计算,过去一直是困扰盲童的一大难题。一次偶然的机会,北京盲校校长海玉森在报上见到宇文永权速算法在普通小学实验成功的消息,便蒙生了将这种方法引进盲教实验。自今年3月起,他们从小学1—5年级选定部分盲生接受宇文永权速算法的实验。仅用25天的课余时间,运用宇文永权发明的“速算点珠器”。 Calculations, the past has been a big problem plaguing blind children. By chance, Hai Yusen, headmaster of the blind school in Beijing, saw in the newspaper the news that Yu Wenyong’s right-han algorithm had been successfully tested in ordinary primary schools. He then introduced this method to blind-trial experiments. Since March this year, from January to September of primary school, they selected some blind students to accept the experiment of Yuwen Yongquan’s speed algorithm. Only 25 days of spare time, the use of Yuwen Wing invented the “quick counting beads device.”