61. SBC Pacific Bell Knowledge Network Explorer : Online Learning : Blue Web'n Searc Blue Web'n Results search results for Mathematics (geometry). 13 Sites Found. piDay http//mam2000.mathforum.org/t2t/faq/faq.pi.html How many celebrations are http://www.kn.pacbell.com/wired/bluewebn/content/Cat_9_Scat_53.html

Algebra Arithmetic Calculus General/Other ... Statistics and Probability Blue Web'n Results search results for Mathematics (Geometry) 13 Sites Found Pi Day http://mam2000.mathforum.org/t2t/faq/faq.pi.html How many celebrations are there in your math class? Each year on March 14th many classrooms break from their usual routines to observe the festivities of "Pi [] Day" because the digits in this date correspond with the first three digits of (3.14). Activities may include investigations of the value of by approximating the ratio of the circumference to the diameter of a circle. Some teachers choose to end their Pi Day celebration by eating pie! (added 1/8/02, reviewed 1/8/02) A Fractals Unit for Elementary and Middle School Students http://math.rice.edu/~lanius/frac/ "They're everywhere, those bright, weird, beautiful shapes called fractals." Use this fractals site to help your students understand what these fascinating pictures are all about. (added 2/25/97, reviewed 4/15/99) Cool Math Sites http://cte.jhu.edu/techacademy/web/2000/heal/mathsites.htm Need some ideas on integrating math and technology? Here's a hotlist of a variety of math websites. Don't just go to the Puzzles and Teasers at the top of the page. There are categories for Algebra, Geometry, and Math Resources. Find online calculators, raw data students can access, and information about the history of Mathematics.

62. Volume Calculations For Cylinder Shaped Balloons -- Geometry Of Scaling Area of a Circle = pi * ( Perimeter / 2 * pi ) ^2 = Perimeter ^2 / 12.566 ( ie.4 * pi ) ( ie. geometry of Scaling For Dimension, Volume and Surface Area. http://www.overflite.com/volume.html

Volume Calculations for Cylinder Shaped Model Hot air Balloons Homemade Plastic Bag Model Hot Air Balloons are generally shaped like pillowcases. To calculate volumes, they can be compared with classic cylinders. Here a balloon is imagined as a stack of circles, or ovals, with a top. The volume is equal to the average area of the ovals, multiplied by an "Effective Height," which accounts for the material at the top of the balloon. The simplest way to calculate areas for circles and ovals is to compare them with squares. The perimeter is the most elegant geometric measurement. The quarter-perimeter though is usually more practical to use. NOTE: If the Perimeter of a circle, ie. its circumference, is divided by its diameter, the result is 3.1416..., or Pi. So, the Perimeter / 2 Pi equals the radius. Similarly, 2 * Quarter-Perimeter / Pi also equals the radius. Area of a Square = Quarter-Perimeter ^ 2 (ie. the square of one of the sides) Area of a Square = Perimeter ^2 / 16 Area of a Circle = Pi * Radius ^2 = Pi * ( 2 * Quarter-Perimeter / Pi ) ^2 = 1.273 * Quarter-Perimeter ^ 2

63. TOUCHING BIG BROTHER How biometric technology will fuse flesh and machine; Simon G. Davies, Department of Law, Universit Category Computers Security Biometrics Resources...... It is, however, more likely to take the form of biometric identification usingsuch technologies as fingerprints, hand geometry and retina scanning. http://www.privacy.org/pi/reports/biometric.html

TOUCHING BIG BROTHER How biometric technology will fuse flesh and machine Simon G. Davies Department of Law University Of Essex United Kingdom Simon@privint.demon.co.uk Vol 7, No. 4 1994 Abstract The evolution of information technology is likely to result in intimate interdependence between humans and technology. This fusion has been characterized in popular science fiction as chip implantation. It is, however, more likely to take the form of biometric identification using such technologies as fingerprints, hand geometry and retina scanning. Some applications of biometric identification technology are now cost-effective, reliable, and highly accurate. As a result, biometric systems are being developed in many countries for such purposes as social security entitlement, payments, immigration control and election management. Whether or not biometry delivers on its promise of high-quality identification, it will imperil individual autonomy. Widespread application of the technologies would conflict with contemporary values, and result in a class of outcasts. INTRODUCTION The accurate identification of individuals is a key concern for many government agencies and corporations. It is important to them because it contributes significantly to administrative efficiency and the control of fraud, and can offer benefits to clients as well. A key focus of information systems security in recent years has been the intensification of efforts to establish accurate identity.

64. ENC: Web Links: Math Topics: Geometry is designed to help students in grades 6 to 12 discover the value of pi by using Flatlandwas written for laypersons and students of mathematics and geometry. http://www.enc.org/weblinks/math/0,1544,1-Geometry,00.shtm

Skip Navigation You Are Here ENC Home Web Links Math Topics Advanced ... Frequently Asked Questions Find detailed information about thousands of materials for K-12 math and science. Read articles about inquiry, equity, and other key topics for educators and parents. Create your learning plan, read the standards, and find tips for getting grants. Math Topics Lists of web sites categorized by subject areas within mathematics. Geometry The Math Forum Internet mathematics library Date: Grade: Kindergarten - 12 ENC#: This Internet site is an annotated catalog of mathematics and mathematics education web sites assembled by the Math Forum. It features hierarchical categories (mathematical topics, resource types, mathematics education topics, and educational levels) ... (For more details see Brief ENC Record or Full ENC Record Math fundamentals problem of the week Date: Grade: Kindergarten - 5 ENC#: This Internet site, developed by the Math Forum, features non-routine problems for students working in the content areas of numbers, operations, and measurement, as well as introductory geometry, data, and probability. The problems are designed to help... (For more details see Brief ENC Record or Full ENC Record Date: Grade: Kindergarten - 8 ENC#: (For more details see Brief ENC Record or Full ENC Record Ask Dr. Math

65. Bigchalk: HomeworkCentral: Geometry (High School) Diameter of Earth; geometry on the Sphere; Measuring the Earth; Phenomenologicalpizza; Proving pi; Spherical geometry; Surface Area of http://www.bigchalk.com/cgi-bin/WebObjects/WOPortal.woa/Homework/Teacher/Resourc

Home About Us Newsletters My Products ... Product Info Center Email this page to a friend! K-5 Geometry document.write(''); document.write(''); document.write(''); document.write(''); Effective Use of Living Space Interior Design Measurement of Volume The Cylinder Problem ... Contact Us

66. Bigchalk: HomeworkCentral: Circles & Spheres (Geometry) Area of a Circle; Diameter, Circumference, Radius pi; ExploringGeometry on the Sphere; Find a Circle's Area; Introduction to pi http://www.bigchalk.com/cgi-bin/WebObjects/WOPortal.woa/Homework/Teacher/Resourc

Home About Us Newsletters My Products ... Product Info Center Email this page to a friend! K-5 document.write(''); document.write(''); document.write(''); document.write(''); Circles in Geometry Circling Around (.pdf) Computing the Area of a Circle Exploring Geometry on the Sphere ... Contact Us

67. Joseph Malkevitch's Taxicab Geometry Bibliography Moser, J. and F. Kramer, Lines and parabolas in taxicab geometry,pi Mu Epsilon Journal, 7 (1982) 441448. Reynolds, B., Taxicab http://www.york.cuny.edu/~malk/biblio/taxicab-geo-biblio.html

Taxicab Geometry Bibliography (8/21/99) Prepared by: Joseph Malkevitch Mathematics and Computing Department York College (CUNY) Jamaica, New York 11451-0001 Email: joeyc@cunyvm.cuny.edu (for additions, suggestions, and corrections) Brandley, M., Square circles, Pentagon, Fall, 1970, p. 8-15. Brisbin, R. and P. Artola, Taxicab trigonometry, Pi Mu Epsilon Journal, 8 (1985) 89-95. Byrkit, R., Taxicab geometry - A Non-Euclidean geometry of lattice points, Math. Teacher, 64 (1971) 418-422. Gardner, M., The Last Recreations, Springer-Verlag, 1997. Golland, L., Karl Menger and taxicab geometry, Mathematics Magazine, 63 (1990) 326-327. Iny, D., Taxicab geometry: another look at conic sections, Pi Mu Epsilon Journal, 7 (1984) 645-647. Krause, E., Taxicab Geometry, Dover, New York, 1986. Laatsch, R., Pyramidal sections in taxicab geometry, Math. Magazine, 55 (1982) 205-212. Mertens, L., A fourth dimensional look into taxicab geometry, J. of Undergraduate Mathematics, 19 (1987) 29-33. Moser, J. and F. Kramer, Lines and parabolas in taxicab geometry, Pi Mu Epsilon Journal, 7 (1982) 441-448. Reynolds, B., Taxicab geometry, Pi Mu Epsilon Journal, 7 (1980) 77-88.

68. Pi decimal, pie chart. double helix, pi cartoon, fractal, circle, pi video,circumference. pie, geometry, tessellation, 'pi Day', 159 pm March 14,pi. http://eduscapes.com/42explore/pi.htm

The Topic: Pi Easier - Pi sounds like pie and is equal to about 3.1416. In math, this is the ratio of the circumference of a circle to its diameter. In other words, pi is a number that equals the quotient of the circumference of a circle divided by its diameter. Many people celebrate pi by holding a Pi Day on March 14th or 3/14. Harder - The Greek letter pi represents the number by which the diameter of a circle must be multiplied to obtain the circumference. Pi is an irrational number. That is, it cannot be written as a simple fraction or as an exact decimal with a finite number of decimal places. However, you can increase the number of digits until you reach a number as near to pi as needed. Mathematicians with computers have calculated pi to millions of decimal places. Pi is used in several mathematical calculations. The circumference of a circle can be found by multiplying the diameter by pi (c = pi X d). The area of a circle is yielded by multiplying pi by the radius squared (A = pi X r-squared). Pi is also used to calculate the area of a circle, and the volume of sphere or a cone.

69. Circular Geometry pi from the equation, and substitute in its place a different formula that hasno need of pi. I am proposing to call this new geometry Circular geometry. http://www.flowresearch.com/circular.html

home flowmeter articles temperature study duonyms ... More on Circular Geometry A Circular Geometry of Flow In a recent article,1 I argued that a new geometry of flow is needed. In this article, I expand on this argument. I begin by describing the flawed foundations of Euclidean and Cartesian geometry. I then present the axioms of a new Circular Geometry. Finally, I discuss the implications of this geometry for flow measurement.2 The Flawed Foundations of Euclidean-Cartesian Geometry Traditional geometry rests on two main pillars: the Euclidean axioms that create the conceptual underpinning of geometry, and the Cartesian coordinate system that provides an x and y axis (and z axis, in 3-dimensional geometry) in terms of which points can be located. Unfortunately, both systems have fatal flaws. One flaw in Euclidean geometry consists in the Euclidean conception of the point, and the relation between points and lines. In Euclidean geometry, a line is made up of infinitely many points, each of which has zero area. No matter how many times zeros are added together, however, a positive value never results. And adding infinity into the equation doesn't change anything, since zero times infinity is still zero. While many attempts have been made to explain away this anomaly, it still remains unexplained and unexplainable. There is also a flaw in the Cartesian coordinate system. While the straight-line framework of the Cartesian coordinate system works well for analyzing the areas of squares and rectangles, it is less successful as a frame of reference for curved and circular areas. Finding the area of a circle requires the use of pi, which is the ratio of the circumference of a circle to its diameter. Since the formula for circular area, pi * (r * r), involves the area of a square, (r * r), this formula actually involves calculating how many squares will fit into a circle. Since a square peg does not fit into a round hole, it should not be surprising that no definite number of squares will fit inside a circle. In fact, the number is pi, a nonrepeating, irrational number that mathematicians to this day cannot fully define.

70. Geometry(ii) geometry(ii). one point only. Top of Page. pi Circumference is calculatedfrom the value of the radius or the diameter. pi or is http://www.mathstutor.com/Geometry(ii).html

GEOMETRY(ii) Contents: Circles: Pi: Properties and Rules: Examples: Circles: A shape designed of fixed points of equal distance from the centre, this distance is known as the radius . The circumference is the perimeter. An arc is a section of the circumference. A chord is a line joining two points on the circumference. The diameter is a chord which passes through the centre. A segment is part of the circle that is separated by a line. A sector is part of the circle separated by two lines of radius. A tangent is an outside line that just touches the perimeter at one point only. Top of Page Pi: Circumference is calculated from the value of the radius or the diameter. Pi or is 22 7 or approximately 3 14 and is necessary for many calculations. Circumference = 2 radius or diameter. Radius = circumference or diameter Diameter = circumference or 2radius. Area = radius Exercise with (Note: please use whole numbers only). Top of Page Properties and Rules: (i) The angle of a triangle on the circumference which includes a line through the diameter is always 90 , (see (i) angle a at points A B C ,) Right Angle.

71. Geometry- Area Of A Circle We can understand why pi is less than 4 and further consideration will help someonesee why it is greater than 3 Try geometry for more interesting concepts. http://math.about.com/library/weekly/aa111002a.htm

zfp=-1 About Homework Help Mathematics Search in this topic on About on the Web in Products Web Hosting Mathematics with Deb Russell Your Guide to one of hundreds of sites Home Articles Forums ... Help zmhp('style="color:#fff"') Subjects ESSENTIALS Grade By Grade Goals Math Formulas Multiplication Fact Tricks ... All articles on this topic Stay up-to-date! Subscribe to our newsletter. Advertising Free Credit Report Free Psychics Advertisement PiR - It is Greek to me. A Different approach to the 'Area of Circle'. Math Tutorials Conic Sections Circles Circle Calculator (Area/Diameter) P i. Every student will be introduced to this mysterious creature. Everyone of them has been told that it represents the ratio of the circumference of a circle to the diameter. With that in mind, please understand that the area of a circle is equal to p r . Simple concept! Let's practice using this formula with the following worksheet, and by the way if it makes no sense, then memorize the formula and the fact that you feel 'dumb' is hidden from all. The ratio Pi ( p ) can be demonstrated and with some ingenuity the concept can become concrete using props and hands on . Using Pi

72. Geometry Circle's Circumference, 2 x pi xr. Area, a = length of top b = length of baseh = perpendicular height r = length of radius pi = 3.1416. Circle, pi xr 2. http://met.open.ac.uk/group/jwl/info/geometry.htm

Circle's Circumference 2 x pi x r Area a = length of top b = length of base h = perpendicular height r = length of radius pi = 3.1416 Circle pi x r Rectangle b x h Parallelogram b x h Triangle half x b x h Surface area b = breadth of base h = perpendicular height l = length of base r = length of radius pi = 3.1416 Cube h x b x 6 Sphere 4 x pi x r Cylinder (2 x pi x r x l) + (2 x pi x r Pyramid (2 x b x h) + (b Prism (b x h) + (3 x l x b) Volume b = breadth of base h = perpendicular height l = length of base r = length of radius pi = 3.1416 Cube b x h x l Cylinder pi x r x l

73. Math: Geometry > Circles In Geometry Circles in geometry Overview Grade school geometry doesn't have to get intoa detailed lesson on pi to communicate the basics of this constant. http://www.teachnet.com/lesson/math/geometry/circlesingeo.html

Front page Lesson Plans Math Geometry Circles in Geometry Circles in Geometry Overview: Grade school geometry doesn't have to get into a detailed lesson on Pi to communicate the basics of this constant. Teacher Preparation: flexible tape measure. Procedure Ideas: Break into groups, giving each group something circular to measure, both the diameter and the circumference. Then divide the circumference by the diameter to get a number. When all groups are finished, have each group read off the answer to the division problem. Use this as a lead-in to your further discussion of circle properties. Ideas of circular items to measure: basketballs, softballs, globes, hoola-hoops. A whole-class activity could be: have one student stand in the middle of the gymnasium, holding one end of a known length of string. Then walk the other end of the string around to form a circle, placing students evenly on the imaginary circumference. When finished, you should have your students representing a fairly good circle, with one in the middle. Use the tape measure to find the diameter, using the center student for accuracy in measuring through the circle's center. Then measure the circumference as well. Calculate for Pi. Discuss real-world applications for knowing Pi to

74. History Of Mathematics: Egyptian Math, Pi, Magic Squares, Chinese Arithmetic, Me the value of pi Archimedes' method of exhaustion, Leibniz series, Machin formulausing tangents, and others. THALES, FOUNDER OF GREEK geometry (585 BCE) The http://nunic.nu.edu/~frosamon/history/bc3000.html

HISTORY OF NUMERAL SYSTEMS (4700 B.C.E.-1500 C.E.) A timeline and brief history of numeral systems were indicated from 4700 B.C. to 1500 A.D. Many cultures through-out the world had developed numeral systems for their own community technological advancement. HISTORYCAL CREATORS OF MATHEMATICAL GAMES AND THEIR BIOGRAPHIES (1850 B.C.E.-Present) Mathematical games and recreations started around 1850 BC and continued on to the present by famous mathematicians. The biographies of mathematicians who invented the games are reported including pictures and graphs in this web site. MAGIC SQUARES (2200 B.C.E.) The magic square has been studied for a long period of time. It shows how a magic square is formed and who studied the magic squares. ARISTOTLE-DEDUCTIVE LOGIC (340 B.C.E.) Aristotle wrote a book called "TOPICS" which started out with a discussion of deductive logic. The whole world reestablished this book starting with the Islamic translation on through time. HISTORY OF PI (287 B.C.E. to present time) There are a several different methods of estimating the value of pi: Archimedes' method of exhaustion, Leibniz series, Machin formula using tangents, and others. THALES, FOUNDER OF GREEK GEOMETRY (585 B.C.E.)

75. BUBL LINK: 516 Geometry Author Swarthmore College Subjects geometry, mathematics links DeweyClass 516ResourceType index Location usa pi Pages Traces the history of pi giving a http://link.bubl.ac.uk/ISC6480

BUBL LINK Catalogue of selected Internet resources Home Search Subject Menus A-Z ... About 516 Geometry Titles Descriptions Gallery of Interactive Geometry GEOLAB Geometry and Topology Geometry Center ... Pi Pages All links checked August 2001 Comments: bubl@bubl.ac.uk Gallery of Interactive Geometry A set of interactive guides and programs relevant to geometry, including the Orbifold Pinball, which explores the effects of negatively curved space, and Projective Conics, which discusses Pascal's theorem in terms of projective geometry. Author: University of Minnesota Subjects: geometry DeweyClass: ResourceType: interactive guide Location: usa GEOLAB GEOLAB (Geometry Laboratory) was created to develop the tools, techniques, and expertise necessary to streamline the grid generation process. The capabilities of GEOLAB include advanced CAD and mathematical software to generate high-fidelity surface definitions, surface grids, and volume grids. Author: NASA Langley Research Center Subjects: computer aided design, geometry DeweyClass: ResourceType: software Location: usa Geometry and Topology A fully refereed international journal dealing with all aspects of geometry and topology and their applications.

76. Math: Geometry, Measurement, Trigonometry of Hyperbolic geometry, with over 25 pages of illustrated hypertext. This sitealso provides the full, platform independent, Noneuclidean software. pi Math http://www.nhptv.org/kn/vs/mathla8.htm

Area, Volume and Surface Area Simple formula sheet. Ask Doctor Math: Geometry Archive Archived collection of geometry questions and answers from Ask Doctor Math. Circles Circle definitions and formulas. Gallery of Interactive Geometry Visit this site and build a rainbow or try your hand at Obifold pinball. Geometry This general geometry site has sections on angles and lines; conditionals, unions, and intersections; measurement formulas; constructions; Greek prefixes for polygons/polyhedra; a glossary; and sample problems. Geometry in Action: Real World Applications This site focuses on how discrete and computational geometry is used in real world applications like : design and manufacturing; graphics and visualization; information systems; medicine and biology; physical science; and robotics. Geometry Center Online The Geometry Center is a mathematics research and education center at the University of Minnesota. It is funded by the National Science Foundation as part of the Science and Technology Center program. The web site offers: interactive web and java applications, multimedia documents, hypertext papers, formulas, and downloadable software. Geometry Flashcards Set of interactive geometry flashcards.

77. Topical Workshop On Geometry And Physics Abstracts For Talks It is interesting to analyse the geometry underlying all these physical models. thepossibility of orthonormal bases of the form $g_{kn}(x) = e^{i2 \pi kx} g(xn http://www.physics.adelaide.edu.au/itp/workshops/icmpabs.html

TOPICAL WORKSHOP ON GEOMETRY AND PHYSICS ABSTRACTS: To see the abstracts of a given talk (if available) simply click on the name of the corresponding speaker (if it is highlighted) as listed in the programme. TOPICAL WORKSHOP ON GEOMETRY AND PHYSICS MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY Edwin Beggs Beth Ruskai Mikhail Shubin Mike Eastwood Paul Tod Coffee Coffee Coffee Coffee Coffee Beth Ruskai Edwin Beggs Jan Slovak Paul Tod Mike Eastwood Lunch Lunch Wine Trip Lunch Yum Cha Nalini Joshi Adam Harris Wine Mikhail Shubin Coffee Coffee Wine Coffee Jim McCarthy Bert Green Wine Jan Slovak Manfred Scheunert Ruibin Zhang Wine Matilde Marcolli Drinks Dinner Speaker Mike Eastwood Title: Involutive structures: local and global aspects Abstract: Involutive structures provide a unified way of discussing linear first order partial differential equations. Such structures are also called formally integrable and the main local question is to what extent these equations are really integrable. Hans Lewy's famous example from 1957 shows that this is a non-trivial question. I shall present the definitions and illustrate with examples. One of the most well-understood examples of an involutive structure is a complex structure. That the two notions coincide is the content of Newlander-Nirenberg theorem. Locally, that is the end of the story. Globally, however, life is much more interesting. The theory of compact complex manifolds is rich and exciting. Similar comments apply to the theory of foliations. I shall discuss the global aspects of some other examples.

78. Pi-lights pi lights. Papers. Related sites. Computational geometry at Tufts.Questions? contact erafalin@eecs.tufts.edu. Last modified 08/15/02. http://www.cs.tufts.edu/r/geometry/pi_lights/

Computational Geometry at Tufts Pi lights Papers Experimental Results for Vertex Pi-Lights , V. Brumberg, S. Ramaswami, D. Souvaine, 11th Fall Workshop in Computational Geometry, NY Postscript Related sites Computational Geometry at Tufts Questions? - contact erafalin@eecs.tufts.edu Last modified An example of an illumination of a simple polygon using pi-lights This material is based upon work partially supported by the National Science Foundation under Grant No. 9996237. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

79. SMILE PROGRAM MATHEMATICS INDEX A collection of almost 200 single concept lessons.Category Science Math Education Teaching Resources Lesson Plans...... HS; Primary geometry by pitra, Barbara Marconi Community Academy;Proving pi by Williams, Gwendolyn D. - Paul Robeson High School; http://www.iit.edu/~smile/mathinde.html

SMILE PROGRAM MATHEMATICS INDEX The SMILE website is hosted by the Illinois Institute of Technology The Mathematics lessons are divided into the following categories: Geometry and Measurement Patterns and Logic Probability and Statistics Recreational and Creative Math ... Algebra and Trigonometry , and Miscellaneous Geometry and Measurement The Pythagorean Puzzle by Earl Zwicker - Illinois Institute of Technology - Dedicated to Prof. Harald Jensen, Lake Forest College Areas of States - Estimation by Janice C. Harvey - Carver Middle School Liquid Volume by Robert Foote - Disney Magnet Spherical Geometry: A Global Perspective by William R. Colson - Morgan Park High School Geometry Distance of Triangles using a Protractor by Eileen Lally - A. Philip Randolph Magnet School Circles - Diameter, Circumference, Radius and the Discovery of Pi by Kathleen Ryan - Randolph Magnet School How To Measure Area by Levi Johnson - James Otis An Introduction to Pi and the Area of a Circle by Edwina R. Justice - Gunsaulus Scholastic Academy Area and Perimeter by Monica Starks - John Fiske Elementary Shapes (Geometric) (Lesson 2) by Violet M. Nash - Spencer Math and Science Academy

80. Sites Pédagogiques Anglophones Translate this page polyhedra - Symmetry, duality (Malheureusement des très, très gros fichiers) RidiculouslyEnhanced pi Page (The) Encore pi. Sacred geometry Coloring Book (The http://www.bib.ulb.ac.be/coursmath/mathangl.htm

Sites pédagogiques anglophones L'adresse des sites mentionnés ci-dessous est donnée sans aucune garantie. Abacus (Luis Fernandes) Calcul au boulier compteur Ask Dr. Math Résolution de questions de maths Beginner's Chess Page (The) D.Hayes Biographies of Women Mathematicians Brief History of Algebra and Computing (A) ( Jonathan P. Bowen) Calculator.com Si vous avez oublié votre calculette (en anglais, mais cela n'a aucune importance) Calculator Home Page (The) Une collection de ressources sur les calculatrices avec possibilité de chargement gratuit de Calc98. Calculus @ UTK Catalan Numbers Chess-in-the-Schools comme alternative à la violence Cinderellas Café - geometry software Software géometrique (les exemples semblent ne plus fonctionner). Calculus Nombreux et excellents applets (de 15 à 18 ans) Click-n Pro 4.0 Collection d'applets Java utilitaires (pour ceux qui voudraient construire leur site) Common Book of Pi (The) Historique de Pi et méthodes de calucul. CRC Concise Encyclopedia of Mathematics (The) (Eric W.Weisstein): Tout ce que vous avez toujours voulu savoir sur les mathématiques sans oser le demander! Dale's Pi page Un fan de pi David Joyce's html page index Beaucoup d'excellent matériel dans divers domaines!

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