This book consists of chapters that present the state-of-the-art research and applications of Virtual & Augmented Reality Technology-enhanced Learning (VARTeL). The chapters of the book present a multi-facet view on different approaches to deal with challenges that surround the uptake of educational applications of mixed reality, simulations, and serious games in various practices. The different approaches highlight challenges and potential solutions and provide future directions for mixed reality, simulation, and serious games research, for the design of learning material and for implementation. By doing so, the book is a useful resource for both students and scholars interested in research in this field, for designers of learning material, and for practitioners that want to embrace mixed reality, simulation, and/or serious games in their education.