Application of problem based learning (PBL) to increasing student activity in the subject matter of temperature and heat

The study of Problem Based Learning (PBL) application on the subject matter of temperature and heat aims to see: (1) an increase in the activity of students taught by applying PBL learning models. (2) increased student learning performance by using student worksheets. (3) Researcher's achievement when applying PBL in learning. This type of research is quasi experiment with a population of all students of class X MIA MAN Binjai as many as six classes. The research sample was determined by simple random sampling technique. The instrument used to collect data consisted of 3 student worksheets based on 3 sub-materials in the subject matter of temperature and heat and student activity observation sheets for each sample. Descriptive data analysis results, obtained research findings are: (1) the activity of students taught by applying PBL learning models increases with the active category. (2) the learning performance of students who learn to use student worksheets increases in each learning. (3) Researchers were able to apply learning with PBL models with good categories.