The Influence of PBL on Students' Communication Skills and Thinking Structure in Computer Systems Learning in the TKJ Department of Class 2 of Vocational High Schools

Abstract

This study aimed to determine the effect of the Problem Based Learning (PBL) model on students' communication skills and thinking structure in Computer Systems learning among eleventh-grade students of the Computer and Network Engineering (TKJ) program. The study employed a Pre-Experimental Design with a One Group Pretest-Posttest Design involving 15 students. The data were analyzed using the Wilcoxon test and N-Gain analysis. The results showed that the mean score increased from 66.80 to 81.33 . The Wilcoxon test yielded a significant value of 0.001 < 0.05 , indicating a significant effect of PBL on students' communication skills and thinking structure. The N-Gain score of 0.3895 was categorized as moderate. Therefore, the PBL model was found to be moderately effective in improving students' communication skills and thinking structure in Computer Systems learning.