A Comparison of Students Mathematical Communication Ability taught by Contextual Teaching and Learning versus Problem Based Learning

Khoirunnisa Nasution, Slamet Suyanto

Abstract


Abstract: A Comparison of Students Mathematical Communication Ability taught by Contextual Teaching and Learning versus Problem Based Learning. Objective: This study aims to compare mathematical communication skills taught by Contextual Teaching and Learning (CTL) and Problem Based Learning (PBL) for 7th grade junior high school students. Methods: This quasi-experimental research with two-group pretest and posttest design was carried out on 26 students in the CTL group and 28 students in the PBL group who has chosen by simple random sampling. Ten questions of a math essay test consisting of 5 pretest and 5 posttest questions which accommodated the mathematical communication indicators were applied to the two groups. Data was analyzed using simple descriptive statistical test and t-test. Findings: This study proved that the PBL improved students mathematical communication ability more effective than the CTL model. Conclusion: PBL can be considered to be applied in the classrooms to improve mathematical communication ability.

Keywords: mathematical communication ability, contextual teaching and learning, problem based learning.

Abstrak: Perbandingan Kemampuan Komunikasi Matematis Siswa yang diajar dengan Contextual Teaching and Learning versus Problem Based Learning. Tujuan: Penelitian ini bertujuan untuk membandingkan kemampuan komunikasi matematis siswa dengan menggunakan Contextual Teaching and Learning (CTL) dan Problem Based Learning (PBL) pada siswa SMP kelas 7. Metode: Penelitian kuasi eksperimen dengan desain two-group pretest and posttest design ini dilakukan terhadap 26 siswa kelompok CTL dan 28 siswa kelompok PBL yang dipilih secara simple random sampling. Sepuluh soal tes esai matematika yang terdiri atas 5 soal pretest dan 5 soal posttest yang mengakomodir indikator komunikasi matematis diberikan pada dua kelompok tersebut. Data dianalisis dengan menggunakan uji statistik deskriptif sederhana dan uji-t. Temuan: Penelitian ini menunjukkan bahwa kemampuan komunikasi matematis siswa yang menggunakan model PBL secara signifikan lebih efektif dibandingkan dengan model CTL. Kesimpulan: PBL dapat dipertimbangkan untuk diterapkan di dalam kelas guna meningkatkan kemampuan komunikasi matematis.

Kata kunci: kemampuan komunikasi matematis, pembelajaran kontekstual, pembelajaran berbasis masalah.


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