1. Abacus - Wikipedia, The Free Encyclopedia An abacus (plurals abacuses or abaci), also called a counting frame, is a calculating tool for performing arithmetic processes. Nowadays, abaci are often http://en.wikipedia.org/wiki/Abacus

Abacus From Wikipedia, the free encyclopedia Jump to: navigation search A Chinese abacus Calculating-Table by Gregor Reisch: Margarita Philosophica, 1508 For other uses, see Abacus (disambiguation) An abacus also called a counting frame , is a calculating tool for performing arithmetic processes. Nowadays, abaci are often constructed as a wooden frame with beads sliding on wires, but originally they were beads or stones moved in grooves in sand or on tablets of wood, stone, or metal. The abacus was in use centuries before the adoption of the written modern numeral system and is still widely used by merchants and clerks in China, Japan, Africa, India and elsewhere. The user of an abacus is called an abacist ; he or she slides the beads of the abacus by hand. Contents Etymology Mesopotamian abacus Egyptian abacus Greek abacus ... edit Etymology The use of the word abacus dates from before 1387, when a Middle English work borrowed the word from Latin to describe a sandboard abacus. The Latin word came from abakos , the Greek genitive form of abax ("calculating-table"). Because

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5. Chinese Culture: Abacus In Asian countries it is not unusual to see shopkeepers and street vendors using an abacus to calculate invoices, especially where electricity is not http://www.qi-journal.com/culture.asp?-token.SearchID=Abacus

6. Abacus Law Office Software abacus law legal software is law office software providing case management, calendaring, accounting, and legal time billing for lawyers and law office http://www.abacuslaw.com/

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7. MobileWear By Abacus Caller ID Watch With Bluetooth Technology www.abacuswatches.com/ 2k - Cached - Similar pages abacus in various number systemsabacus is probably the first of calculating devices. Encyclopædia Britannica traces the word abacus to the Phoenician abak (sand). http://www.abacuswatches.com/

8. Home - Abacus Gallery A selection of things from our abacus stores in Maine including our 2006 abacus Calendar and giclee prints by Dana Heacock. http://www.abacusgallery.com/

Home Calendars Dana's Prints On-line Shop ... Submissions Watch our Video requires Quicktime high bandwidth low bandwidth Welcome to our on-line boutique! We are proud to bring you the twenty-second edition of our calendar with brand new artwork for the year 2008 by Dana Heacock. Twelve fresh posters to brighten your home or workplace throughout the year, each one an offset lithograph suitable for framing in one of our frames or one of yours. While you are here be sure to visit Dana's Prints to see favorite images without calendar graphics. NEW! We had added a section featuring the elegant jewelry of Ed Levin. Also new in the on-line shop, Hardware Handbags made from sturdy, stylish marine vinyl in a variety of sizes and bold colors. Take a look at the dynamic new lamps in our lighting section. The wait is over! The second book by Daniel Merriam is now in stock and ready to ship. This beautiful collection picks up where the first book left off, showing some of Daniel's best images from the last ten years. Every fan and collector needs this book. Order early to avoid disappointment. Hardcover, 128 pages. THE EARLIEST ORDERS WILL BE FILLED WITH SIGNED COPIES. QUANTITIES LIMITED! Want to know about upcoming events, sales and the release of the 2009 calendar? Click "newsletter signup" in the menu.

9. Standard Abacus Standard abacus. abacus Guide Book. Manual for xabacus (similar X program). Java Source. http://www.tux.org/~bagleyd/java/AbacusApp.html

Standard Abacus ABACUS Guide Book Manual for xabacus (similar X program). Java Source

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11. The Abacus: Index Introduces the abacus, relates its history, and shows how to perform basic mathematical operations on it. Also answers questions about the ancient tool and http://www.ee.ryerson.ca/~elf/abacus/

Selected by Scientific American as a winner of the 2003 Sci/Tech Web Awards. Contents Introduction Construction Basics Java Applet Technique The Abacus Today History Timeline Salamis Tablet Counting Board Roman Hand Abacus Suan Pan Soroban Schoty Nepohualtzitzin Khipu Lee Abacus Interactive Abacus Tutor Sarat Chandran and David A. Bagley's incredible Java abacus with a built-in tutor for counting, addition and subtraction. Calculations Addition Subtraction Square Roots Cube Roots The Lee Abacus The manual for the Lee Abacus, c. 1958 is available as Text Images The Abacus as Art Michael Mode builds exotic abaci as art objects. Abacus: Mystery of the Bead Articles, Excerpts and Analysis The Abacus vs.The Electric Calculator In 1946, a contest held in Tokyo, pitted an abacus against an electric calculator; the abacus won, of course. Feynman vs. The Abacus Richard Feynman battles against the abacus; the result is not surprising (if you know Feynman). Comparing the Chinese and the Mesoamerican Abacus An analysis contributed by David B. Kelley. The Roman Hand-Abacus An analysis contributed by Steve Stephenson.

12. Abacus Technology Corporation Provides enterprise information technology and business services. http://www.abacustech.com/

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13. Grace Church School Monthly contest available in 3 age groups from 3rd grade to 8th grade. http://www.gcschool.org/pages/program/Abacus.html

posts eight problems a month in each age group. Students are asked not only to solve the problems but also to present the reasoning in their solutions. If a student submits an incorrect solution or is simply having trouble with a problem, a teacher will offer hints as to how to go about solving the problem, giving students multiple chances to succeed. This, the Eleventh Annual ABACUS International Math Challenge, starts in September 5, 2007 and ends on April 30, 2008. Age categories Group A Group B Group C How to participate Solve the problems in your group and send your solutions to us. If you are in Group A , send your responses to Tivadar Diveki: diveki@gcschool.org If you are in Group B , send your responses to Prof. Patrick J. Sullivan: Abacus.56@valpo.edu If you are in Group C Abacus.c@valpo.edu In your first e-mail, please indicate your name, your grade/age, the name of your school, and the city where you live. Make sure that you indicate the number of the problem you are responding to. For proper identification, every e-mail you send should include your name Try to send your answers by the last day of the month for the posted problem, however solutions to any of the problems will be accepted until April 30, 2008. (You are welcome to participate in higher age groups by solving their problems.)

14. Illuminations Electronic Abacus This applet explores the use of an abacus model for representing numbers and for performing addition. NCTM Resources. I Can Count the Petals of a Flower http://illuminations.nctm.org/ActivityDetail.aspx?ID=8

15. Train Simulator World / Abacus Main Page abacus Delivering Quality Products Since 1978 abacus Home. TrainSimulatorWorld.com and TrainSimDownloads.com are operated by abacus http://trainsimulatorworld.com/

16. Abacus Construction Index: Recommended Construction Industry Websites Directory of recommended websites and online documents on USA and UK building and construction. http://www.construction-index.com/

Abacus Construction Index Welcome to Abacus Construction Index , which incorporates Archinet UK. A professionally edited directory of more than 1,000 recommended websites relevant to construction in the USA and UK, it covers manufacturers, advisory websites, associations, and portals. More on Abacus Construction Index ... Find ANY word Find ALL words Find EXACT phrase Help Popular USA topics: Bathroom Showers Bathroom Vanities Bathtubs Bifold Doors ... Wood Doors Popular UK topics: Bifold Doors Bricks Concrete Blocks Concrete Paving ... Vinyl Tiles Portals: Archbone Beesker Building Design Homeone Australia ... Stone Network Publisher: Abacus Construction Index is a professionally edited directory of recommended construction websites, published by Extonet Ltd which also publishes Lives Retold . It is financed only by Google advertisements; no payment is received from included websites. Return to Home Page About This Website USA Resources UK Resources ... Acknowledgements

17. Chinese Abacus The abacus will then show you step by step the movements necessary to perform the addition or subtraction. Related Links http://www.mandarintools.com/abacus.html

Chinese Abacus Type in a number, select "Add" or "Subtract", and then click on "Show Steps". The abacus will then show you step by step the movements necessary to perform the addition or subtraction. Related Links: The Abacus : The Art of Calculating with Beads Chinese Abacus entry in Wikipedia. Soroban : Japanese Abacus Tutorial Mystery of the Bead : Abacus Instruction Manual The Chinese Abacus The Abacus Handbook Java Abacus I'm interested in hearing your ideas and suggestions for this tool. Please visit my contact page with your comments. If you came to this page directly, you might also want to take a look at some of my other on-line Chinese tools

18. Abacus www.eduref.org/cgibin/printlessons.cgi/ Virtual/Lessons/Social_Studies/Anthropology/ANT0200.html - Similar pages abacusejournals.ebsco.com/direct.asp?JournalID=100800 - Similar pages abacus.netabacus.net is an online exchange platform for the insurance industry that enables program managers to distribute insurance programs to retail brokers. http://www.eduref.org/cgi-bin/printlessons.cgi/Virtual/Lessons/Social_Studies/An

Search Lessons Write a Lesson Plan Guide Selection Criteria Printer friendly text Lesson Plan #: AELP-ANT0200 Abacus Golden Legacy Curriculum Sample Lesson Plan Source: Chinese Historical and Cultural Project P.O. Box 70746 Sunnyvale, CA 94086-0746 Email: legacy@chcp.org http://www.chcp.org/golden.html Date: Grade Level(s): Subject(s): Social Studies/Anthropology Social Studies/World History Objectives Students will understand the main concept of the abacus, a counting tool for arithmetic. Students will make an abacus and be able to demonstrate simple numbers, addition and subtraction. Background Information for This Lesson People have counted, added and subtracted with an abacus since ancient times. The name comes from the Greek word, abax, meaning "board" or "calculating table." While there is no actual record of who invented the abacus, it is depicted in a sketch book written during the Yuan Dynasty (14th Century) and there at least more than 600 years old. Webster's dictionary defines abacus as a "frame with beads or balls sliding back and forth on wires on in slots, for doing or teaching arithmetic." Arithmetic includes addition, subtraction, multiplication and division. The abacus can also be used to work with fractions and with finding square and cube roots. The advantages of its use over pencil or pen arithmetic is time . It is faster than writing down the problem and solving it. When working with the abacus one just needs to be accurate. You leave the memory work to the abacus frame.

19. Abacus An abacus is a calculator used first by the Chinese since about 500 BC, for addition, subtraction, multiplication, and division, as well as fractions and http://www.smm.org/boghopper/Abacus.html

Abacus What is an abacus? An abacus is a calculator used first by the Chinese since about 500 BC, for addition, subtraction, multiplication, and division, as well as fractions and square root. It consists of a wood frame divided into 2 parts separated by a beam, with an upper deck of 2 rows of beads and a lower deck of 5 rows of beads. There is a series of vertical rods on which wooden beads are allowed to slide freely. Its inventor is unknown. However, the abacus as we know it today did not appear in China until about 1200 A.D. How did it get its name? Abacus comes from the Greek word "abax" which means calculating board or calculating table. Are the Chinese the only users of abaci? No, in fact the Japanese used it in about 1600 AD, but they call it a soroban . Earlier than this, however, was a discovery of one made by the Aztec in use about 900 to 1000 AD, where the counters (beads) were made from kernels of corn threaded through a string attached to a wood frame. Abaci are still in use in Asia. What is the function of the beads?

20. Free Math Worksheets Kid s abacus 2.0 is a Free Math Worksheets based Software using a Graphical method of learning the Numbers and Counting from 1 to 100. http://www.caltrox.com/products/abacus.htm

Caltrox Software Systems : Home Products Downloads Reviews ... About Us Free Math Worksheets Introduction to Kid's Abacus 2.0 Kid's Abacus 2.0 is a Free Math Worksheets based Software using a Graphical method of learning the Numbers and Counting from 1 to 100. The Free Math Worksheets based software has been designed for ease of use, fast setup and interactivity. Full Audio-Visual and Multimedia features have been built into the program to make learning the basics of Numbers and Counting an enjoyable learning math experience for children with math lesson plans. [Screenshot] Features: Count from 1 - 100 using Graphic Objects 5 different Picture Objects to Count Speech Synthesizer to aid in counting Fully Multimedia based with audio-visual output Easy to use and Windows based interface specifically designed for children [More Screenshots] System Requirements 166 Mhz Processor or greater Sound-Card Color Monitor Operating Systems Windows 95/98/Me Windows NT/2000/XP

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