Development of Approach-Based Learning Tools Problem-Based Learning Assisted Desmos Classroom Activities Oriented to the Critical Thinking Skills of High School Students
Abstract
This study aims to develop a problem-based learning (PBL) learning tool with the help of Desmos Classroom Activities that is oriented towards the critical thinking skills of high school students. The development model involves validation stages, limited trials, and field trials. The research subjects consisted of expert lecturers as validators, a mathematics teacher, and 34 grade X high school students. The validation results show that the tool meets the criteria of "valid" to "very valid." In terms of practicality, the tool received an assessment of "very practical" from teachers and "practical" from students, and the implementation of learning is in the high category. The effectiveness of the tool is reflected in the results of the field test, where more than 70% of students exceeded the Learning Objective Completion Criteria (KKTP) with an average critical thinking ability score of 81.33. Thus, the developed tool is proven to be valid, practical, and effective, so that it is suitable for use in mathematics learning to improve students' critical thinking skills.
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DOI: http://dx.doi.org/10.18415/ijmmu.v12i10.7158
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