In chapter IV, you'll understand the Principles of Gamification and their application in education, focusing on Game-Based Learning (GBL) in schools. Explore different gamification types, including structural and content-based approaches. Discover how gamification enhances motivation, participation, and feedback in learning. Explore the short and long-term effects of gamification, and transition to GBL, learning about its elements and various game types. Practical uses of GBL, like Virtual Reality and mobile apps in education, will be discussed. Finally, the chapter explains how gamification aligns with curricula in primary and secondary schools, offering innovative teaching possibilities.