The Influence of the Problem-Based Learning Model on Students' Comprehension of the Concept of Pressure in Solids in Grade IX

The learning model used in learning science concepts should have a strong influence or impact on students' understanding of a science concept. Researchers in this case conducted research related to the Influence of the Problem Based Learning Learning Model carried out at SMPN 2 Solokanjeruk with samples of class IX-I on the concept of Pressure on Solids .Researchers conducted a pretest test before conducting learning with the Problem Based Learning learning model, and conducted a posttest test after conducting learning using the Problem Based Learning Learning Model. After conducting inferential statistical analysis (2 related samples), Researchers found that Science Learning with the Problem Based Learning Learning model had a strong impact on student learning outcomes. The results of the N-Gain data analysis had an average score of 59.9817 or 0.599817, namely, the increase in students' science understanding was in the moderate category, with an N-Gain percentage of 59.9817% having a fairly effective category. The results of this research study identified an increase in high science understanding of 41%, an increase in medium science understanding of 49%, an increase in low science understanding of 5%, no increase in understanding of 2.5%, and a decrease in understanding of 2.5%. Based on this, the Problem based learning model on the concept of Pressure on Solids for class IX-I students of SMPN 2 Solokanjeruk has a fairly good impact on students' science understanding.