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| Main Authors: | , , |
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| Format: | Recurso educativo Open Access |
| Language: | en |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://eric.ed.gov/?id=EJ1451994 |
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| _version_ | 1867181731990208512 |
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| author | Karl Lundengård Peter Johnson Phil Ramsden |
| author_facet | Karl Lundengård Peter Johnson Phil Ramsden Karl Lundengård Peter Johnson Phil Ramsden |
| collection | Education Resources Information Center |
| contents | Automated Feedback on Student Attempts to Produce a Set of Dimensionless Power Products from a Set of Physical Quantities That Describe a Physical Problem Karl Lundengård Peter Johnson Phil Ramsden Automation Feedback (Response) Algorithms Science Education Validity Formative feedback is important in learning. Automating the provision of specific, objective, constructive feedback to large cohorts requires complex algorithms that most teachers do not have time to develop, suggesting that a community effort is needed to create a library of specialised algorithms. We present an exemplar algorithm for a class of tasks in 'dimensional analysis' relating to the Buckingham Pi theorem. The challenge arises because there are infinitely many valid and invalid answers, but any valid answer is sufficient to complete a task. We present an algorithm that, given one valid reference answer, can evaluate any response to a task. The algorithm uses a vector-space formulation of the Pi theorem. Deployment across seven tasks for 380 students provided feedback 3,090 times, including stating why a response is invalid. The most common reason was that a student-proposed set was not dimensionless, but other educationally relevant reasons were also identified. |
| format | Recurso educativo Open Access |
| id | eric_EJ1451994 |
| institution | ERIC Institute of Education Sciences |
| language | en |
| publishDate | 2024 |
| record_format | eric |
| spellingShingle | Automated Feedback on Student Attempts to Produce a Set of Dimensionless Power Products from a Set of Physical Quantities That Describe a Physical Problem Karl Lundengård Peter Johnson Phil Ramsden Automation Feedback (Response) Algorithms Science Education Validity Automated Feedback on Student Attempts to Produce a Set of Dimensionless Power Products from a Set of Physical Quantities That Describe a Physical Problem Karl Lundengård Peter Johnson Phil Ramsden Automation Feedback (Response) Algorithms Science Education Validity Formative feedback is important in learning. Automating the provision of specific, objective, constructive feedback to large cohorts requires complex algorithms that most teachers do not have time to develop, suggesting that a community effort is needed to create a library of specialised algorithms. We present an exemplar algorithm for a class of tasks in 'dimensional analysis' relating to the Buckingham Pi theorem. The challenge arises because there are infinitely many valid and invalid answers, but any valid answer is sufficient to complete a task. We present an algorithm that, given one valid reference answer, can evaluate any response to a task. The algorithm uses a vector-space formulation of the Pi theorem. Deployment across seven tasks for 380 students provided feedback 3,090 times, including stating why a response is invalid. The most common reason was that a student-proposed set was not dimensionless, but other educationally relevant reasons were also identified. |
| title | Automated Feedback on Student Attempts to Produce a Set of Dimensionless Power Products from a Set of Physical Quantities That Describe a Physical Problem |
| topic | Automation Feedback (Response) Algorithms Science Education Validity |
| url | https://eric.ed.gov/?id=EJ1451994 |