GeoGebra, itself completely free, the interface can see purple, and it can calculate and draw, which is equivalent to a handheld graphic calculator with a price of 1,000 yuan.

Xp version is version 5.0, which needs to be installed.

Baidu search GeoGebra, official website is obvious. Version 5.0 can be downloaded, and the domestic download speed is ok.

The other 6.0 version is Win7, which does not need to be installed, but it cannot run on xp system. Other independent graphic calculator software cannot run on xp.

In short, xp can only run GeoGebra Classic 5.0.