Development of Problem-Based Mathematical Learning Device on Problem Based Learning (PBL) Models by Using GeoGebra Aids to Improve the Problem Solving Skill of the Students in VIII Class of Junior High School (Preliminary Research)

摘要

Students' low ability in mathematical problem solving can still be found by the researcher in the field. This can be seen in the implementation of learning at school, students are not get used to solved the problem appropriately. Some problem solving indicators are not found during students solved the problem. Students' mathematical learning ability can be improved by using learning device based on PBL by using GeoGebra aids. The purpose of this research is to reveal the process and the result of PBL learning device development by using GeoGebra aids in improving students' mathematical problem solving skill. GeoGebra is software aimed to solve mathematics problem. One of them is to create graphic. This is a development research. The research model is Plomp model which consists of three phases, namely, preliminary research, development or prototyping phase, and assessment phase. In this part, the researchers only discuss about preliminary research. Researchers employ some instruments such as: student questionnaire, teacher interview guideline, field note, and preliminary test question sheet. Data analysis result shows that 1) students' mathematical problem solving is still low, 2) LKPD used by the students has yet be able to facilitate them to improve their problem solving skill, 3) students' are less engaged in the learning process, 4) students like LKPD that is easy to understand, has color, and has clear pictures.