Instruct: Classify the given review as either positive or negative.
Query: Poor

As a student, lessons are not explained. Having a poor teacher doesn't help, but every time I turn to the book an explanation is lacking. After reading the unit, the problems generally seem completely detached. I will work through the examples and come to an understanding of the material, and not be capable of completing a single exercise. Very difficult book to understand if you are not already fluent in mathematics. Coming from an otherwise A student.