This chapter shows why the exact placement of activities in instruction is pivotal in learning and compares two different hands-on approaches. Assertions are provided about why “explore-before-explain” teaching is beneficial for learners with abundant science education research. The activity box included is meant to provide a professional development experience and promote job-embedded learning. Teacher background information, safety notes, standards, and assessments are provided. This book selection also includes the Table of Contents, Foreword, Acknowledgments, About the Author, Preface, Introduction, References, and Index.