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| Presentation | 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 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | 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. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | geometric construction / automatic scoring / digital compass / process-based assessment / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 125, no. 424, PRMU2025-53, pp. 63-67, March 2026. | |
| Paper # | PRMU2025-53 | |
| Date of Issue | 2026-03-17 (PRMU) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | PRMU2025-53 |
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| Conference Information | |
| Committee | PRMU IPSJ-CVIM IBISML ITE-SIP |
| Conference Date | 2026-03-24 - 2026-03-25 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | PRMU |
| Conference Code | 2026-03-PRMU-CVIM-IBISML-SIP |
| Language | English |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Automatic Scoring of Answers using a Digital Compass for Geometric Construction Problems |
| Sub Title (in English) | |
| Keyword(1) | geometric construction |
| Keyword(2) | automatic scoring |
| Keyword(3) | digital compass |
| Keyword(4) | process-based assessment |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Thanh-Nghia Truong |
| 1st Author's Affiliation | Tokyo University of Agriculture and Technology (TUAT) |
| 2nd Author's Name | Hung Tuan Nguyen |
| 2nd Author's Affiliation | Tokyo University of Agriculture and Technology (TUAT) |
| 3rd Author's Name | Nam Tuan Ly |
| 3rd Author's Affiliation | Tokyo University of Agriculture and Technology (TUAT) |
| 4th Author's Name | Yoichi Tsuchida |
| 4th Author's Affiliation | Wacom Co.,Ltd. (WACOM) |
| 5th Author's Name | Hiroshi Miyazawa |
| 5th Author's Affiliation | Wacom Co.,Ltd. (WACOM) |
| 6th Author's Name | Tomo Asakura |
| 6th Author's Affiliation | Wacom Co.,Ltd. (WACOM) |
| 7th Author's Name | Masamitsu Ito |
| 7th Author's Affiliation | Wacom Co.,Ltd. (WACOM) |
| 8th Author's Name | Toshihiko Horie |
| 8th Author's Affiliation | Ratta Global LLC. (Ratta Global) |
| 9th Author's Name | Fumiko Yasuno |
| 9th Author's Affiliation | National Institute for Educational Policy Research (NIEPR) |
| 10th Author's Name | Masaki Nakagawa |
| 10th Author's Affiliation | Tokyo University of Agriculture and Technology (TUAT) |
| Speaker | Author-1 |
| Date Time | 2026-03-24 16:45:00 |
| Presentation Time | 15 minutes |
| Registration for | PRMU |
| Paper # | PRMU2025-53 |
| Volume (vol) | vol.125 |
| Number (no) | no.424 |
| Page | pp.63-67 |
| #Pages | 5 |
| Date of Issue | 2026-03-17 (PRMU) |
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