The use of abacus in the ALOHA Mental arithmetic program helps a child visualize and conceptualize, which is the primary function of the right hemisphere of the brain. Starting with the abacus as an initial tool to perform arithmetic calculation, the child gradually moves on to visualize the abacus in his/her mind and perform arithmetic calculations withincredibly fast timing and accuracy. Thus, the right side of the brain is also equally utilized and this results in total brain development.