Profil Kemampuan Siswa Kelas VII MTSN 9 Jember Dalam Menyelesaikan Soal Cerita Bangun Datar Berdasarkan Level Berpikir Geometri Van Hiele

Abstract

This research was conducted to determine the ability profile of grade VII students of MTsN 9 Jember in solving story problems based on van Hiele's level of geometric thinking. The data collection method used is the test method and the interview method. The triangulation used is the triangulation method, which is to compare the results of the interview with the test results of story questions based on van Hiele's level of geometric thinking. The van Hiele leveling test results from 26 students obtained 13 students are at level 0 (visualization), 2 students are at level 1 (analysis), 2 students are at levels between 0-1, 1 student is at level 2 (informal deduction) , while the remaining 8 students are still in the previsualization stage. Because the results of the study did not have students who were able to level 3 (deduction) and level 4 (rigor), it was replaced with 2 students from levels between 0-1. Meanwhile, students who are still in the previsualization stage are not used as research subjects. Based on the results of the ability to solve story questions based on van Hiele's geometric thinking level and interviews that have been conducted, it has shown appropriate results between van Hiele's geometric thinking level indicators and students' thinking levels, but for students with levels between 0-1 it is more visible at the level of analysis when solving problems that are categorized as easy and moderate.