The two case studies focused on students’ reasoning about data analysis as they started to develop views (and tools to support them) that are consistent with the use of EDA. Sociocultural and cognitive perspectives will now be considered in a detailed analysis of the case studies. The sociocultural perspective focuses on learning (of a complex domain, such as EDA) as the adoption of the viewpoint of a community of experts, in addition to learning skills and procedures. Thus, this study looked at learning as an enculturation process with two central components: students engaged in doing, investigating, discussing and making conclusions; and teachers engaged in providing role models by being representatives of the culture their students are entering through timely interventions. The cognitive perspective focuses on the development and change in students’ conceptions and the evolution of their reasoning. Learning is perceived as a series of interrelated actions by the learner to transform information to knowledge—such as collecting, organizing, and processing information—to link it to previous knowledge and provide interpretations (Davis, Maher, & Noddings, 1990)