NDLI: Interaction and reflection via 3D path shape qualities in a mediated constructive learning environment

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Interaction and reflection via 3D path shape qualities in a mediated constructive learning environment

Content Provider	ACM Digital Library
Author	Tu, Kai Fulmer, Matthew Thornburg, Harvey Campana, Ellen Spanias, Andreas Birchfield, David
Abstract	The mixed-reality environment, or hybrid physical-digital space, is an emerging human-computer interaction paradigm with great potential to support constructive learning in everyday settings as a complement to traditional classroom methods. Key advantages over screen-based media and immersive (virtual-reality) environments include a) dynamic, multimodal feedback, which engages diverse learning styles through multiple modes of representation; b) affordance of unencumbered, full-body movement, which enables interactions to be physically embodied; and c) physical continuity with the classroom, which fosters informal collaborative and social interactions. For this potential to be realized, however, we must address significant challenges in interaction design. We must develop modes of interaction which are implicitly learnable, which afford full-body movement, and which are cognitively well adapted to large physical spaces. Furthermore, we must create a mechanism by which students can reflect on what they have "constructed" through interacting with the space, so that implicit learning can be leveraged in the interest of explicit understanding. To these ends, we have developed a novel interaction paradigm based around 3D path shape qualities: straight, curved, random, and stop, which describe motion of an illuminated object (glowball) guided by the participant through the space. We infer these qualities in real-time (online) and also offline using a robust Bayesian framework operating on a low-cost, non-intrusive video sensing apparatus. Online inference drives the interaction and offline segmentation the post-interaction display, our mechanism for reflection where segmentation results are mapped onto a physical trace of the participant.s motion. An informal study a) validates the implicit learnability of straight, curved, and stop mappings based on shape quality controls, and b) highlights the comparative advantage of the postinteraction display for all mappings, when subjects are asked to identify the actions responsible for specific target outcomes.
Starting Page	37
Ending Page	46
Page Count	10
File Format	PDF
ISBN	9781595937834
DOI	10.1145/1290144.1290152
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2007-09-28
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Mediated constructive learning Motion quality analysis Hybrid physical-digital space
Content Type	Text
Resource Type	Article

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