Following are some useful links to learn about Abacus and Mental Calculation.

   
   
   
   
   
   
   
   
   



The ABACUS The ABACUS Lego Abacus Lego Abacus Tomoe Soroban (Japan) Tomoe Soroban (Japan) Soroban in Singapore Fun Brain Fun Brain Math in Daily Life Math in Daily Life League for Soroban Education Abacus/PBS Abacus/PBS Bable Fish For Translation