Elementary students' difficulties with angles in geometry are well documented, but we know little about how they conceptualize angles while solving problems and how their thinking changes over time. In this study, we examined 26 third and fourth grade students completing a body-based angle task supported by the Kinect for Windows. We used…

This article examines the complexity of the affordances that mobile technologies offer in the K-12 educational context. It builds on an ecological perspective (Mercer, 2012; van Lier, 2008) informed by theories of dynamic systems and complexity (Larsen-Freeman & Cameron, 2008) to explore the concept of affordance as a complex and dynamic…

We used a grounded theory approach to investigate and describe the learning of middle school students when they carry out mathematical activities (in the classroom or out of it) and explore mathematical objects and relations using mobile phones. We found that a web of conditions and consequences could be related to the students' learning when they…