Vol.14, No.4, November 2025.                                                                                                                                                                          ISSN: 2217-8309

                                                                                                                                                                                                                        eISSN: 2217-8333

 

TEM Journal

 

TECHNOLOGY, EDUCATION, MANAGEMENT, INFORMATICS

Association for Information Communication Technology Education and Science

 

Electronic Module of Geometry Based on Open Problems

 

I Ketut Suastika, Sri Hariyani, Nurita Primasatya

 

© 2025 I Ketut Suastika, published by UIKTEN. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. (CC BY-NC-ND 4.0)

 

Citation Information: TEM Journal. Volume 14, Issue 4, Pages 3176-3184, ISSN 2217-8309, DOI: 10.18421/TEM144-26, November 2025.

 

Received: 17 January 2025.
Revised: 18 June 2025.
Accepted: 17 July 2025.
Published: 27 November 2025.

 

Abstract:

 

The aim of this study is to develop teaching material products in the form of open problem-based e-modules in geometry learning courses. Plomp’s development stages are used in this study, namely preliminary research, prototype stage, and assessment stage. This paper focuses on the assessment stage, the e-module field test. The field test is conducted at the Elementary School Teacher Education Study Program of PGRI Kanjuruhan University Malang, Nusantara PGRI University Kediri, and STKIP PGRI Trenggalek involving 277 students as subjects. In the field test, the practicality and effectiveness of the E-Module were measured using the Lecturer and Student Response Questionnaire and the Creative Thinking Ability Test. Based on the analysis results, lecturers and students responded positively to the designed e-module. More than 75% of the students' creative thinking ability level was at least in the “High” category. The form of open problems presented in this e-module makes students able to provide more than one solution and were also able to provide alternative solutions to open problems. However, in general, students are still unable to come up with new and unique solutions. The results of this study show that e-module meet the criteria of practicality and effectiveness.

 

Keywords – Development, E-modules, geometry, open problems, creative thinking ability.

 

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