Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A good supplement to my college precalculus class

These cards are in no way a substitute for your book and they will not teach you much unless you have a textbook to go with this. If you are taking a precalculus class (Algebra & Trigonometry), these cards make an excellent referrence. I especially like to use them when I get so sick of looking at the book, I can just flip through the cards and test my own knowledge of precalculus.I'm the type of student that would like every possible advantage since I do not have so much time for study, and math is one of those topics that require work. My only complaint is the quality of the cards. They are less than business card quality. If they would laminate them in some sort of coating, I'd give the cards 5 stars.Also check out the Chemistry study cards. They are identical to these with the exception of subject matter.