The purpose of this assessment probe is to elicit students’ ideas about magnetic interactions. It is designed to find out whether students recognize that it’s a force between magnetic objects that causes them to “stick.” The probe is best used with middle and high school students and works well as a discussion at the start of a unit on electricity and magnetism. If materials are available, consider demonstrating the probe scenario. 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.