It really depends on what curriculum you're getting. Sometimes the teacher's edition has all the background "stuff" in it the student needs to answer the questions, sometimes not.
THe ideal thing to do would be to have a look at them, either by asking members of your local group (if you're in one) or if you listed what you're thinking of getting, maybe someone here would know, specifically.
THe ideal thing to do would be to have a look at them, either by asking members of your local group (if you're in one) or if you listed what you're thinking of getting, maybe someone here would know, specifically.