41. Geometric Figures Fast Facts study guide for geometryrelated topics ranging from right triangles, Area is pi times the square of the radius. (pi equals approximately 3.14) http://www.mccc.edu/~kelld/page1400.html

GEOMETRIC FIGURES FAST FACTS: Take me to an interactive tutorial involving circumference and area of circles. Take me to an interactive tutorial involving perimeter and area of polygons : squares, rectangles, parallelograms, triangles, and trapezoids. Take me to a site that will give me some nice reference materials and a few memory aids. How about a site that is a comprehensive study guide for geometry-related topics ranging from: right triangles, similar polygons, ratios in special right triangles, Pythagorean Theorem, Trigonometric ratios, circles, coordinate geometry, lines, quadrilaterals, polygons, and more. A rectangle : Perimeter equals two times the length plus two times the width; Area equals the length times the width. P = 2L + 2W A = LW A square : Perimeter equals four times the side; Area equals the side squared. P = 4S A = S A circle : Diameter equals two times the radius; Radius equals diameter divided by two; Circumference equals pi times diameter or two times the radius times pi. Area is pi times the square of the radius. (pi equals approximately 3.14)

42. Molecular Geometry: Information From Answers.com Molecular geometry geometry of the water molecule Molecules have fixed Valence bond theory concerns itself with the formation of sigma and pi bonds. http://www.answers.com/topic/molecular-geometry

showHide_TellMeAbout2('false'); Business Entertainment Games Health ... More... On this page: Wikipedia Best of Web Mentioned In Or search: - The Web - Images - News - Blogs - Shopping Molecular geometry Wikipedia Molecular geometry Geometry of the water molecule Molecules have fixed equilibrium geometries bond lengths and anglesthat are dictated by the laws of quantum mechanics . The chemical formula and the structure of a molecule are the two most important factors that determine its properties, particularly its reactivity . Structure also plays an important role in determining polarity phase of matter color magnetism , and taste , among several other properties. Molecules, by definition, are most often held together with covalent bonds involving single, double, and/or triple bonds, where a "bond" is a shared pair of electrons (the other method of bonding between atoms is called ionic bonding and involves a positive cation and a negative anion Isomers are types of molecules that share a chemical formula but have different geometries, resulting in very different properties. A pure substance is composed of only one type of isomer of a molecule (all have the same geometrical structure).

43. Geometry Phi appears in many aspects of geometry and has many unique, intriguing relationshipsand Phi can be related to pi through trigonometric functions http://goldennumber.net/geometry.htm

GoldenNumber.net Home Contact Meet the Phi Guy "Phriends" in Phi ... News Phi The Golden Number Geometry SITE SECTIONS: Home Overview Design/Composition Life ... Mathematics Geometry Stock Market Theology Cosmology Other Resources IN THIS SECTION: Orthogons Penrose Tiling Quasi-crystals Bucky Balls ... Spirals Jump to any topic Home Phi Overview Acoustics Architecture Art Bible Bucky Balls Color Compositions Cosmology Credit Cards Divine Proportion Energy Fibonacci Series Fibo's 24 Pattern Five (5) and Phi Geometry Golden Section/ History Life Human Hand Human Face Human Body Human Beauty Development Human Heartbeat Human Health Body Temperatures Animals 1 Animals 2 Plants DNA Mathematics Marketing/Design Means Music Orthogons Pascal's Triangle Penrose Tiling Phi Phonetics Phi's Phormula Phi Symbol Phi to 20000 places Poetry Population Growth Powers of Phi Pronouncing Phi Quasi-crystals Quantum Time Quincy Park Solar System Spirals Stock Markets Theology Universe Affliates Do It Yourself!!! Feedback Golden Mean Gauges Use of Images Links to other sites Meet the Phi Guy News 'Phriends' in Phi Phi Logo Merchandise School Projects Search the Site Translate this site WTC Proposal Phi and Geometry Phi is one of the two great treasures of geometry Phi or , was described by Johannes Kepler as one of the "two great treasures of geometry." (The other is the Theorem of Pythagoras.)

44. InterMath | Investigations | Geometry Investigations geometry Circles Additional Investigations Rationalize pi.It is possible to approximate pi with a rational number. http://www.intermath-uga.gatech.edu/topics/geometry/circles/a13.htm

Search the Site Investigations Geometry Circles ... Additional Investigations It is possible to approximate pi with a rational number. Let's play a game where you try to approximate pi to 4 decimal places using an expression of integers (decimals not allowed) with a fraction, exponent, or combination of the two. The goal will be to get the lowest score possible. Here's how you keep score: +1 for each digit used, and +0.2 for each ten-thousandth that you are away from the actual value of pi (= 3.1416, to the nearest 4 decimal places.) For example, 314/100 is equal to 3.14; your score would be +6 for using six digits and +3.2 for being 16 ten-thousandths away from pi, giving a total of +9.2. Another example is ; your score would be +3 for using three digits and +37.8 for being 189 ten-thousandths away from pi. What is the lowest score you can find? Submit your idea for an investigation to InterMath

45. Anti-Grain Geometry - AntiGrain geometry - Version 2.3 // Copyright (C) 2002-2005 Maxim Shemanarev inline double deg2rad(double deg) { return deg * pi / 180.0; http://antigrain.com/__code/include/agg_basics.h.html

// Anti-Grain Geometry - Version 2.3 // Permission to copy, use, modify, sell and distribute this software // This software is provided "as is" without express or implied // warranty, and with no claim as to its suitability for any purpose. // Contact: mcseem@antigrain.com // mcseemagg@yahoo.com // http://www.antigrain.com #ifndef #define #include " agg_config.h " // Default basic types // If the compiler has different capacity of the basic types you can redefine // them via the compiler command line or by generating agg_config.h that is // empty by default. #ifndef #define signed char #endif #ifndef #define unsigned char #endif #ifndef #define short #endif #ifndef #define unsigned short #endif #ifndef #define int #endif #ifndef #define unsigned #endif #ifndef #if defined defined BORLANDC #define signed #else #define signed long long #endif #endif #ifndef #if defined defined BORLANDC #define unsigned #else #define unsigned long long #endif #endif // Some fixes for MS Visual C++ #if defined #pragma warning disable: // Identifier was truncated... #endif #if defined #define forceinline #else #define inline #endif namespace agg typedef typedef typedef typedef typedef typedef typedef typedef typedef unsigned char enum pi const double pi inline double double deg return deg pi inline double double rad return rad pi template class T struct typedef T T x1 T y1 T x2 T y2 T x1_ T y1_ T x2_ T y2_ const normalize T t if t t if t t return this bool clip const r if r r if r r if r r if r r return bool const return template class Rect inline

46. Urban Legends Reference Pages: Religion (Alabama's Slice Of Pi) pi is merely an artifact of Euclidean geometry. Humbleys is working on a theorywhich he says will prove that pi is determined by the geometry of http://www.snopes.com/religion/pi.htm

Alabama's Slice of Pi Claim: Responding to pressure from religious groups, Alabama's state legislature redefined the value of pi from to 3 in order to bring it in line with Biblical precepts. Status: False. Example: [Collected on the Internet, 1998] introduced without fanfare by Leonard Lee Lawson (R, Crossville), and rapidly gained support after a letter-writing campaign by members of the Solomon Society, a traditional values group. Governor Guy Hunt says he will sign it into law on Wednesday. The law took the state's engineering community by surprise. "It would have been nice if they had consulted with someone who actually uses pi," said Marshall Bergman, a manager at the Ballistic Missile Defense Organization. According to Bergman, pi is a Greek letter that signifies the ratio of the circumference of a circle to its diameter. It is often used by engineers to calculate missile trajectories. Prof. Kim Johanson, a mathematician from University of Alabama, said that pi is a universal constant, and cannot arbitrarily be changed by lawmakers. Johanson explained that pi is an irrational number, which means that it has an infinite number of digits after the decimal point and can never be known exactly. Nevertheless, she said, pi is precisly defined by mathematics to be "3.14159, plus as many more digits as you have time to calculate". "I think that it is the mathematicians that are being irrational, and it is time for them to admit it," said Lawson. "The Bible very clearly says in

47. Geometry Lesson Plans Over 1000 lessons for math teachers! geometry Lesson Plans. Discovering piMany students tend to memorize, without understanding, formulas that we use http://www.teach-nology.com/teachers/lesson_plans/math/geometry/

Curriculum Lesson Plans Organizers Rubrics ... 3-D Drawing and Geometry - In this geometry unit you will see some different types of 3-D drawings, and learn how to do these drawings yourself. You will also explore many interesting careers that use these techniques, from architecture to movies. Buckyballs - Students wondering why we study about polyhedral can find one reason by looking through the information in the links to Buckyballs. - Students studying polyhedral enjoy seeing the structures as they occur in the real world. Crystalline structures can be categorized into seven crystal systems. Designs with Circles - In the Islamic culture the circle is a unit of measure. The circle is the basis for the organization of space. It is a starting point in architecture, poetry, music and even calligraphy. Discovering Pi - Many students tend to memorize, without understanding, formulas that we use in geometry or other mathematical areas. This particular activity allows students to discover why pi works in solving problems dealing with finding circumference. Dueling Pinwheels - Dazzle your students with this so-cool animated introductory exercise.

48. Solution For /geometry/hole.in.sphere Solution to the /geometry/hole.in.sphere problem big circle radius is R littlecircle radius is r 2 2 area of donut = pi * R pi * r 2 2 = pi * (R - r http://rec-puzzles.org/sol.pl/geometry/hole.in.sphere

Solution to the /geometry/hole.in.sphere problem The volume of the leftover material is equal to the volume of a 6" sphere. First, lets look at the 2 dimensional equivalent of this problem. Two concentric circles where the chord of the outer circle that is tangent to the inner circle has length D. What is the annular area between the circles? It is pi * (D/2)^2. The same area as a circle with that diameter. Proof: big circle radius is R little circle radius is r 2 2 area of donut = pi * R - pi * r 2 2 = pi * (R - r ) Draw a right triangle and apply the Pythagorean Theorem to see that 2 2 2 R - r = (D/2) so the area is 2 = pi * (D/2) Take a general plane at height h above (or below) the center of the solids. The radius of the circle of intersection on the sphere is radius = srqt(3^2 - h^2) so the area is pi * ( 3^2 - h^2 ) For the ring, once again we are looking at the area between two concentric circles. The outer circle has radius sqrt(R^2 - h^2), The area of the outer circle is therefore pi (R^2 - h^2) The inner circle has radius sqrt(R^2 - 3^2). So the area of the inner circle is

49. Common Geometric Formulas@Everything2.com Volume = (1/3) pi r2h Lateral Surface Area = pi r(r2 + h2) analytic geometry Book I Definitions cartesian coordinates polar geometry http://www.everything2.com/index.pl?node_id=657063

50. History Of Mathematics - Table Of Contents Topics include background in Babylonian, Euclid, Al'Khwarizmi, pi, and trigonometry. Also has recreations and java chat. http://members.aol.com/bbyars1/contents.html

And Insights into the History of Mathematics Table of Contents Prologue The First Mathematicians The Most Famous Teacher Pi: It Will Blow Your Mind ... Comments and Notices

51. ENC Online: ENC Features: Classroom Calendar: Pi Day (Grades 6-12) Celebrate pi day by having students create and display pi day cards, pi day poems, An applet for middle and high school geometry students that lets them http://www.enc.org/features/calendar/unit/0,1819,34,00.shtm

Skip Navigation You Are Here ENC Home ENC Features Classroom Calendar Search the Site More Options Don't lose access to ENC's web site! Beginning in August, goENC.com will showcase the best of ENC Online combined with useful new tools to save you time. Take action todaypurchase a school subscription through goENC.com Classroom Calendar By Category By Month ... Ask ENC Explore online lesson plans, student activities, and teacher learning tools. 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. Pi Day (Grades 6-12) March 14 Graphic: Brian Deep Because pi (the ratio of the circumference of a circle to its diameter) is an important concept in mathematics and science, March 143/14has been proclaimed as a special "pi day." Scientists have explored the concept of pi, an irrational number, beginning perhaps as far back as 4000 years ago and continuing right up to the present. Early evidence of the use of pi can be found in civilizations ranging from Ancient Babylon to Greece, Egypt, and China. In fact, some time between A.D.

52. ENC Online: Curriculum Resources: Browse: Mathematics> Geometry> Pi Use ENC s carefully chosen subject terms to locate materials in the collection. http://www.enc.org/resources/browse/0,,0-100-294-1137_1_0-0-0,00.shtm

Skip Navigation You Are Here ENC Home Curriculum Resources Browse Search the Site More Options Don't lose access to ENC's web site! Beginning in August, goENC.com will showcase the best of ENC Online combined with useful new tools to save you time. Take action todaypurchase a school subscription through goENC.com Classroom Calendar Digital Dozen ENC Focus ... Ask ENC Explore online lesson plans, student activities, and teacher learning tools. Search Browse Frequently Asked Questions Resource of the Day ... About Curriculum Resources 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. 15 Records Sorted by Date Use these menus to limit browse results using specific criteria Grade: All Grade Levels Pre-K to 2 3 to 5 6 to 8 9 to 12 Post Sec. Media Type: All Media Types Only Web Sites Excluding Web Sites Cost: All Costs Low Cost (Less than $50) Free Return to Subject Tree Modify using Advanced Search Math through the ages : a gentle history for teachers and others Featured in ENC Focus Date: Grade(s): 7 - Post Sec.

53. Riverdeep | Tangible Math | Geometry Inventor | Circles And Pi Unit, geometry Inventor. Activity, Circles and pi Show that pi is the ratiocircumference/diameter and that it is a constant equal to ~3.14. http://www.riverdeep.net/math/tangible_math/tm_activity_pages/geometry_inventor/

Home Login Store About Us ... Dorling Kindersley CD-ROMs Site Search By Grade Elementary (PreK-6) Middle School (6-9) High School (9-12) Teacher Support Destination Math Tangible Math Correlations edConnect To find support materials for Tangible Math activities, including lesson plans and student handouts, you will first need to select a Tangible Math unit using the tabs below and then a specific activity listed underneath. Product Tangible Math Unit Geometry Inventor Activity Circles and Pi Overview Students: Show that a circle is the path of a point moving so that it is a fixed distance from a fixed point. Show that a circle divides a plane into three regions: inside, on, and outside the circle. Show that pi is the ratio circumference/diameter and that it is a constant equal to ~3.14. User Name: Password: Support About Us Contact Us Become a Riverdeep Reseller ... Terms and Conditions Questions? Call

54. Math In Daily Life -- Home Decorating pi The NeverEnding Number. When you start playing with geometry, It s avery useful number in geometry. The approximate value of pi is 3.14159, http://www.learner.org/exhibits/dailymath/pi.html

A Common Book of Pi Facts, formulas, and articles about pi from a mathematics professor. The Pi Pages Everything you ever wanted to know about the number pi: its history, how many decimal places it's been calculated to, and much more. The Pi Trivia Game Think you know everything there is to know about pi? Try this trivia game and test your knowledge. Pi: The Never-Ending Number When you start playing with geometry, you eventually come across the concept of pi . When you divide the circumference of a circle (the measurement of its perimeter) by its diameter (the width across its middle), you always get the same number. That number is pi. Whether you're measuring a large circle or a small circle, the circumference divided by the diameter always equals pi. Once you know the value of pi, you can easily figure out a circle's circumference, diameter, or area. It's a very useful number in geometry. The approximate value of pi is 3.14159, if you round it off to make it easier to use in equations. In reality, pi is an infinite number. You can't accurately express it as a fraction (like 1/3 or 5/10) and it never repeats (like 3.333333 or 2.148148148). No matter how long or how hard you look, you'll never find a pattern in the numbers. Mathematicians have calculated pi to billions of decimal places, but still have not found any pattern or repetition to the numbers. Pi has a long history. The earliest mention of the idea was in an Egyptian papyrus dating to more than 3,500 years ago. The Egyptians understood that the ratio of a circle's circumference to its diameter was constant. They expressed pi using fractions, and figured it as (4/3)

55. MID-ATLANTIC GEOMANCY: Sacred Geometry 3 pi (3.1416 1) is found in any circle. In sacred geometry, the circle representsthe spiritual realms. A circle, because of that transcendental number pi, http://www.geomancy.org/sacred_geometry/sacgeo-2.html

- Pi - 3.1416 : 1 - the Circle The Circle: Radius (CD) = 1 Diameter (AB) = 2 Circumference = pi (3.1416) x Diameter Pi (3.1416 : 1) is found in any circle. In sacred geometry, the circle represents the spiritual realms. A circle, because of that transcendental number pi , cannot be described with the same degree of accuracy as the physical square. The circle is yin It is a good shape to do all kinds of spiritual activities in. It is good for groups to work in circles. There are many examples of sacred spaces that are circular. Ring of Brodgar, Mainland Orkney. Most stone rings in the British isles are not actually circular. Dr Alexander Thom proved this with his pioneering work in the sixties. Some of the true circles are Merry Maidens in Cornwall, Stonehenge and the Ring of Brodgar.

56. Piguy's Math Page This page has dozens of math calculators, making all sorts of math, from algebra to arithmetic to geometry, easier. Also, 50,000 decimals of pi and a logarithm table. http://www.geocities.com/CapeCanaveral/Hall/1216/

Piguy's revised Math Page and better Calculators Comp. Programs Numbers/Tables Piguy's Math Page is back with more online calculators, new downloadable computer programs, complete logarithm tables, and much more! Take a look: Online Calculators (Now, only the best!) Math Computer Programs (Written by me in C++!) Numbers and Tables (Pi, e, logs, interest, and more!) Want more? Ok: Spanish-English Math Dictionary Wolfram's MathWorld Ask Dr. Math

57. Fields Institute - 2005 Great Lakes Geometry Conference 2005 Great Lakes geometry Conference pickup at Fields at 730am, arrive atpi at 900am Depart pi at 515pm, arrive at Fields at 645pm http://www.fields.utoronto.ca/programs/scientific/04-05/GLGC/

SCIENTIFIC PROGRAMS AND ACTIVITIES September 25, 2005 Home About Us NPCDS/PNSDC Mathematics Education ... Search April 30 - May 1, 2005 Sponsoring Institutions: 2005 Great Lakes Geometry Conference at Perimeter Institute for Theoretical Physics Scientific Committee: Ronald Fintushel Robert Myers Yongbin Ruan Organizing Committee: Hans U. Boden B. Doug Park Mainak Poddar Perimeter Conference Coordinator: Jessica Harrison Photo Gallery Conference Schedule Local Maps ... Live Classical Music Concert By The Perimeter Ensemble Mailing List To receive updates on Fields sponsored activities please subscribe to our mailing list at: www.fields.utoronto.ca/maillist Speakers: Michael Anderson , State University of New York at Stony Brook Kai Behrend , University of British Columbia John Etnyre , University of Pennsylvania Tatyana Foth , University of Western Ontario Sergei Gukov , Clay Mathematics Institute Francois Lalonde , Universite de Montreal John Lott,

58. American Renaissance News: State Plays Orwellian With Columbus pi, geometry, numbers, astronomy, surgery among a few other things. geometry was in fact a European invention, which the Egyptians quickly adapted http://www.amren.com/mtnews/archives/2004/08/state_plays_orw.php

Home Previous Story Next Story View Comments ... State Plays Orwellian with Columbus AR Articles on Liberal Myths What Really Happened? (Jan. 2003) (On Japanese relocation camps.) How Legends are Created (Apr. 1994) (On George Washington Carver.) The Truth About Tuskegee (Feb. 3, 2004) More news stories on Liberal Myths Robert Spencer, FrontPageMagazine.com, Aug. 26 George Orwell knew that if you can control a people’s past, you can control its present; that’s why in 1984 he has a whole government department—the Ministry of Truth—devoted to rewriting history. Now, twenty years beyond Orwell’s nightmare year, we call the Ministry of Truth the State Department: in a press release issued Monday, “Islamic Influence Runs Deep in American Culture,” Phyllis McIntosh of State’s Washington File burbles that “Islamic influences may date back to the very beginning of American history. It is likely that Christopher Columbus, who discovered America in 1492, charted his way across the Atlantic Ocean with the help of an Arab navigator.” Rewrite the history books, indoctrinate the children, and you can own the future. The bit about the Arab navigator is not just being put out by State, but will also be taught in Massachusetts public schools this year. Some lucky Massachusetts teachers were treated all of last week to a workshop called “The Genesis and Genius of Islam.” It featured professors from Boston College, College of the Holy Cross, Harvard, and Bridgewater State College, including Ibrahim Kalin, assistant professor of religious studies at Holy Cross. According to a local Massachusetts paper, Kalin said that “Islamic sailors were the best seamen of the day,” and “noted that even Christopher Columbus had several Muslim sailors on his voyage that wound up in the New World.”

59. Kappa Delta Pi Record: Geometry Full text of the article, geometry from Kappa Delta pi Record, a publicationin the field of Reference Education, is provided free of charge by http://www.findarticles.com/p/articles/mi_qa4009/is_200201/ai_n9061291

@import url(/css/us/style1.css); @import url(/css/us/searchResult1.css); @import url(/css/us/articles.css); @import url(/css/us/artHome1.css); Home Advanced Search IN free articles only all articles this publication Automotive Sports FindArticles Kappa Delta Pi Record Winter 2002 Content provided in partnership with 10,000,000 articles Not found on any other search engine. Featured Titles for ASA News ASEE Prism Academe African American Review ... View all titles in this topic Hot New Articles by Topic Automotive Sports Top Articles Ever by Topic Automotive Sports Geometry Kappa Delta Pi Record Winter 2002 by Perreault, George Save a personal copy of this article and quickly find it again with Furl.net. It's free! Save it. In My View I've never been much for math, except that I was pretty good at algebra for a while (partly because it was like a detective story, but mostly because my teacher looked like Grace Kelly). Regardless, it was never as bad for me as it was for my friend, Nancy. She went to junior high in the Missouri bootheel during the Eisenhower years, and her school had bought into the idea of tracking, big time. Not only were the grades divided into achievement groups one through five, within each group the students were ranked by seat. If you had the first seat in Social Studies for group 7-1, you were at the top of the heap. You knew it, and so did everyone else. You could also be the last seat in 7-5. This was the rule in every subject area, and, based on the previous week's work, seats were reassigned every Monday morning.

60. Pi Day Since pi to four decimal places is 3.1415, March 15 is Little pi Day . In geometry classes, students spent the two days working on investigations at http://www.nvnet.org/nvhs/dept/math/pi.html

Pi Day While the middle of March is most renown as the ides of March, for the Mathematics Department of Northern Valley Regional High School March 14 (3.14) is "Pi Day". Since pi to four decimal places is 3.1415, March 15 is "Little Pi Day". To celebrate these days, mathematics teachers organized some unconventional activities revolving around the importance of pi. In Geometry classes, students spent the two days working on investigations at seven "stations". Twice during the course of the day, three teachers mixed their classes so that groups working at the "stations" comprised students from different ability groups. What better way to share the "values" of pi! Pizza "pis" were seen in several teachers' classes, as well as "pi" snacks (sugar free, of course). Pi Day is the invention of Demarest mathematics teacher Pat Karpinski, and each year it is becoming a bigger and bigger event. This year, mathematics teachers Debra Baker, Danielle DeFuria, Jim Hall, Mike McElduff, Ray Siegrist, and April Vella participated in the Pi Day activities, as could be evidenced their Pi Day T-Shirts. (Sorry, these are collectors' items and cannot be purchased.) Anyone interested in receiving worksheets, etc. should contact

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

Page 3     41-60 of 201    Back | 1  | 2  | 3  | 4  | 5  | 6  | 7  | 8  | 9  | 10  | 11  | Next 20