動態幾何軟體對學習幾何學(2D/3D)非常有用，尤其當學生可以自主操控軟件時，觀察到點、線、面之間的關係及變化。 在網上學習課程中，很多例子都是以 C.a.R. 軟件展示，學生不需特別去安裝及下載，只要在瀏覽器內安裝了Java插件(可到Java網站下載 http://www.java.com/en/)。 而其他軟件例如 Geogebra, The Geometer's Sketchpad and Cabri 3D / Cabri II Plus 等都是香港中學較常用的動態幾何軟體。 Dynamic / Interactive Geometry Software is very useful in learning 2D/3D geometry. It is a valuable experience for students to use the software to create / modify the points, line segments and planes. By modifying these geometric objects and observing their relationship, students can visualize the variations which are difficult to be presented on blackboard and textbook. In the web-based learning course (mathematics), many examples are illustrated by the software named C.a.R. Students are not necessary to download C.a.R. to view these examples. The C.a.R. examples will run on the browser with Java plug-in, which can be obtained in Java Web Site at http://www.java.com/en/). Other software packages like Geogebra, The Geometer's Sketchpad and Cabri 3D / Cabri II Plus are commonly used in secondary schools. 參考網址 Reference: http://en.wikipedia.org/wiki/List_of_interactive_geometry_software