In this paper, you will discuss how effective our textbook is in presenting a specific topic. It’s not a traditional research paper, but research is involved. If there are multiple textbooks, the syllabus should indicate which textbook will be used.
The purpose of the research is to help you make the determination whether the author was effective or ineffective. You will become an expert on this topic, and then using that expertise you will evaluate how well the author presented that topic. Your thesis statement will claim whether the author was effective or ineffective in presenting your chosen topic. 
To start, find a topic in our textbook that interests you. The topic you choose must conform to the scope of the class. Also, the topic you choose should be very specific, something that the author covers in one page or so. Keep in mind that your topic may be covered in various areas of the book.