This foundational book provides a comprehensive introduction to the principles and theories that underpin effective teaching and instructional design. Themes explored include pedagogical models, learning theories, instructional strategies, and the science of effective teaching. Undergraduate students pursuing education degrees gain a robust understanding of the theoretical foundations of teaching, which serve as the bedrock of their future practice. Practitioners in education enhance their teaching methods by gaining insights into evidence-based instructional approaches. Policymakers appreciate the significance of instructional theory in shaping educational practices, and the general public gains awareness of the intricacies of effective instruction in diverse learning environments.