The Effect of Problem Based Learning (PBL) Model toward Student’s Creative Thinking and Problem Solving Ability in Senior High School

This study aimed to analyze whether the gain of student's creative thinking and problem solving ability by using conventional learning and problem based learning model; to analyze whether the gain of creative thinking and problem solving ability of student's taught by the problem based learning (PBL) model was better than conventional learning. This study was quasi experimental research with two group pretestposttest design. The population of this research were all of sudent's of class X SMA Negeri 1 Silimakuta, Saribudolok, North Sumatera academic 2016/2017. The sample of this research were taken by using class random sampling technique consisted of two classes. Class X-B was experimental class taught by problem based learning model, Class X-D was control class taught by conventional learning. The instruments of the research were valid essay test of creative thinking and problem solving ability. The data were analized by using t-test. The results showed that: the average gain of student's creative thinking and problem solving ability taught by conventional learning was in low level and the mean gain of student's creative thinking and problem solving ability taught by problem based learning model was in medium level. The average gain of student's creative thinking and problem solving ability taught by problem based learning model was better than conventional learning. There was an effect of problem based learning model on student's creative thinking and problem solving ability.