Install edubuntu-artwork by entering the following commands in the terminal:
sudo apt update sudo apt install edubuntu-artwork
Description:
edubuntu themes and artwork
Edubuntu themes and artwork provided that includes a GDM theme, Plymouth theme, wallpapers as well as the default Edubuntu firefox homepage.
Homepage: http://www.edubuntu.org
Version: 15.12.1
Section: universe/gnome