Can I Present the Same Deck to Different Groups?
When you create a Deck (a slide presentation), the file is stored in your Google Drive. You can open it, edit it, and present it as much as you want.
When you are done presenting a particular deck, just click the "More Actions" menu in the lower right-hand corner of your screen and select End This Session.
Now you can name this Session. A session is a single presentation of a deck that contains the student responses you collected. Like Decks, Sessions are saved automatically - but they're easier to find if you name them.
Later, you can present the same Deck again to another group. Each time you start presenting a Deck, you start a new Session and save the answers separately.