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Design and Evaluation of a Multimodal Representation for Conveying the Vast Range of Imperceptible Smallness
Abstract
Teaching and learning the vast range of the sizes that are too small to see (called imperceptible sizes) has been a challenging topic, and a need for a novel form of representation that may provide learners with an alternative way of perceiving and conceptualizing imperceptible sizes emerged. From this, the author introduces a multimodal representation called Temporal-Aural-Visual Representation (TAVR). Unlike commonly used conventional representations (e.g., visual representation), TAVR employs a temporal modality as the main vehicle for conveying imperceptible sizes. In this chapter, the author elaborates on the design process and the details of TAVR. Informed by cognitive psychology research, the mental model and the challenges for learners in understanding imperceptible sizes were identified to form the design requirements of TAVR. Following the design and implementation, the evaluation of TAVR aimed to assess the changes in the participating students’ mental model of the range of imperceptible sizes, which showed TAVR’s positive impact on student learning.
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