中文版: http://www.geogebratube.org/material/show/id/6074 (Download GeoGebra file)
相關工作紙及教育局「網上學與教支援」資源

拖拉滑桿及點擊 ＋、－按鈕調校時鐘。正確地讀出時鐘所顯示的時間。
勾選方框顯示時間、鐘面及數字鐘。

English version: http://www.geogebratube.org/material/show/id/9226 (Download GeoGebra file)

Drag the slider and click the ＋ and － buttons to set the clocks. Tell the time from the clocks.
Check the boxes to show the time, the clock face and the digital clock.