My android device is the Samsung Galaxy Note 2
Yes it's a computer, how do I do it?
This is for a school presentation so I cant download anything on the computer
Can I download something to Google Chrome to do it instead?
Which other device are you talking about? If it's a computer you sure can. You can use something like unified remote
EDIT:
Well in order to control another computer or device remotely like so the computer would need to have the software installed first so if that's not a possibility then no you can't do it then.
unified remote for example require the server software on the computer, then you can control the PC using the phone/tablet. I use this all the time