The Effectiveness of Problem Solving-Based Student Worksheet to Improve Students’ Critical Thinking Skills.

Ratu Betta Rudibyani


Abstract: The Effectiveness of Problem Solving-Based Student Worksheet to Improve Students’ Critical Thinking Skills. Objectives: This research aimed to find out the effectiveness of student worksheets based on problem solving in science learning to improve students’ critical thinking skills. Methods: The research population were all tenth-grade science students in one of the Senior High Schools in South Lampung in the even semester of 2017/2018 academic year with the sample was selected using cluster random sampling. This research used d a quasi-experimental method with Pretest-Posttest Control Group Design.The effect of the worksheet was measured based on the mean value of n-Gain of the students’ critical thinking skills. The effect size effect size calculation was also applied. Findings: The result showed that the n-Gain value mean of the students’ critical thinking skills in the experimental was 0.71 and the effect size was 0.89. Conclusion: students’ worksheet based on problem solving in science learning is very effective to improve students’ critical thinking skills

Keywords: students’ worksheet, problem solving, critical thinking skill.

Abstrak: Efektifitas Lembar Kerja Siswa Berbasis Pemecahan Masalah untuk Meningkatkan Kemampuan Berfikir Kritis. Tujuan: Penelitian ini bertujuan untuk mengetahui efektivitas lembar kerja siswa berdasarkan pemecahan masalah dalam pembelajaran sains untuk meningkatkan keterampilan berpikir kritis siswa. Metode: Populasi penelitian adalah semua siswa sains kelas sepuluh di salah satu SMA di Lampung Selatan pada semester genap tahun akademik 2017/2018 dan sampel dipilih menggunakan cluster random sampling. Penelitian ini menggunakan metode eksperimen semu dengan Desain Kelompok Kontrol Pretest-Posttest. Pengaruh penggunaan lembar kerja siswa berbasis pemecahan masalah diukur berdasarkan nilai rata-rata n-Gain keterampilan berpikir kritis siswa. Temuan: Hasil penelitian menunjukkan bahwa nilai rata-rata n-Gain dari keterampilan berpikir kritis siswa dalam eksperimen adalah 0,71 dan ukuran efeknya adalah 0,89. Kesimpulan: lembar kerja siswa berdasarkan pemecahan masalah dalam pembelajaran IPA sangat efektif untuk meningkatkan keterampilan berpikir kritis siswa.

Kata kunci: Lembar kerja siswa, pemecahan masalah, kemampuan berfikir kritis.


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