| 摘要 |
An instruction method for learning of mental arithmetic includes finger training, instruction instrument training and abstract training that are proceeded orderly and gradually in stages. The finger training mainly focuses on movements of ten fingers of user's two hands to form different gestures to match a calculation table to interpret the essentials of numeric decomposition and combination in calculations, and to practice finger exercises related to the calculations. The instruction instrument training aims to form graphics of numerals on a paper card to enable users to move and position the fingers on the paper card according to the numerals of different digits to do exercises of multi-digit calculations. The abstract training is executed after the user becomes skillful of the instruction instrument training to enable users to form naturally images of the paper card and finger movements and positions in the brain.
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