It's been a staple of my passages, right after the TBR science passages. It is true, some questions are easy, but the book excels in covering a broad spectrum of perspectives on a particular topic. For example, say you're studying lenses. Most of you will have memorized the basic m=-i/o equation, lensmaker equation, and will know how to solve problems related to those. TPR science workbook asks about all these weird scenarios outside of the primary equations, and is useful for seeing the same issue in a different light.