To explore the influence of mental abacus calculation training on children s early perception of additive mental calculation,32 children were investigated through two-digit additive mental calculation by event-related potentials(ERPs) technology.

Conclusion Mental abacus calculation can enhance the information processing in some brain areas, and improve the utilization efficiency of neural resources.

In this e-times, it is of much importance to show students the access to mastering the skill of calculation with an abacus-one of our traditional treasures.

In this paper the author points out the algorithm of reckoning by the abacus in SUAN FA TONG ZONG, focuses the analysis of the new algorithm, and expounds the importance of the algorithm in researching and teaching of reckoning by the abacus.

Academician Prof.Wu Wen-tsun's Concerns to the Development of Chinese Abacus

According to the characteristics of abacus teaching,innovative teaching characterized by independent learning and cooperative exploration is adopted.

with computer used widely, a kind of calculating tool, abacus, dose not disappear, but more and more people like to use it when they deal with small scope of calculation, because it has its own special calculating principles and culture.

Electroless plating Co-P alloy on the surface of fly ash cenospheres;

Nanocomposite microwave absorbing coatings were prepared by using prepared Ni-Co-P/CNT and Ni-Co-P/fly ash cenospheres composite powders as absorbers,choosing epoxy resin as film forming resin and adding some proper solvent,curing agent and auxiliary agents.