Pengembangan Lembar Kerja Siswa (LKS) Saintifik Berbasis Keterampilan Berpikir Kritis untuk Siswa Kelas V SD/MI di Kabupaten Jombang
This research aims to develop Student Worksheet (LKS) scientifically based on indicators of critical thinking skills. LKS was developed using a 4D model, which is reduced to 3D, with a one-group pre-test post-test design design. The research activity is implemented in two replication on science lesson in Grade V of SD Negeri Brodot I, Jombang Regency. The results show that LKS meet the criteria of validity and effectiveness. The level of reliability and validity of LKS respectively shows the average percentage of 86.35% and 92.64%. The scientific criterion shows an increase of n-gain over 0.70 in the indicator of questioning and responding to the question, while the high-n-gain value for critical thinking is indicated by the analysis indicator and the formulation of experimental variables. LKS legibility was measured using a cloze test indicating a 95.38% percentage. In this study the student activity is dominant in the activities of doing the LKS and conducting scientific experiments. Based on the findings of the study it can be concluded that the developed LKS is feasible to trained scientific ability and critical thinking skills.
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