Analisis Learning Trajectory Materi Luas Permukaan dan Volume Tabung Melalui Pendekatan Realistic Mathematics Education (RME) di MTSN 3 Medan

Source abstract

Learning mathematics of cylinder surface area and volume often emphasizes the use of formulas, which may limit students' conceptual understanding. This study aims to analyze students' learning trajectory in learning cylinder surface area and volume through the Realistic Mathematics Education (RME) approach at MTsN 3 Medan. This research employed a quantitative descriptive approach involving 26 ninth-grade students. Data were collected through student worksheets and a learning assessment. The learning activities were organized through several stages, including observing and measuring real cylinder objects, identifying the elements of a cylinder, constructing a cylinder net, determining surface area, and exploring the concept of volume through a concrete filling activity. The findings showed that the four groups were able to complete the activities in the student worksheets well. Students were able to identify the elements of a cylinder, understand the structure of its net, and relate the components of the cylinder to the concepts of surface area and volume. The assessment results indicated varied levels of students' understanding in applying these concepts to mathematical problems. These findings imply that the RME approach can support the development of students' conceptual understanding by guiding them from meaningful real-world activities toward formal mathematical concepts.