中文版:http://www.geogebratube.org/material/show/id/6078 (Download GeoGebra file) 從活動的開始、結束及所用的時間中任何兩個已知量,透過撥動時鐘 輸入活動的開始及結束時間。撥動分針及時針,量度活動用了多少時間;或
English version: http://www.geogebratube.org/material/show/id/9312 (Download GeoGebra file) This applet helps students to find the elapsed time from the given Find
the elapsed time from the given starting time and ending time.
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