The purpose of this assessment probe is to elicit students’ ideas about electric charge. It is designed to reveal students’ thinking about where charge comes from. The example provided is when sliding down a plastic slide on the playground and a small electric shock is felt when you touch the ground. 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.