This curriculum makes use of the free and open source software Greenfoot to run and edit code. A .zip file containing a Windows version of Greenfoot version 3.0.4 is attached.
If you prefer, you may download the software from the official Greenfoot website, but be sure to download version 3.0.4 (we are not updating our curriculum for the newest version of Greenfoot yet; we are waiting for bugs to be fixed in the newest version). The official website's download page is here: https://www.greenfoot.org/download_old
The copyright for Greenfoot is held by Michael Kölling and Poul Henriksen. The Greenfoot system is available under the GNU General Public License version 2 with the Classpath Exception.
Anyone interested may download the Greenfoot source code here: https://www.greenfoot.org/site/download_source