Analyzing mathematical creative thinking ability on sample space materials grade VIII SMP Kanisius Pakem

This study aimed to describe the learning process using problem-based learning for a sample space material and creative thinking ability while solving the problem. The subject of this study is 16 grade VIII students of SMP Kanisius Pakem. The instrument used in this study were observation sheet, Hypotethical Learning Trajectory (HLT) and the student's worksheet. The type of this research is design research. The result then can be classified, represented, and the conclusion can be drawn by comparing the result from the Student's Worksheet and indicators of mathematical creative thinking ability. The result of this study were using problem based learning is the mathematical creative thinking does not require student's answer to be correct, but more importantly that they have displayed some indicators of mathematical creative thinking while solving the problem.