Originally posted by 飞飞杨杨 at 2005-9-19 10:15 PM: 千万别学珠心算!阻碍孩子将来的数学思维.
Originally posted by 飞飞杨杨 at 2005/9/19 22:15: 千万别学珠心算!阻碍孩子将来的数学思维.