Make sure to download these 3 files and install them before next class.

Important !!! : Downloading and installing of all these may take up to 10 minutes, it is impossible to do it one by one at the class together with all 50 students. That's why it is important for you to download them on your own time and try to install them. If you have any trouble with that contact the admin during this week and make sure it is done before next Saturday!