Abstract
Due to the limited Student Worksheets (SW) that are specific to the aspect of understanding concepts encourage the need for breakthroughs to develop them. This study aims to produce teaching materials as student worksheets with Problem Based Learning (PBL) on the understanding of mathematics concepts in grade VII students and describe the quality of SW based on aspects of validity, practicality, and effectiveness. The SW development model uses the ADDIE (Analysis, Design, Development, Implementation, and Evaluation). The SW that is developed must meet the following criteria: valid, practical, and effective. The results of the validity assessment of the material and media experts and the assessment of teachers in schools obtained an average score of 4.23 (maximum score of 5.0) with excellent criteria. The practicality aspect is stated based on the questionnaire of students' responses when learning takes place with an average score obtained at 3.30 (maximum score of 4.0) with a good category. Then, the effective criteria are shown from the results of the students' mathematical concept ability tests through the problem description, which consists of seven indicators of understanding mathematical concepts. Obtained a score of each indicator 64.5; 82.0; 75.0; 92.7; 86.4; 65.6; and 63.5 shows that each indicator has a good category above. So based on the results of aspects of validity, practicality, and effectiveness shows that SW with PBL in terms of understanding mathematical concepts can be applied in students' learning at school. This SW is expected to have a positive contribution to improving students' understanding of mathematical concepts in school.
Highlights
Mathematics is a fundamental lesson learned from kindergarten to bachelor [1]
The purpose of this study is to develop Student Worksheet s (SW) based on problem-based learning on the ability of students to understand the concepts of Grade VII students
Worksheets that have been developed based on Problem Based Learning (PBL) have fulfilled valid, practical, and effective criteria
Summary
Mathematics is a fundamental lesson learned from kindergarten to bachelor [1]. According to [2], [3] mathematics is a discipline that has an abstract concept. To be able to increase the low ability, alternative solutions that can be done are by confronting new problems in real life with students Such learning is called Problem Based Learning (PBL). PBL is a means for students to be able to think critically, have the skills to solve problems in real life, so students can find their concepts. This PBL approach can be presented in a Student Worksheet (SW) because the nature of the SW can be developed according to the conditions and situations of learning activities to be encountered [8]. A task that is ordered in the worksheet must be clear about the basic competencies that will be achieved
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