This chapter features Physical sciences StEMT lessons. The lesson itself focuses on heat transfer and how materials have characteristics that can increase or decrease the amount of heat flow through them. Using some simple materials students tested the ability of insulators to prevent ice cubes from melting. The engineering design challenge has students constructing a container capable of keeping something frozen for as long as possible. 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.