Foundations of Educational Technology offers a fresh, interdisciplinary, problem-centered approach to educational technology, learning design, and instructional systems development. As the implementation of online, blended, hybrid, mobile, open, and adaptive learning systems rapidly expands, emerging tools such as learning analytics, artificial intelligence, mixed realities, serious games, and micro-credentialing are promising more complex and personalized learning experiences. This book provides faculty and graduate students with a conceptual, empirical, and practical basis for the effective use of these systems across contexts, integrating essential theories from the fields of human performance, learning and development, information and communications, and instructional design. Key additions to this revised and expanded third edition include coverage of the latest learning technologies, research from educational neuroscience, discussions about security and privacy, new attention to diversity, equity, and inclusion, updated activities, support materials, references, and more.