我家住在铁路边,因此,看火车、数火车、“玩”火车、坐火车便成了儿子生活中的一大爱好。一天傍晚,我们母子俩正围着算盘练习拨珠(儿子所在的小班在搞珠心算实验教学),突然,儿子说:“妈妈,这算盘就是火车,我们来玩开火车好不好?”儿子的话让我十分吃惊,但我没有去制止他的这种? My family lives on the side of the railway. Therefore, watching the train, counting the trains and “playing” the train has become a hobby in my son’s life. One evening in the evening, our mother and son were practicing beads of beads around their abacus (the son’s small class was practicing abacus experiment teaching). Suddenly, the son said, “Mom, this abacus is a train, can we play a train?” I was very surprised, but I did not stop him this?