The purpose of this assessment probe is to elicit students’ ideas about soil. Soil is the material that is useful to plants and animals, including people. Its formation is a slow process but continuous and still happening today. This probe is designed to uncover common misconceptions about characteristics of soil and its formation. This probe is best used with grades 3–8, and can be used with the card sort formative assessment classroom technique. A materials list, teacher background information, references, assessment, and outcomes are provided. This book selection includes the Table of Contents, Foreword, Preface, Acknowledgments, About the Authors, Introduction, and Index.