作者：陈志锐博士、杨侨钏 Dr Tan Chee Lay, Mr Yang Chiao-Chuan
小朋友，你们坐过三轮车吗？爸爸、妈妈或老师在小时候有没有坐过三轮车？如果有个老太太坐了三轮车，不知道怎么付钱，小朋友可以帮帮忙吗？ My dear friends, have you ever taken a ride on a “three wheeled cart”? Have your parents or teachers taken a ride on a “three wheeled cart” when they were kids? An old lady took a three wheeled cart ride and did not know how to pay the fee. Could you give her a helping hand?