This chapter features Physical sciences StEMT lessons. This lesson is based on the classic misconception about reflections in mirrors with regard to distance. We use this same lesson to demonstrate STEM to our new teachers because it is fun and very effective at demonstrating that students have misconceptions that are difficult to break. It also demonstrates how easy it is to incorporate an engineering design challenge into a lesson. A list of materials, teacher background information, standards, safety notes, assessment, and references are included. This book selection also includes the Table of Contents, Foreword, Preface, Acknowledgments, About The Authors, About Our Approach, Connection to Standards, Conclusion, Appendix A, and Index.