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The Chinese Abacus

Christopher Braun CTCH 602, Spring 2010. The Chinese Abacus. Mental Math for creative and analytical thinking…. . Abacus History . First recorded history of using counting boards or symbolic methods such as tally sticks or notches on bones were used for calculations as far back as 2000 BC

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The Chinese Abacus

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  1. Christopher Braun CTCH 602, Spring 2010 The Chinese Abacus Mental Math for creative and analytical thinking….

  2. Abacus History First recorded history of using counting boards or symbolic methods such as tally sticks or notches on bones were used for calculations as far back as 2000 BC Used before the invention of written numbers for counting quantities larger than 10 fingers and 10 toes. The first recorded use of Abacus in China around 600 BC. The wooden Abacus as seen on the right is Chinese and was invented in 900 AD The Chinese Abacus is still being used today throughout the Orient for …. Multiplication, Division, Addition, Subtraction, Square Root and Cube Root operations Greek: Abax or Abakon

  3. Benefits of Abacus Training • Abacus Math uses the visual channel (eyes), auditory channel (ears), kinesthetic (motor memory) and tactile (hands) to learn • Establishes numeric relations in a clear and logical way for small children • Elevates memory, attention span and concentration • Activates both left brain (logic) and right brain (conceptualization) simultaneously http://www.youtube.com/watch?v=EueFhYZ4HxI&feature=related

  4. Abacus Functions • Basic Numbers • Addition • Subtraction • Multiplication • Division Quiz – Class Competition http://library.thinkquest.org/C005843/english/howto.html

  5. Abacus Humor….

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