Support in-video content searching and result visualization of the flipped classroom
Abstract: This work presents an interactive visualization tool for video content searching for lecture videos in a flipped classroom course Visualization. The search is performed using the video caption with a client-site search engine Lunr. The tool aims to improve accessibility to course video materials and enhance learning engagement, especially when students re-watch the videos. The work focus on using interactive visualization method to help users understand the results and seek video chapters of interest. We evaluate the tool with a survey, usability tests using think-aloud protocols, and semi-structured interviews. The results show that overall students find the tool easy to learn and are willing to use it in Visualization and other future courses. The evaluation transcripts are categorized and interpreted into themes with help of content analysis. This work also presents implications in design and implementation for future projects.
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