All three books are original teaching materials from the instructor. They were distributed for the purpose of reviewing the electromagnetism section of Teiryo-kai's Physics for Year 2 students. The example problem review booklet contains the problem statements of all example problems in the electromagnetism section of Year 2 physics, along with the basic knowledge needed to solve the problems, key points, answers, and plus-alpha knowledge, all handwritten by the instructor. The comprehensive review test preparation print contains predicted test questions, along with their answers and handwritten explanations by the instructor. There are some handwritten notes throughout. There are almost no scratches or folds. This is recommended material for those who are learning physics for the first time or who want to organize electromagnetism in their minds. Please note that returns and complaints are not accepted.