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Metacognitive skill is a high level of thinking or often known as thinking about thinking, which is closely related to critical thinking and problem-solving skills. This study aims to describe the importance of metacognitive skills in training critical thinking and problem-solving skills. This research used a survey method with a descriptive approach. The instrument used was a questionnaire distributed via Google Form. The sample of this study consisted of 10 (8 female and 2 male) science teachers who teach in class VIII. The results showed that 90% of teachers had not used metacognitive-based worksheets in science practicum activities about vibrations and waves even though all of them have known what metacognitive skills are, 90% had not any reflection activities for students before and after the experiment, 70% had never trained their students to determine the purpose, 60% of the worksheets used have not trained students to identify and analyze a problem related to experimental data related to the practicum to be carried out, and 80% and 80% of students are not trained to design practical tables. It can be concluded that it is important for metacognitive-based worksheets to train students to improve critical thinking and problem-solving skills
Fauziah et al. (Sat,) studied this question.