Implementation of LKPD-Assisted Problem-Based Learning Models as an Effort to Improve Students' Mathematical Reasoning Ability at Percut Sei Tuan State Junior High School

This study aims to improve students' mathematical reasoning abilities at SMP Negeri 1 Percut Sei Tuan with a problem-based learning model. This type of research is class action research. The research was conducted in Class VII-1 of SMP Negeri 1 Percut Sei Tuan with a total of 32 students. This study uses data reduction and exposure. Based on the results of the study, it can be concluded that the application of a problem-based learning model using LKPD can improve students' mathematical reasoning abilities in SMP Negeri 1 Percut Sei Tuan. This is based on the achievement of predetermined success indicators, where the average percentage of classical mastery of students' mathematical reasoning abilities has reached 85%, the results in cycle II are 90.6%, and student absorption is 68. Furthermore, the learning process by applying the approach of problem-based learning using LKPD is at least in the "good" category, where the score is > 2.5. In the results of this study, the average learning process in the second cycle was at a value of 3.52, which is in the "good" category.