INCREASING OF CRITICAL THINKING SKILLS USING INQUIRY LEARNING MODEL IN SUB MATERIAL SOLUBILITY AND SOLUBILITY PRODUCT IN GRADE XI RSBI SENIOR HIGH SCHOOL 1 BOJONEGORO

Abstract

Abstract: The aims of these research to know the implementation of inquiry learning model to practice  critical thinking skills and to know the critical thinking skills improved after the implementation of inquiry learning model . The type of this research is a quasi-experimental research design with one group pretest posttest design. The research was carried out in class XI IPA 5 SMA Negeri 1 Bojonegoro. The instrument used was the observation sheet of implementation of  inquiry learning model and critical thinking skills test sheet. Data were analyzed by quantitative descriptive method. The results showed that implementation inquiry learning model in sub material solubility and solubility product at the meeting I accomplished well, with the percentage of 78.46%, implementation in both II and III meeting accomplished very well with the percentage of 82.14% and 81.42%. Increasing in overall critical thinking skills were high with <g> value is 0.8, which respectively increased critical thinking skills to formulating questions, formulating hypotheses, designing experiments, reported the results of observation, the ability to reason and draw conclusions based on the facts were high, with <g> respectively 0.81, 0.84: 0.75: 0.85: 0.74 and 0.89.

Key words: inquiry, critical thinking, solubility, solubility product

Abstrak: Penelitian ini bertujuan untuk mengetahui keterlaksanaan model pembelajaran inkuiri dalam melatihkan keterampilan berpikir kritis dan peningkatan keterampilan berpikir kritis setelah diimplementasikan model pembelajaran inkuiri. Jenis penelitian yang digunakan adalah quasi eksperimen dengan desain penelitian one group pretest posttest design. Penelitian ini dilaksanakan di kelas XI IPA 5 SMA Negeri 1 Bojonegoro. Instrumen yang digunakan adalah lembar pengamatan keterlaksanaan model pembelajaran inkuiri dan lembar tes keterampilan berpikir kritis. Data dianalisis dengan metode deskriptif kuantitatif. Hasil penelitian menunjukkan bahwa keterlaksanaan model pembelajaran inkuiri pada sub materi kelarutan dan hasil kali kelarutan pada pertemuan I terlaksana baik dengan persentase 78,46%, pertemuan II dan III terlaksana baik sekali dengan persentase 82,14%, dan 81,42%. Peningkatan  keterampilan berpikir kritis secara keseluruhan termasuk kategori tinggi dengan <g> sebesar 0,8, yang mana masing-masing peningkatan keterampilan berpikir kritis merumuskan pertanyaan, merumuskan hipotesis, merancang percobaan, melaporkan hasil observasi, kemampuan memberikan alasan, dan menarik simpulan sesuai dengan fakta termasuk kategori tinggi, dengan <g> masing-masing adalah 0,81; 0,84; 0,75; 0,85; 0,74 dan 0,89.

Kata kunci: inkuiri, berpikir kritis, kelarutan, hasil kali kelarutan