Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Boo!

This work tries to teach intermediate algebra and some trig, but its approach is poor. I especially loved how the examples were extremely easy to solve, but the problems were impossible. I used this book for AlgII/Trig and Limits(Precalculus). Unfortunately, it required much use of my TI-89 to get my usual A+.