This assessment probe is to elicit students’ ideas about matter and energy and is designed to uncover students’ ideas about the similarities and differences between the crosscutting concepts of matter and energy. This probe is best used with students in grades 6–12 and may be modified for students in grade 5. The probe is provided in English and Spanish. A materials list, teacher notes, standards, assessment, and references are provided. This book selection also includes the Table of Contents, Preface, Acknowledgments, Dedication, About the Authors, Introduction, and Index.