ANALISIS KESALAHAN SISWA DALAM MENYELESAIKAN SOAL CERITA PADA MATERI PYTHAGORAS BERDASARKAN TEORI KASTOLAN DI SMP NEGERI 2 LANGOWAN: ANALYSIS OF STUDENTS’ ERRORS IN SOLVING STORY PROBLEMS ON PYTHAGORAS MATERIAL BASED ON KASTOLAN’S THEORY AT SMP NEGERI 2 LANGOWAN. jsoscied. 2024;7(2):610-617. doi:10.32531/jsoscied.v7i2.860