This book models project-based environments that are intentionally designed around the United States Common Core State Standards (CCSS, 2010) for Mathematics, the Next Generation Science Standards (NGSS Lead States, 2013) for Science, and the National Educational Technology Standards (ISTE, 2008). The primary purpose of this book is to reveal how middle school STEM classrooms can be purposefully designed for 21st Century learners and provide evidence regarding how situated learning experiences will result in more advanced learning. This Project-Based Instruction (PBI) resource illustrates how to design and implement interdisciplinary project-based units based on the REAL (Realistic Explorations in Astronomical Learning ¿ Unit 1) and CREATES (Chemical Reactions