Modern Times Abacus :
Modern Times Abacus :
Modern Times: The
Suan-pan, the Soroban and the Schoty are from the period c. 1200 A.D to the
present.
Abacus is a Latin word that has its origins in the
Greek words abax or abakon (meaning “table” or “tablet”) which in turn,
possibly originated from the Semitic word abq, meaning “sand”.
The abacus is an
instrument, a manual tool invented by the Chinese 2000 years ago. We offer
training using the Japanese Soroban abacus, which is has one upper row of beads
and four lower rows.
We have found the Soroban abacus particularly effective
for teaching mathematical calculating skills to young children.
The abacus is a tool used by the Chinese since about
500 BC for the simplest of calculations: addition, subtraction, multiplication,
and division, as well as fractions and square roots.
A Chinese abacus is made
up of a wood frame divided into two parts separated by a beam, with an upper
deck of two rows of beads and a lower deck of five rows of beads. A series of
vertical rods allows the wooden beads to slide freely.
The abacus as we know it
today did not appear in China until about 1200 A.D. Over time the abacus
traveled to Japan and evolved into what it is called today: the soroban.
A
soroban is made up of a wooden frame divided into two parts separated by a
beam, with upper deck of one row of beads and a lower deck of four rows of
beads.
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