國立臺灣師範大學資訊教育研究所Lan, Yu-JuTan, Ning-ChunLin, Che-WeiSung, Yao-TingChang, Kuo-En2014-10-302014-10-302008-05-30http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/34466A mobile- device-supported problem-based computational estimation instruction for elementary school students