Naibaho, H. “IMPROVING THE LEARNING OUTCOMES OF CLASS X TKJ SMK PERSIAPAN PEMATANG SIANTAR STUDENTS IN BASIC PROGRAMMING SUBJECTS USING A PROBLEM-BASED LEARNING MODEL”. Edelweiss : Journal Of Innovation In Educational Research, vol. 3, no. 1, Oct. 2025, doi:10.62462/edelweiss.v3i1.78.