This paper reports the multimodal resources that attached to students' reasoning in the reinvention of specific geometric linear transformations (like reflections according to the axes, projections onto axes and composition of reflections) in a dynamic geometry environment. Following the design heuristics of Realistic Mathematics Education, we…

The theorization of how multimodal learning intersects with online teaching environments has emerged as a key research area in relationship to the creation of opportunities for L2 online interaction. However, there are few studies which have examined how cross-cultural dyads harness and orchestrate semiotic resources across mobile technologies…