathematics  David R. Wilkins, Trinity College, Dublin
A directory of Web sites and pages around the world relating to the history of mathematics. Also biographies of some seventeenth and eighteenth century mathematicians, taken from A short account of the history of mathematics (4th edition, 1908) by W.
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 History of Mathematics (Mathematics Archives)  University of Tennessee, Knoxville (UTK)
An alphabetical list of some of the best sites for math history on the Web, part of the Math Archives' collections of Math Topics. Icons provide more information about level, interactivity of site, Java, and presence of images or links.
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 History of Mathematics (MathPages)  Kevin Brown
About 40 "informal notes" by Kevin Brown on math history: Zeno and the paradox of motion, Archimedes and the square root of 3, Mayan numeration, Hipparchus on compound statements, Planck's analysis of Kaufmann's experiment, the ten means of Ancient Greece,
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 History of Measurements  Tiffany Chambers
Capsule histories of measurement (length, volume, weight, time) and select measurement tools (the sundial, water clock, hourglass, and chronometer; the barometers; the mercury hermometer).
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 History Of Our Solar System on a Time Line (SMILE)  Richard Murray, Gage Park High School
A lesson designed to teach students how to use ratios to make scale models. From the Graphs and Visuals section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement.
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 History of Science and Math
A "free, communitydriven Q&A" for those interested in the history and origins of science and mathematics. Post, answer, and vote up or down questions such as "Ancient Chinese numbering system," "What evidence is there that Fermat had a proof for
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 History of Science, Technology, and Medicine  WWW Virtual Library (WWWVL)
A searchable online service established to keep track of information facilities in the history of science, technology and medicine. Sites are available alphabetically or by scientific field, source, exhibitions, institutions, regions, a historical biographical
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 A history of time: 20th century time
 MacTutor Math History Archives
Linked essay on the dramatic changes in ideas about time in the 20th century.
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 A history of time: Classical time
 MacTutor Math History Archives
Linked essay on the central role time has played in mathematics from its very beginnings.
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 The history of voting
 MacTutor Math History Archives
Linked essay on the history of electoral systems.
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 A history of Zero  MacTutor Math History Archives
Linked essay on the development of the concept of zero. There are two important but different uses of zero: one as a empty place indicator in our placevalue number system, and one as a number itself in the form we use it as 0. There are also different
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