王世勛shyh-Shin Wang2019-08-122019-08-122016-08-??http://rportal.lib.ntnu.edu.tw:80/handle/20.500.12235/81019將平面上的直線由斜率觀點回溯到移動量觀點A discussion on the Cartesian coordinated plane: by backtracking slope to the amount of movement perspective