Development of mathematics learning tool based on open-ended with jumping task and the effects on creative thinking ability of junior high school students

This study aims to develop a learning tool based on open-ended with jumping task on the material of the system of linear equations in a two variable for grade VIII junior high school students and to determine the effects on students’ creative thinking ability. This research was mixed method, which combines qualitative research and quantitative research. The development model used in this research is Thiagarajan which goes through four stages, namely define, design, develop, and disseminate. Meanwhile, for experimental research using quasi experimental design, namely pretest-posttest for non equivalent control group design. The subjects of this study were students of Islamic Junior High School Wahid Hasyim Balung. Two classes were selected as the research sample, class 8A as the experimental class and class 8B as the control class. Students’ creative thinking abilities were measured using tests of creative thinking ability. The results showed that learning tool based on open-ended with jumping task met the criteria of validity, practicality, effectiveness, and had a significant effect on students’ creative thinking ability.