The purpose of this assessment probe is to elicit students’ ideas about magnetic interactions. It is designed to find out whether students confuse electrostatic effects with magnetic effects and is best used for discussion at the start of a unit on magnetism. Before using it’s important to understand that many students do not differentiate between electric and magnetic effects. It is best used with middle and high school students. A materials list, teacher notes, standards, assessment, safety notes, and references are provided. This book selection also includes the Table of Contents, Preface, Acknowledgments, About the Authors, Introduction, and Index.