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Manurung, Julian Lois
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Education Mathematics

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Analisis Kemampuan Berpikir Kritis Matematis Siswa SMP dalam Menyelesaikan Soal pada Materi SPLDV Manurung, Julian Lois; Hutapea, Nahor Murani; Suanto, Elfis
Jurnal Gantang Vol 9 No 1 (2024): Jurnal Gantang
Publisher : Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/jg.v9i1.6925

Abstract

Critical thinking skills are important for students in the process of learning mathematics. Critical thinking skills in the mathematics learning process can help students better understand the material. This study aims to describe students' critical thinking skills in solving problems on the Two-Variable Linear Equation System material. This type of research is descriptive qualitative. The subjects of the study were 18 students of class VIII MTS Daarun Nahdhah Bangkinang. The data collection instruments used in this study were mathematical critical thinking ability test questions and interview sheets. The test to measure students' critical thinking skills consisted of 4 descriptive questions on the Two-Variable Linear Equation System material. The test results were analyzed according to the indicators of critical thinking skills used in this study: Interpretation, Analysis, Evaluation, and Inference. The results of this study stated that the average value of mathematical critical thinking skills of class VIII students of MTS Daarun Nahdhah Bangkinang was 41.99% in the reasonably critical category. The interpreting indicator is in the low category with an average of 25.78%, the analyzing indicator is in the sufficient category with an average of 54.68%, the evaluating indicator is in the sufficient category with an average of 49.21%, and the inferring indicator is in the low category with an average of 38.28%. Based on the research results above, teachers must get used to giving students non-routine questions in learning, using contextual LKPD, and providing varied learning resources to improve students' critical thinking skills.
Pengembangan E-LKPD Berbasis Etnomatematika Alat Tangkap Ikan Berupa Bubu pada Materi Bangun Ruang Kelas VIII SMP Manurung, Julian Lois; Febrian, Febrian; Astuti, Puji
Jurnal Gantang Vol 9 No 2 (2024): Jurnal Gantang
Publisher : Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/jg.v9i2.7557

Abstract

This study aims to produce an e-worksheet product based on ethnomathematics of fish trap in the form of Bubu on valid and practical space geometry material. This type of research is Research and Development (R&D) using the ADDIE development model. According to the needs of the researchers in this study, they only carried out three stages: analysis, design, and development. The data collection instruments were expert validation sheets and teacher and student response questionnaires. The data obtained were qualitative and then converted into quantitative data on an interval scale using MSR. The results of the material expert validation obtained an assessment of 80.36% with very valid criteria, the media expert validation obtained an assessment of 82.51% with very valid criteria, and the language expert validation obtained an assessment of 82.27% with very valid criteria. The results of the practicality test by the teacher obtained an assessment of 81.09% with very practical criteria, and the practicality test by students obtained an assessment of 84.33% with very practical criteria. The ethnomathematics-based e-worksheet that was developed has achieved valid and practical criteria. Therefore, the product created is worthy of being tested for its effectiveness.
Analysis of mathematical critical thinking ability of junior high school students in solving problems on two-variable linear equation system Manurung, Julian Lois; Hutapea, Nahor Murani; Suanto, Elfis
Jurnal Gantang Vol 9 No 1 (2024): Jurnal Gantang
Publisher : Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/jg.v9i1.6899

Abstract

Critical thinking skills are important for students in the process of learning mathematics. Critical thinking skills in the mathematics learning process can help students better understand the material. This study aims to describe students' critical thinking skills in solving problems on the Two-Variable Linear Equation System material. This type of research is descriptive qualitative. The subjects of the study were 18 students of class VIII MTS Daarun Nahdhah Bangkinang. The data collection instruments used in this study were mathematical critical thinking ability test questions and interview sheets. The test to measure students' critical thinking skills consisted of 4 descriptive questions on the Two-Variable Linear Equation System material. The test results were analyzed according to the indicators of critical thinking skills used in this study: Interpretation, Analysis, Evaluation, and Inference. The results of this study stated that the average value of mathematical critical thinking skills of class VIII students of MTS Daarun Nahdhah Bangkinang was 41.99% in the reasonably critical category. The interpreting indicator is in the low category with an average of 25.78%, the analyzing indicator is in the sufficient category with an average of 54.68%, the evaluating indicator is in the sufficient category with an average of 49.21%, and the inferring indicator is in the low category with an average of 38.28%. Based on the research results above, teachers must get used to giving students non-routine questions in learning, using contextual LKPD, and providing varied learning resources to improve students' critical thinking skills.
Co-Authors Elfis Suanto Nahor Murani Hutapea Nurwijayanti Puji Astuti