| 講演抄録/キーワード |
| 講演名 |
2026-03-24 16:45
Automatic Scoring of Answers using a Digital Compass for Geometric Construction Problems ○Thanh-Nghia Truong・Hung Tuan Nguyen・Nam Tuan Ly(TUAT)・Yoichi Tsuchida・Hiroshi Miyazawa・Tomo Asakura・Masamitsu Ito(WACOM)・Toshihiko Horie(Ratta Global)・Fumiko Yasuno(NIEPR)・Masaki Nakagawa(TUAT) PRMU2025-53 |
| 抄録 |
(和) |
(まだ登録されていません) |
| (英) |
Geometric construction is a fundamental component of mathematics in schools, which tests students’ understanding of geometric properties, and logical thinking ability to organize problem-solving processes. Assessment of geometric construction requires students to follow correct procedural steps; however, the construction process itself is not directly observable in traditional paper-based examinations, making it difficult to assess whether the correct steps have been applied. In contrast, electronic pen-and-paper systems have the capacity to record comprehensive stroke histories, thereby overcoming this limitation and facilitating integration of automated grading. We designed an electronic compass that replaces the pencil and needle of a real compass with a digital stylus pen and needle, allowing students to solve geometric problems in the same way they would with a real compass on paper, as opposed to using a mouse to navigate dynamic geometry software. This study focuses on an automatic method for scoring answers produced with this compass in geometric construction problems, given the challenges arising from fragmented compass strokes, mixed drawing order of compass, pencil, and eraser strokes, and variations in individual construction strategies. The proposed method leverages the temporal order of strokes to segment and group fragmented inputs, reconstructing individual arcs to extract key geometric features, including centers, radii, and intersection points. By analyzing the temporal relationships between these features and subsequent drawing actions, the method evaluates whether the prescribed procedures are correctly followed. |
| キーワード |
(和) |
/ / / / / / / |
| (英) |
geometric construction / automatic scoring / digital compass / process-based assessment / / / / |
| 文献情報 |
信学技報, vol. 125, no. 424, PRMU2025-53, pp. 63-67, 2026年3月. |
| 資料番号 |
PRMU2025-53 |
| 発行日 |
2026-03-17 (PRMU) |
| ISSN |
Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
| PDFダウンロード |
PRMU2025-53 |
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