After a while when you own various SimplyConversations^TM sets you may need to implement a system with which to organize them.

You can store the sets in a card box and can organize them by either lexical set or by the structures as indicated on each card. 

Click here to download a .pdf of six blank index cards. 

I

I generally keep mine together as complete sets in plastic wallets, with a hard copy of the prompt sheet and I usually use this to write up notes  regarding which ones we completed in class and with whom I've done them with.  (So that I can also keep all other types of related materials together).