The number of one-to-one mobile programs in elementary schools as a resource to substitute the textbook has become popular worldwide. However, findings of studies that seek to enable understanding of how the daily use of these mobile devices affects student's engagement in the classroom are heterogeneous. The authors utilized and adapted a…

Geometry students have few opportunities to apply geometric concepts and solve geometry problems in authentic contexts. We developed a Ubiquitous Geometry (UG) system to teach geometry to elementary students by using it to measure common objects in authentic contexts. The instant study investigates the effects of UG on student geometry estimation…