If this isn't a homework question, I need to retire from computing altogether...
At LQ, members typically do not give answers/responses to homework questions. This particular question would only require you to install Ubuntu (or any other distribution that includes the GNOME desktop) to get your answer.
I assume you're in a course to teach you Linux. At some point, you will need to install Linux and work the problems/exercises. You will learn much more if you use a Linux install rather than search the Internet for solutions.
You can install Ubuntu within Windows. See this ubuntuforums page
. The install will not affect your Windows installation at all.
Alternatively, you can install Linux in a virtual machine. Search the Web for VirtualBox or VMWare. Again, installing Linux on a virtual machine will not affect your Windows install.