An inquiry-based laboratory for local material-based enzyme kinetics to improve students^ critical thinking ability A Zikrina, Liliasari and F M T Supriyanti
Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
Abstract
Inquiry-based laboratory is a practicum design consisting of four stages of implementation, namely pre-lab activities, discussion activities, practicum and post-lab assignment. The purpose of this study was enhancing students^ critical thinking ability using inquiry-based laboratories of enzyme kinetics on local material. This study was designed using a quasi-experimental method with pre-experimental-one group pretest-posttest design. Subjects of this study were the sixth semester chemistry study program students enrolled in biochemistry practicum courses totaly 55 students. Instrument used in this study was a reasonable multiple choice question that includes two indicators of critical thinking ability (basic support and inference) and also student worksheet. The results showed that the inquiry-based laboratory of local material-based enzyme kinetics was able to improve students^ critical thinking ability with a significance value of 0,000 <0.05 and also using inquiry-based laboratory enhance critical thinking ability in medium category with a value N-gain average of 0,62. Two critical thinking indicators namely basic support and inference also differ significantly with a significance value of both 0,000.
