Budi Jatmiko, Binar Kurnia Prahani, Munasir, Z. A. Imam Supardi, Iwan Wicaksono, Nia Erlina, Paken Pandiangan, Rosyid Althaf, Zainuddin
Critical thinking skills are one of the 21st century skills that are effectively trained by using the OR-IPA and Problem Based Learning (PBL) Model, therefore this research aims to compare the effectiveness of both. Research design used True Experiment with Randomized Subject Control-group Pre-test and Post-test with 94 pre-service physics teachers. Data collected using the critical thinking skills test and the student response sheet, and then analyzed using t-test and N-gain. The results showed: (1) the teaching instruments of OR-IPA and PBL Model have fulfilled the validity requirements (rα ~.26) and reliability (α =.96 -.99). (2) Each of OR-IPA, PBL, and Conventional Model can significantly increase critical thinking skills at α = 5%, respectively with average N-gain: medium (.60), medium (.48), and low (.14); with the student response of: very positive, very positive, and less positive. (3) The OR-IPA and PBL Model are effective to improve critical thinking skills, while the Conventional Model is ineffective, and the OR-IPA Model is more effective compared to the PBL Model. Implication of this research is that the OR-IPA Model can be an innovative solution to improve critical thinking skills, but there is still a need for repetitive research like this. © 2018, Scientia Socialis Ltd. All rights reserved.
State University of Surabaya, Surabaya, Jalan Ketintang, Surabaya, 60231, Indonesia; University of Jember, Jalan Kalimantan, Jember, 68118, Indonesia; Indonesia Open University, Jalan Cabe Raya, Jakarta, 15418, Indonesia; Head of Public Senior High School 3 Jember, Provincial Education Consultant East Java, Jalan Jend. Basuki Rahmad Number 26, Jember, Indonesia; Syiah Kuala University, Jl. Teuku Chik Pante Kulu, 23111, Aceh, Indonesia
