EKSPLORASI PENALARAN SPASIAL SISWA SEKOLAH DASAR DENGAN MEDIA PEMBELAJARAN MANIPULATIF

Abstract

This study aims to provide an in-depth description of students' spatial thinking through the use of a manipulative learning medium based on a virtual geoboard. The research employed a qualitative approach with a case study method, conducted at SD Negeri Pondok Aren 02 in South Tangerang City. The study involved three students with high, medium, and low mathematical abilities. The instruments used were a spatial thinking written test and interview guidelines. The research procedure consisted of five stages: (1) pre-test administration, (2) initial interview, (3) exploration using the virtual geoboard, (4) post-test administration, and (5) final interview. The findings indicate that the use of a virtual manipulative medium such as the virtual geoboard can enhance students' spatial thinking skills, particularly for those with medium and low mathematical abilities. Students showed improvement in imagining, visualizing, and understanding spatial relationships between parts of three-dimensional shapes. This medium is considered effective for supporting mathematics learning that requires strong spatial and visual abilities, especially in geometry topics involving solid figures.