Saturday 23 June 2007

C.a.R ...a geometry software

C.a.R. is a very useful geometry exploring program. It simulates compass and ruler constructions on a computer. The main screen of this software is shown below, having various tools which would help teachers as well as students to explore on geometrical facts.

I feel that whatever is not possible manually in a classroom can be easily done by using this software. Its my personal experience, that this tool has provided lots of opportunities for self exploring on various math facts which are not there in our text books but are utilised for various research projects .We are able to visualise them by just clicking the mouse button.
Some features....
1. Ruler and compass constructions can be changed by dragging one of the basic construction points. Immediately,it shows the construction on the screen by which one can check the correctness of the construction . It helps the students to gain new insight.
2. Tracks of points and animated constructions can help to understand geometric relations. Tracks can be used as new objects to explore.
3. With the macros of C.a.R. very complicated constructions become possible. Macros are also a way to organize the geometric thinking.
4. Hiding construction details and using colors make constructions clearer to read. In C.a.R. lines and circles can also be reduced to the relevant points.
5. Arithmetic computations, numerical solutions, curves and functions go beyond classical constructions. It is even possible to construct in 3D using advanced macros.
6. Other geometries, hyperbolic or elliptic, can be explored.C.a.R. is a Java driven program running on all modern platforms. Constructions and assignments can be embedded into web pages easily. It can be used free of charge.
To know more about it

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