This lecture delves into the evaluation framework CLAP, which aims to uncover the collective process of collaboration in learning. It discusses the types of evidence collected, such as anecdotal and correlational, and the importance of establishing causal relationships. The lecture explores the dynamics of collaboration, the evaluation of collaborative learning, and the cognitive load theory. It also examines the concept of interactivity gains and coordination costs in collaborative learning, emphasizing the significance of network interactions. The presentation concludes with a detailed analysis of two learning communities, highlighting the evolution phases and effectiveness of collaborative learning.