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All Journal AKSIOMA: Jurnal Program Studi Pendidikan Matematika Jurnal Elemen
Cecil Hiltrimartin
Sriwijaya University
Education Mathematics Other

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Students’ errors in solving climate change context mathematical modeling problems Mursyidah J Parandrengi; Cecil Hiltrimartin
Jurnal Elemen Vol 9 No 2 (2023): July
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/jel.v9i2.11422

Abstract

This research is a descriptive study that aims to describe the errors of students of the Faculty of Education and Teacher Training (FKIP), Sriwijaya University, in solving Climate Change context mathematical modeling problems, to minimize errors made in solving mathematical modeling problems, especially in the context of climate change in the future. No one has researched student errors in solving mathematical modeling problems in the Climate Change context using the Newman error procedure. Data collection techniques used in this study included tests and semi-structured interviews. The data analysis technique used for test data is by analyzing errors using the Newman procedure. The results of this study with 52 participants were types of errors by FKIP Sriwijaya University in solving Climate Change context mathematical modeling problems as follows for question 1 and question 2, and respectively there were 23.1% and 15.4% errors in understanding the problem, 46.2% and 96.2% transformation errors, 32.7% and 96.2% writing. The causes of errors are errors in reading, errors in determining the problem and existing information, errors in making assumptions, errors in identifying variables, and errors in making mathematical models.
PENGEMBANGAN LKPD FUNGSI KUADRAT BERBASIS PEMBUKTIAN DENGAN MODEL ARGUMENTASI TOULMIN UNTUK MEMFASILITASI KEMAMPUAN ARGUMEN MATEMATIS Debi Suci Putri; Cecil Hiltrimartin; Yusuf Hartono; Nyimas Aisyah
AKSIOMA: Jurnal Program Studi Pendidikan Matematika Vol 13, No 4 (2024)
Publisher : UNIVERSITAS MUHAMMADIYAH METRO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/ajpm.v13i4.9181

Abstract

Riset berikut tujuannya guna memperoleh LKPD berbasis pembuktian fungsi kuadrat di SMA yang valid dan praktis serta mempunyai efek potensial pada kemampuan argumentasi matematis pelajar. Riset diperlukan lantaran kemampuan argumentasi matematis pelajar yang termasuk rendah dan belum adanya bahan ajar yang dapat mendukung kemampuan argumentasi matematis pelajar. Jenis riset yang dipakai ialah studi pengembangan bermodel Tessmer yang tersusun atas evaluasi pendahuluan dan formatif. Subjek dalam riset yakni pelajar kelas X SMA Muhammadiyah 1 Palembang semester ganjil tahun ajaran 2023/2024. Teknik pengumpulan data yang dipakai pada riset berikut yakni kuesioner, wawancara, dan tes. Validitas LKPD berbasis bukti dicermati melalui 3 faktor yakni konstruk, isi, serta bahasa yang terdapat pada lembar validasi dalam tahapan expert review dan sesuai masukan/komentar dari hasil percobaan one to one. Kepraktisan LKPD berbasis bukti yang terlihat dari hasil hitung kuesioner yang diberi dalam tahapan kelompok kecil. Hasil riset memaparkan bahwasanya pengembangan LKPD mempunyai persentase kevalidan 87,17% dengan kriteria sangat valid dan persentase kepraktisannya 84,5% dengan kriteria sangat praktis. Sehingga dapat disimpulkan bahwa LKPD yang dikembangkan valid dan praktis serta mempunyai efek potensial pada kemampuan argumentasi matematis pelajar yang terlihat dari hasil analisis data tes dengan rata-rata argumentasi pelajar berada pada level 4 (argumentasi siswa disusun dengan baik). The following research aims to obtain proof-based student worksheet on quadratic functions in high school that is valid and practical and has a potential effect on students' mathematical argumentation abilities. The following research is needed because students' mathematical argumentation abilities are low and there are no teaching materials that can support students' mathematical argumentation abilities. The type of research used is a development studies with Tessmer model which is composed of preliminary and formative evaluations. The subjects used in the following research are class X students of Muhammadiyah 1 Palembang Senior High School odd semester of the 2023/2024 academic year. The data collection techniques used in the following research are questionnaires, interviews and tests. The validity of proof-based student worksheet is examined through 3 factors, namely construct, content and language contained in the validation sheet in the expert review stage and according to suggestions/comments from the results of one to one experiments. The practicality of proof-based student worksheet that can be seen from the results of calculating questionnaires given in the small group stage. The research results show that the development of student worksheet has a validity percentage of 87.17% with very valid criteria and a practical percentage of 84.5% with very practical criteria. So it can be concluded that the developed LKPD is valid and practical and has a potential effect on students' mathematical argumentation skills as seen from the results of test data analysis with the average student argumentation at level 4 (student argumentation is well organized).  
Co-Authors Debi Suci Putri Mursyidah J Parandrengi Nyimas Aisyah Yusuf Hartono