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Complete List of Conference Papers of the chair of Prof. Dr. Christoph Meinel

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Visualizing Content Exploration Traces of MOOC Students

Rohloff, Tobias; Bothe, Max; Meinel, Christoph in Companion Proceedings of the 9th International Conference on Learning Analytics & Knowledge (LAK19) Seite 754--758 . 2019 .

This workshop paper introduces a novel approach to visualize content exploration traces of students who navigate through the learning material of Massive Open Online Courses (MOOCs). This can help teachers to identify trends and anomalies in their provided learning material in order to improve the learning experience. The difficulty lies in the complexity of data: MOOCs are structured into multiple sections consisting of different learning items and students can navigate freely between them. Therefore, it is challenging to find a meaningful and comprehensible visualization that provides a complete overview for teachers. We utilized a Sankey diagram which shows the students' transitions between course sections by grouping them into different buckets, based on the percentage of visited items in the corresponding section. Three preceding data processing steps are explained as well as the data visualization with an example course. This is followed by pedagogical considerations how MOOC teachers can utilize and interpret the visualization, to gain meaningful insights and execute informed actions. At last, an evaluation concept is outlined.
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