The purpose of this assessment probe is to elicit students’ ideas about electric charge. It is designed to reveal students’ thinking about the types of materials that can be electrically charged so it’s not important that they know which types of materials tend to become positively or negatively charged. 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.