Elementary

We examined children’s development of strategic and conceptual knowledge for linear measurement. We conducted teaching experiments with eight students in grades 2 and 3, based on our hypothetical learning trajectory for length to check its coherence and to strengthen the domain-specific model for learning and teaching.We checked the hierarchical structure of the trajectory by generating formative instructional task loops with each student and examining the consistency between our predictions and students’ ways of reasoning.

With the advent of the digital age, research on the psychological impact of youth engagement with technology has surged. New technologies have often taken the blame for promoting negative (and potentially dangerous) youth experiences, such as cyber-bullying, sexual predation, privacy invasion, addiction to videogames, and exposure to violence. For many children and adolescents, however, digital media and technology provide positive ways to express identity, communicate with peers, and engage in civic activities across communities.

With the advent of the digital age, research on the psychological impact of youth engagement with technology has surged. New technologies have often taken the blame for promoting negative (and potentially dangerous) youth experiences, such as cyber-bullying, sexual predation, privacy invasion, addiction to videogames, and exposure to violence. For many children and adolescents, however, digital media and technology provide positive ways to express identity, communicate with peers, and engage in civic activities across communities.