User contributions
16 June 2010
File:Fraction.png
uploaded a new version of "File:Fraction.png"
File:Hexadecimal.png
uploaded a new version of "File:Hexadecimal.png": Retrying the failed upload
File:Hexadecimal.png
uploaded a new version of "File:Hexadecimal.png"
File:Binary.png
uploaded a new version of "File:Binary.png"
File:Nepohualtzintzin.png
uploaded a new version of "File:Nepohualtzintzin.png"
File:Schety.png
uploaded a new version of "File:Schety.png"
File:Soroban.png
uploaded a new version of "File:Soroban.png"
File:Suanpan.png
uploaded a new version of "File:Suanpan.png": removed mouse pointer in the previous image
10 June 2010
Activities/Abacus
added a new section titled Modifying Abacus
m+2
Activities/Abacus
added a new section titled Modifying Abacus
-260