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Genious Math Kids[4] Addition


by Sato Method


Developer Notes

It was introduced with the newspapers and the magazines of Japan.
Citizen Times 2007, Town information 2010, Ikuzy 2010.
The following and several famous person sent the letters to the author, Ms Kazuko Sato.
The physicist of Voyager project of NASA, Dr. Haruo Saji
Former superintendent of...