Book excerpt: Teacher as Researcher: Becoming Familiar with Educational Research to Connect Theory to Practice is written for teachers involved in research on improving classroom instruction and helping students in their learning process. This is a complete guide for in-service teachers doing research in their classroom or for pre-service teachers as a guest teacher in a classroom. The purpose of this book is to offer a set of research tools for teachers to follow through the inquiry process and provide effective solutions to significant problems in their classroom. The book’s structure will help teachers to target the problem in their own classroom, inquire about different strategies that may provide solutions, and then finally examine the effective solution to the problem. The clarity and brevity of this book will help teachers conduct an action research study in a classroom or learn to do a case study with their student(s) in order to help students in their learning process. Designed for busy teachers, this book is simple to follow throughout the research process.