The Effect of Implementing Problem Based Learning (PBL) Model with Teaching Aids for Ability Mathematical Problem Solving

This research aims to determine the effect of the problem-based learning (PBL) model assisted by teaching aids on mathematical problem-solving abilities. This research is a quasi-experimental research using a pretest-posttest control group design. The population in this study was all grade 8 students at SMPN 4 Cibal, with a total of 44 people. The sampling technique used was saturated sampling. The research sample in the experimental class was grade 8A, totaling 22 students who applied the problem-based learning (PBL) model, which is assisted by teaching aids is applied to the experimental class. In contrast, the control class is class VIII B, which amounted to 22 students by applying conventional learning models. The instrument used in this research is a test instrument in the form of a description test. The analysis technique used is the t-test. From the data analysis, the comparison 𝑡-count = 3.41 while 𝑡-𝑡𝑎𝑏le = 1.72 at the 5% significance level. Based on the decision rule where 𝑡-count > 𝑡-𝑡𝑎𝑏le means 𝐻0 is rejected. Based on the research results, it can be concluded that the demonstration model supported by tools in the problem-based learning (PBL) approach positively influences students' ability to solve mathematical problems.