P.I.V.D. Radjibu, H. Kuswanto, Sugiharto
The purpose of this study was to determine: (1) Students' critical thinking skills taught using the Group Investigation and Direct Instruction learning model. (2) The ability of students to think critically in terms of students' scientific communication skills in physics, especially the concept of Simple Harmonic Motion (SHM) in springs after applying the learning model of group investigation (GI) and direct instruction (DI) assisted by Ispring Quiz Maker media. The experimental class is class X MIA 3 and the control class is class X MIA 4. The design of this study is the True Experimental Design type Pretest-Postest Control Group Design. The instrument consisted of: (1) formative critical thinking test (ispring quis maker test instrument), (2) observation sheet of scientific communication of students, and (3) documentation. Data in this study were analyzed using normalized gain values, one-party t-test, and analysis of students' scientific communication skills. The results showed that: (1) students' ability to think critically in learning using the Group Investigation model is better than Direct Instruction. (2) students who have high scientific communication skills are better at critical thinking. © 2020 Published under licence by IOP Publishing Ltd.
Physics Education, Universitas Negeri Yogyakarta, Sleman, Indonesia; Physics Education, Sman 1 Prambanan, Sleman, Indonesia
