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Current times are accelerating new technologies to provide high-quality education for remote collaboration, as well as hands-on learning. This is particularly important in the case of laboratory-based classes, which play an essential role in STEM education. In this paper, we introduce ColabAR, a toolkit that uses physical proxies to manipulate virtual objects in Tangible Augmented Reality (TAR) laboratories. ColabAR introduces haptic-based customizable interaction techniques to promote remote collaboration between students. Our toolkit provides hardware and software that enable haptic feedback to improve user experience and promote collaboration during learning. Also, we present the architecture of our cloud platform for haptic interaction that supports information sharing between students in a TAR laboratory. We performed two user studies (N=40) to test the effect of our toolkit in enriching local and remote collaborative experiences. Finally, we demonstrated that our TAR laboratory enables students' performance (i.e., lab completion rate, lab scores) to be similar to their performance in an in-person laboratory.
Villanueva et al. (Wed,) studied this question.