This chapter* presents an active-learning-based teaching model for implementation in the MTCS course, which is based on the constructivist approach. This model is used in this Guide in most of the offered activities. The chapter starts with the motivation and the rationale for using active learning in the MTCS course; then, the active-learning-based teaching model is introduced and explained, including a description of the role of the instructor of the MTCS course in the model implementation.