This book seeks to address the important stages of a teacher's roles in planning, executing, monitoring, evaluating, reflecting, and enhancing pedagogy and making necessary instructional adjustments driven by both qualitative and quantitative data in the teaching cycle. It is hoped that future, beginning, and experienced mathematics educators specifically and educators in general can improve their efficacy and competencies relative to students' conceptual understanding, retention of important facts, active engagement, and changing their mind-sets about their academic abilities. This book provides a wide range of best practices in the K-12 education that are widely used in classrooms across the United States and other countries. These research-based or best practices in pedagogy are briefly explained with the intent to introduce educators to some strategies they can use to improve the delivery of their lessons.