TheSaptadipPage

Research Topic    

   Abacus             Who, What, When, Where, Why, and How? 

                  ?*?*?Questions About The Abacus?*?*? 

                                                                                              1.) When was it invented?    

                                        2.) What was the Abacus used for?

                       3.) Why was it named the Abacus?

                                                              4.) What is unique about this tool?

                       5.) Who invented the Abacus?

                       6.) Where did the Abacus come from? 

                      7.) How did it affect another person's life?

                      8.) Where did it first originate from?

                        9.) How much did it cost?

                       10.) Why was the Abacus made?

                       11.) Why did they make so many different type of Abaci?

                    12.)  How do you use the Abacus?

   {All These Questions Are Answered!} 

     *To learn more about the Abacus, read the information provided below* 

The Abacus

                                                                            by Saptadip Sadhukha    

          Hey! Do you know what an abacus is? Have you ever wondered what an abacus was used for? You may be asking where did the word abacus come from? I'll tell you about this fascinating tool.

               An abacus is a counting device, also, it is a mechanical device for making calculations consisting of a frame with ascended rods along which beads or balls which is moved.  An abacus is a tool used mostly in parts of Asia and Europe. An abacus is used for performing arithmetic processes. Abaci(plural for abacus) comes from many countries of the world including Egypt, Persia, Greece, Rome, China, India, Japan, Korea, and Russia. The abacus first originated in ancient Mesopotamia. In Greek, abacus meant "calculating-table." The abacus has been around for thousands of years. The idea of the abacus spread to other countries. Nobody had a calculator back then. It was just an abacus. They used the tool for math processes. That is why there are so many types of abaci. Today, abaci cost about $10.00 to $17.00. The abacus we see today was invented by the Chinese. The Chinese had invented the abacus in century 3000 BC.

       Then, people invented the calculator which replaced the abacus. Boo Hoo! I was very sad to say that the abacus was replaced. The abacus wasn't very popular because people had invented the calculator. To know what a calculator is, go to Dc's Page Of Awesome.

Sources

• http://en.wikipedia.org/wiki/Abacus
• http://www.ideafinder.com/history/inventions/abacus.htm
• http://www.abacuslessons.com/abacus-facts.html
• http://library.thinkquest.org/C005843/english/html/history.html

*Look at the different types of abaci below, you can observe where it's origin was from* 

       The Abacus Comes From Many Places All Over The World!

(: Fun Facts :)

*Did you know?...

       That nobody really invented our abacus! According to research, people just said that the Chinese invented our abacus. His name remains anonymous. I guess we humans will never know the person who invented an "Old Calculator." They said a Chinese by the name of Lee Kai Chen invented a new style of the abacus with 4 decks. To this very day, we will not know that genius' name. Lee Kai Chen improved our abacus.

 * Did you know?...

      The abacus is very ancient in the history of mathematics. It came from ancient Mesopotamia all the way to other countries. According to others, some say that our history with mathematics starts with the abacus. The abacus was very old back then. If you are using a tool, it must mean you are using a calculating-table that brings us back from B.C.

                            *Did you know?...

         You can do addition and subtraction on an abacus. 

!!!TODAY'S LESSON!!!

Adding and Subtracting with...an ABACUS!

Operations:

1. +Addition +

   2. - Subtraction-

Click on the Links Below to See How to Add and Subtract with an Abacus

These Videos Will Tell You How To Use An Abacus

http://www.teachertube.com/viewVideo.php?video_id=8959&title=Adding_Numbers_with_an_Abacus 

http://teachertube.com/viewVideo.php?video_id=8963&title=Subtracting_Numbers_with_an_Abacus

* Did you know?...

The abacus wasn't the first counting device. Researchers say that the first counting device was fingers. Fingers was used by the cavemen.

 This man must be proud because he discovered counting.

* Did you know?...  

People stopped using the abacus because someone had invented the calculator.

This tool was the downfall of the abacus. People still use abaci today, but they use a calculator more.

                 People use this instead of an abacus.(Today)

           Types of Abaci

                                                                                       
             *                                                                                                                                                                                                                         Russian Schoty

     Chinese Suanpan

                                                                        Roman Abacus    (*Notice how there are Roman Numerals on the is abacus*)  

                                                                                                                                                Nepohualtzintzin

                                                                                              ( I Have No Idea How They Used This Abacus)

           Abacus

                           (Today)                                     

                                                  Japanese Soroban