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- Title
Analysis of STACK Answer Data Using Pen-Stroke Data from a Calculation Notebook and Item Response Theory.
- Authors
Yasuyuki Nakamura; Kazusa Fujimoto; Kako Ito
- Abstract
One of the most significant features of STACK, an automatic assessment system for mathematics, is that it can automatically classify correct, semi-correct, and incorrect answers using a Potential Response Tree and provide appropriate feedback for each. However, answers provided by students are only the results of their calculations, and if they are semi-correct or wrong, it is necessary to check the notes describing the calculations to determine where mistakes have been made. We developed a function that allows students to submit their notes at the same time as their STACK answers, thereby creating an environment that allows teachers to check where students have made mistakes and where they have stumbled. The note submission can be in the form of saving the results of calculations made with a digital pen on a tablet. This study examines a method of analysing answer data by visualising and analysing pen-stroke data from notes submitted using the latter method and linking this to correct/incorrect data. From pen-stroke data, two types of visualisation were achieved on the submitted notes. One was to colour-code the strokes according to the writing speed of the digital pen, and the other was to display the strokes as thicker if the stagnant time during which nothing was written was above a threshold value. The difficulty of the problem was surmised from those data. Then, item response theory was used to verify whether the difficulty was correctly estimated.
- Subjects
ITEM response theory; QUESTION answering systems; NOTEBOOKS
- Publication
International Journal of Emerging Technologies in Learning, 2023, Vol 18, Issue 1, p279
- ISSN
1863-0383
- Publication type
Article
- DOI
10.3991/ijet.v18i01.36531