F.R. Agustina, Dwikoranto
This research aims to describe the feasibility of STEM model student worksheets in guided inquiry learning with PhET Simulation media on Hooke's Law material in terms of validity, effectiveness and practicality, due to the lack of critical thinking skills of students. This development research uses a four-D model with the following steps: design, define, develop and disseminate with high school students as research targets. Data were analyzed descriptively quantitatively. The results showed that: (1) The level of validity of student worksheets get a score of 86.36% with a very valid category; (2) Practicality level of student worksheets get through observation sheets and questionnaire responses from students get a practicality score of 88% with a very practical category; and (3) The level of effectiveness of the worksheets obtained from the N-gain calculation get a score of 0.56 in the medium category. Based on these things, it can be concluded that the developed student worksheets are feasible to be used to improve the ability students' critical thinking. © 2021 Institute of Physics Publishing. All rights reserved.
Faculty of Science and Mathematics, Universitas Negeri, Surabaya, Indonesia
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