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In schools and colleges around the world, open-ended home-work assignments are commonly used. However, such assignments require substantial instructor effort for grading, and tend not to support opportunities for repeated practice. We propose UpGrade, a novel learnersourcing approach that generates scalable learning opportunities using prior student solutions to open-ended problems. UpGrade creates interactive questions that offer automated and real-time feedback, while enabling repeated practice. In a two-week experiment in a college-level HCI course, students answering UpGrade-created questions instead of traditional open-ended assignments achieved indistinguishable learning outcomes in ~30% less time. Further, no manual grading effort is required. To enhance quality control, UpGrade incorporates a psychometric approach using crowd workers' answers to automatically prune out low quality questions, resulting in a question bank that exceeds reliability standards for classroom use.
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Clustering learners’ feedback processing patterns based on their response latency
In intelligent tutoring systems (ITS) abundant supportive messages are provided to learners. One implicit assumption behind this design is that learners would actively process and benefit from feedback messages when interacting with ITS individually. However, this is not true for all learners; some gain little after numerous practice opportunities. In the current research, we assume that if the learner invests enough cognitive effort to review feedback messages provided by the system, the learner’s performance should be improved as practice opportunities accumulate. We expect that the learner’s cognitive effort investment could be reflected to some extent by the response latency, then the learner’s improvement should also be correlated with the response latency. Therefore, based on this core hypothesis, we conduct a cluster analysis by exploring features relevant to learners’ response latency. We expect to find several features that could be used as indicators of the feedback usage of learners; consequently, these features may be used to predict learners’ learning gain in future research. Our results suggest that learners’ prior knowledge level plays a role when interacting with ITS and different patterns of response latency. Learners with higher prior knowledge levels tend to interact flexibly with the system and use feedback messages more effectively. The quality of their previous attempts influences their response latency. However, learners with lower prior knowledge perform two opposite patterns, some tend to respond more quickly, and some tend to respond more slowly. One common characteristic of these learners is their incorrect response latency is not influenced by the quality of their previous performance. One interesting result is that those quick responders forget faster. Thus, we concluded that for learners with lower prior knowledge, it is better for them not to react hastily to obtain a more durable memory.
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- Award ID(s):
- 1934745
- PAR ID:
- 10353236
- Date Published:
- Journal Name:
- Proceedings of The Third Workshop of the Learner Data Institute , The 15th International Conference on Educational Data Mining (EDM 2022)
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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