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All Journal Jurnal Riset Pendidikan dan Inovasi Pembelajaran Matematika (JRPIPM) Jurnal Pengembangan Pembelajaran Matematika
Alfi Syahrin Siregar
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Education Mathematics Social Sciences

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Development of a Learning Management System (LMS) Based on Canvas Instructure to Support Students’ Critical Thinking Skills Aulia Rahma Dewi; Alfi Syahrin Siregar; Rofiki, Imam
Jurnal Riset Pendidikan dan Inovasi Pembelajaran Matematika Vol. 8 No. 2 (2025): JRPIPM APRIL 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrpipm.v8n2.p109-127

Abstract

A learning management system (LMS) is a solution for managing learning in the 21st-century education era. Canvas Instructure is an LMS that supports students’ critical thinking skills. This study aims to develop a canvas-based LMS structure on Linear Program material to support the critical thinking skills of grade 11 students. The research method was research and development using the ADDIE development model. The LMS was tested on 22 11th-grade high school students with Linear Program material. The results showed that LMS validation was 89.375% from LMS validation experts and 92.222% from material experts. The average of teachers’ and students’ response questionnaires were 94.36% and 89.37%, respectively. Student evaluation test results obtained a percentage of student completeness of 90.91% with an average of 85.82. Therefore, this LMS is considered valid, effective, and practical for use in supporting the critical thinking skills of grade 11 students in the Linear Program.
Exploring justification in solving mathematics problems in a facebook group Imam Rofiki; Alfi Syahrin Siregar
Jurnal Pengembangan Pembelajaran Matematika (JPPM) Vol. 7 No. 2 (2025): Jurnal Pengembangan Pembelajaran Matematika: Volume 7 Nomor 2 August 2025
Publisher : Pusat Studi Pengembangan Pembelajaran Matematika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/jppm.2025.72.85-104

Abstract

Facebook is a popular platform that supports the development of critical thinking skills through its discussion feature. One of these potentials is its use to encourage mathematical discussions and explore justification skills in solving problems. Mathematical justification skills include providing logical reasons for the steps in solving problems. This study aims to explore the mathematical justification of Facebook users in answering questions uploaded in Facebook groups. The justification levels refer to Back, Mannila, and Wallin: assumption, vague/broad statement, rule, procedural description, and own explanation. This study used a qualitative approach with an explorative research design. The study participants were 222 members of the SMP (Solution of Mathematics Problem) Facebook forum. Data were obtained through documentation of uploaded questions, comments from forum members, and non-participatory online observation. This study analyzed answers to three geometry problems uploaded in the forum, with six people selected as research subjects based on the diversity of their justification patterns. The results showed variations in the level of mathematical justification of forum members, from assumption to own explanation. Factors influencing differences in justification levels include understanding mathematical concepts and critical thinking skills. These findings indicate that Facebook can effectively encourage mathematical discussions and improve critical thinking skills.
Co-Authors Aulia Rahma Dewi Imam Rofiki