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All Journal Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika PTK: Jurnal Tindakan Kelas
Kristinawati Kristinawati
SMP Negeri 2 Salatiga
Decision Sciences, Operations Research & Management Education Mathematics

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UPAYA MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH SISWA KELAS VII B SMP NEGERI 2 SALATIGA PADA MATERI PENYAJIAN DATA MELALUI MODEL PROBLEM BASED LEARNING (PBL) Fitria Nurul Azizah; Mahmudi Mahmudi; Kristinawati Kristinawati; Helti Lygia Mampouw
Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Vol. 4 No. 2 (2023): Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistik
Publisher : LPPM Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46306/lb.v4i2.396

Abstract

This study aims to enhance students' problem-solving skills and learning outcomes on data presentation and interpretation in the form of pie charts and measures of the center of the data in the single data. This research is a collaborative classroom action research (PTKK). The study employs the Problem-Based Learning (PBL) model, conducted at SMP Negeri 2 Salatiga in class VII B with 32 students. The results indicate an improvement in students' problem-solving abilities for each indicator. In cycle I, the student's ability to understand the problem was 36.2 %, which increased by 42.2 % to 78.4 % in cycle II. Furthermore, students' making a plan skill in cycle I was 51.2 %, increasing by 26.9 % to 78.1 % in cycle II. The student's ability to execute the plan increased by 19.6 % from 55.7 % in cycle I to 75.3 % in cycle II. The student's ability to look back and reflect in cycle I was 42.2 %, and in cycle II, it was 75 %, an increase of 32.8 %. The study also showed an improvement in learning outcomes. In cycle I, the classical student mastery level was 40.6 %, with an average learning outcome of 67.2. In contrast, in cycle II, the classical student mastery level was 75 %, with an average learning outcome of 78.2. In this case, the classical student mastery level increased by 34.4 %, with an average student learning outcome increase of 11. Based on these results, the Problem-Based Learning (PBL) model can enhance students' problem-solving abilities
Peningkatan Kemampuan Representasi Matematis melalui Model Problem Based Learning Meilina Cahya Prima Sari; Mahmudi Mahmudi; Kristinawati Kristinawati; Helti Lygia Mampouw
PTK: Jurnal Tindakan Kelas Vol. 4 No. 1 (2023): November 2023
Publisher : Cipta Media Harmoni

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53624/ptk.v4i1.242

Abstract

Rendahnya kemampuan representasi matematis siswa perlu diatasi dengan menerapkan pembelajaran yang tepat karena berkaitan dengan kemampuan siswa mengungkapkan pemahaman konsep matematika dengan berbagai cara. Melalui penelitian tindakan kelas kolaboratif ini, peneliti melakukan tindakan konkrit untuk meningkatkan kemampuan representasi dan hasil belajar siswa kelas VII Sekolah Menengah Pertama melalui model Problem Based Learning (PBL). Subjek penelitian sebanyak 31 siswa kelas VII. Data dikumpulkan melalui wawancara, catatan lapangan, lembar observasi, dan tes, dengan analisis data statistik deskriptif. Hasil penelitian menunjukkan model PBL dapat meningkatkan kemampuan representasi matematis, dimana kemampuan representasi visual meningkat dari 67% pada siklus I menjadi 81% pada siklus II, kemampuan representasi verbal meningkat dari 65% menjadi 83%, dan kemampuan representasi simbolik meningkat dari 59% menjadi 79%. Hasil belajar siswa mengalami peningkatan rata-rata pada siklus I yaitu 63 meningkat menjadi 81 pada siklus II, dengan tingkat ketuntasan 81%. Jadi, kesimpulannya adalah model PBL dapat meningkatkan kemampuan representasi matematis dan hasil belajar siswa.
Co-Authors Fitria Nurul Azizah Helti Lygia Mampouw Mahmudi Mahmudi Meilina Cahya Prima Sari