The Improving of Problem Solving Ability and Students’ Creativity Mathematical by Using Problem Based Learning in SMP Negeri 2 Siantar

The purpose of this study was to determine: (1) the differences improving of problem solving ability and students’ creativity mathematics through problem based learning with students who were through conventional learning, (2) the students' answers through problem based learning and conventional learning. Quasi experimental research with population was all of students in grade VII SMP N 2 Siantar that consist of 7 class, with a randomly class selected and selected class VII-2 as an experiment class and class VII-5 as a control class sample of each respondents were 30 people. Instrument problem solving ability and creativity of students in the description form had been qualified of validity and had a reliability coefficient was 0.858 and 0.857 for each test. By using different test and descriptive analysis of the results were as follows: (1) improving the ability of mathematical problem solving and creativity of students’ who were taught with a problem based learning was higher than conventional learning, and (2) the students' answers were taught with problem-based learning were more varieties and better than conventional learning. Keywords: Problem Based Learning, Problem Solving Ability and Creativity Mathematic