Advanced Abacus Techniques - What's new
Page Updates
2008
▪
Linear
Equations
a Fernando Tejón technique.
(Wednesday, September 24)
▪ Off site link
Association Française de Soroban et autres Abaques
(Friday, August 1)
▪
Stchoty Le Magasin Pittoresque French language article
on the subject of Schoty. Early 19th century.
(Wednesday, July 9))
▪
Off site link abacus related words in English.
(Monday, May 12))
▪ Make a Dust Cover for your Soroban
(Saturday, March 22)
▪ Predetermine
a Unit Rod an alternative method.
(Wednesday, February 13)
▪
Calculating
Logarithms on a Soroban a Deji Adegbite technique.
(Wednesday, February 6)
2007
▪
Practice
Sheets addition, subtraction, multiplication
& division (Tuesday December 18)
▪
Add & Subtract
Hexadecimal Numbers (Wednesday November 28)
▪
Convert between Base 10
and
Hexadecimal (Sunday, November 25)
▪
Knott's 1885 article "The Abacus in its Historic and Scientific
aspects." re-typed by Nanami Kamimura.
(Thursday, November 1)
▪
Patterns in Kojima's technique for multiplication.
Added to
Multiplication (Saturday, September 29)
▪
Magic Trick
that uses
DigitSum techniques. (Thursday,
September 6,)
▪
Japanese Cube Root Algorithm
a Shane Baggs technique. (Thursday, July 12)
▪ Ekimai.com
abacus techniques with a link to purchasing soroban in
the U.K. (Wednesday, July 11)
▪ Print Lee's Abacus
(1.98 mb PDF File) print the Lee's Abacus demonstration.
(Monday, June 25)
▪ Print Abacus: Mystery of the Bead
the page offers two options for printing the manual.
(Saturday, June 17)
▪ Checking a Square Root Answer
(Monday, April 23)
▪ Off site link Better@Math~Better@Thinking (Soroban, New York City).
(Friday, March 16)
▪ Off site link
the
Abacus on Wikipedia.
(Saturday, March 10)
▪ Off site link
build practice sheets (addition, subtraction, multiplication, division).
(Friday, January 26)
2006
▪ Off site link Soroban Cymru - Soroban in the the U.K.
(Friday, December 22)
▪
Li (1959) Origins of Chinese Abacus
(735 kb PDF File)
1959 Article by Shu-T'ien Li.
(Friday, December 22)
▪ The Abacus, in its Historic and
Scientific Aspects
(1.97 mb PDF File) 1885 Article by C. G. Knott.
(Wednesday,
December 20)
▪
Site Map added to all my pages.
(Thursday November
30)
▪
Forbes.com ranks the abacus 2nd most important tool in history.
(Tuesday, November 21)
▪ League for Soroban Education
in Spanish
(447 kb PDF File) (Monday,
September 18)
▪ Dave
Bernazzani's Soroban/Abacus Handbook
(280kb PDF File) (Wednesday,
September 13)
▪ Celsius &
Fahrenheit working with negative values. Added to
Negative numbers.
(Tuesday, July 25)
▪
Cube Roots by Welton J. Crook from his book 'Abacus
Arithmetic'. (Tuesday, July 11)
▪
Kojima Square
Roots Takashi Kojima's method for extracting square
roots. (Sunday, June 11)
▪
Simple addition & subtraction
a new section added to
Abacus: Mystery of the Bead.
(Friday, May 26)
▪ Finger techniques added to
Abacus: Mystery of the Bead.
(Thursday, May 25)
▪ Further
thoughts on Mechanization added to
Abacus: Mystery of the Bead.
(Tuesday, May 23)
▪
explanation of kanji characters making up the word soroban.
(Wednesday, May 3)
▪ Find the GCD and
the LCM of two numbers using abacus techniques.
(Tuesday, May 2)
▪
Square Roots by Welton J. Crook from his book 'Abacus Arithmetic'.
(Tuesday, April 18)
▪ Cooking with Soroban abacus
techniques for your kitchen. º¿º (Friday, March 31)
▪ Off
site link Stephen Utti's multiplication practice sheets.
(Sunday, February 26)
▪ Off site link Chisenbop (finger math) tutorial.
(Saturday, January 15)
2005
▪ Square
root of 2
solved to seven decimal places. (Saturday, December 3)
▪
Digit Sum Quick Check
a quick way to check the accuracy of an answer. (Monday,
November 28)
▪
Examination examples
(85 kb PDF File) updated from Kojima's book.
(Tuesday, July 12)
▪
Complementary numbers
a Fernando Tejón technique.
(Sunday, July 10)
▪
Multifactorial multiplication
a Fernando Tejón technique.
(Thursday, June 27)
▪
Off site link Erik Peterson's java applet for
leaning Chinese suan pan.
(Friday, April 29)
▪
Modern Chinese technique
for multiplication. (Friday, April 1)
▪ Lee's
Improved Abacus new page demonstrating how Lee's Abacus works.
(Friday, March 25)
▪ Abacus: Mystery of the Bead
an abacus manual. (Friday, March 11)
▪
Off site link Fernando Tejón's Spanish language soroban pages.
(Monday, February 7)
▪
Off site link Torsten Reincke's number dictation program.
(Monday, February 7)
▪
Basic
multiplication
ideas for teaching multiplication using a soroban. (Thursday,
January 27)
▪
Soroban manual
(2.84 mb PDF File) from the League for Soroban Education of Japan.
(Saturday, January 22)
2004
▪ Off site link
Stephen Utti's soroban add/subtract practice sheets. (Tuesday, Nov
30)
▪
Negative numbers
how to multiply them. (Friday, November 5)
▪
Quotient answers where answers go on the soroban. (Saturday, September 25)
▪
Traditional Chinese
technique for multiplication. (Friday, July
23)
▪
Division Revision help page. (Wednesday, July 21)
▪
Multiplication and Decimals help page. (Tuesday, July 20)
▪
Kato Square Roots
Professor Fukutaro Kato method for extracting square roots. (Tuesday,
July 20)
▪ Long
division techniques for Chinese suan pan. (Sunday Jul 4)
▪
Short division techniques for Chinese suan pan. (Tuesday,
June 15)
▪
Takashi Kojima's multiplication
by complementary numbers. (Wednesday, May 26)
▪
Takashi
Kojima's elimination of the Initial digit of a
multiplier beginning with one. (Thursday, May 6)
▪
Division &
Multiplication Professor Fukutaro Kato method for pre-determining the unit rod. (Tuesday, March
16)