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All Journal PEDAGOGIC: Indonesian Journal of Science Education and Technology
Lubur, Dorethea Novia Ludo
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Education Environmental Science Languange, Linguistic, Communication & Media Mathematics Social Sciences Other

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Analisis Kesalahan Siswa Dalam Menyelesaikan Soal Matematika Pada Materi Operasi Pada Bentuk Aljabar: Indonesian Journal of Science Education and Technology Kodi, Florentina; Lubur, Dorethea Novia Ludo; Making, Samuel Rex Mulyadi; Lede, Yulius Keremata
PEDAGOGIC: Indonesian Journal of Science Education and Technology Vol. 6 No. 4 (2026): PEDAGOGIC: Indonesian Journal of Science Education and Technology (In-Press)
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/ijset.v6i4.7354

Abstract

This study aims to analyze students' errors in solving mathematics problems involving operations on algebraic expressions based on Newman's indicators and to describe changes in these errors following the implementation of the Problem-Based Learning (PBL) model. A descriptive qualitative approach was employed, with students from class VII D at SMP Negeri 1 Lamboya serving as the subjects. Data were collected through tests, interviews, and documentation. The data were analyzed descriptively based on Newman's five indicators—reading, problem comprehension, transformation, process skills, and final answer encoding—and test results were compared with interview findings to substantiate the interpretation. The results indicate that prior to the PBL implementation, students made errors during the problem comprehension, transformation, process skills, and final answer encoding stages, with process skills errors being the most prevalent. Following the PBL implementation, the frequency and level of student errors decreased compared to the pre-test results. Of the 23 students who took the post-test, eight demonstrated improved problem-solving performance, while 15 continued to make errors. These findings suggest that the implementation of Problem-Based Learning can help reduce student errors when solving problems involving operations on algebraic expressions.
Analisis Proses Kognitif Siswa dalam Menyelesaikan Soal Matematika Berdasarkan Taksonomi Bloom pada Materi Persegi dan Persegi Panjang SMP Kristen Weemaringi Lado, Erlis Umbu; Lubur, Dorethea Novia Ludo; Making, Samuel Rex Mulyadi; Lede, Yulius Keremata
PEDAGOGIC: Indonesian Journal of Science Education and Technology Vol. 6 No. 4 (2026): PEDAGOGIC: Indonesian Journal of Science Education and Technology (In-Press)
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/ijset.v6i4.7382

Abstract

This study aims to analyze students' cognitive processes when solving mathematics problems regarding squares and rectangles, based on Bloom's Taxonomy, in the seventh-grade class at Weemaringi Christian Junior High School. A descriptive method was employed, involving the entire seventh-grade cohort of nine students. Data were collected through tests, interviews, and documentation, and subsequently analyzed using the stages of data reduction, data presentation, and conclusion drawing. The results indicate that the students' cognitive processes remain dominated by low- to mid-level thinking skills. Test results show that six students (67%) fell into the medium category and three students (33%) into the low category, with no students reaching the high category. At the C1 cognitive level, students were able to recall previously learned concepts, formulas, and information. However, at levels C2, C3, and C4, some students still struggled to understand concepts, apply formulas, and analyze problems. At levels C5 and C6, students were not yet able to evaluate solution steps or independently create problems and their solutions. The study concludes that the students' cognitive processes have not yet optimally achieved high-level thinking skills. Teachers are advised to provide practice problems that focus on the skills of analyzing, evaluating, and creating
Analisis Kemampuan Pemecahan Masalah Pada Materi Bangun Datar Melalui Model Pembelajaran NHT pada Siswa Kelas VII di SMPK ST. Paulus Karuni Kalumbang, Ghyacinta Matilda; Making, Samuel Rex Mulyadi; Lede, Yulius Keremata; Lubur, Dorethea Novia Ludo
PEDAGOGIC: Indonesian Journal of Science Education and Technology Vol. 6 No. 5 (2026): PEDAGOGIC: Indonesian Journal of Science Education and Technology (In-Press)
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/ijset.v6i5.7587

Abstract

This study aims to describe the problem-solving abilities of Grade VII C students at SMPK St. Paulus Karuni regarding the topic of 2D shapes through the implementation of the Numbered Heads Together (NHT) learning model, based on Polya’s four problem-solving stages: understanding the problem, devising a plan, carrying out the plan, and looking back. The study employed a descriptive qualitative approach with Grade VII C students at SMPK St. Paulus Karuni as the subjects. Data were collected through problem-solving ability tests, interviews, and documentation, and subsequently analyzed through the stages of data reduction, data presentation, and conclusion drawing. The results indicate that the students' problem-solving abilities can be described through Polya’s four stages. Students were able to identify given and required information and determine appropriate strategies to solve the problems. During the stage of carrying out the plan, some students still made errors in the calculation process. The ability to review the solution results also varied, as not all students verified the answers they obtained. The implementation of NHT provided students with opportunities to discuss, exchange strategies, express opinions, and take responsibility for group outcomes during the problem-solving process.  
Co-Authors Kalumbang, Ghyacinta Matilda Keremata Lede, Yulius Kodi, Florentina Lado, Erlis Umbu Samuel Rex Mulyadi Making