Wen Huang, Candace Walkington, Mitchell J. Nathan, International Journal of Computer-Supported Collaborative Learning, Jul 03, 2023

This paper (39 page PDF) explores collaboration in virtual environments. "New forms of VR enable multiple learners to manipulate the same mathematical shapes presented as dynamic objects projected in a joint 3D collaborative space, using intuitive hand gestures." Though positioned as a research paper, it's really a conceptual overview, given that the 'subjects' were "groups of in-service teachers" in different physical locations. That said, it's very comprehensive and provides a really good overview of the subject. The paper itself is a broad survey of different instructional approaches, tracking and measurement, and implications for theories such as embodied cognition.

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