LITERASI SPASIAL SISWA DALAM TRANSFORMASI GEOMETRI BERDASARKAN LEVEL BERPIKIR VAN HIELE

This study aims to describe students’ spatial literacy based on the Van
Hiele levels of thinking in the topic of geometric transformations
among eleventh-grade students at MAN 2 Palu. This research
employed a descriptive qualitative approach with three students from
class XI C as the subjects, selected based on the results of the Van
Hiele thinking level test, each representing the visualization, analysis,
and informal deduction levels. Data were analyzed using qualitative
data analysis procedures. The findings show that students’ spatial
literacy varies according to their thinking levels. Students at level 0
(visualization) have fairly good visualization skills but remain weak in
reasoning and communication. Students at level 1 (analysis)
demonstrate good spatial literacy in terms of visualization and
reasoning, although their communication skills are not yet supported
by logical justification. Students at level 2 (informal deduction) show
strong spatial literacy across all indicators, including visualization,
reasoning, and communication. Overall, the results indicate that higher
Van Hiele thinking levels correspond to higher spatial literacy in
solving geometric transformation problems.