Problem based learning instruction assisted by e-book to improve mathematical representation ability and curiosity attitudes on optical devices

This study aims to determine the increase in mathematical representation abilities and curiosity attitudes of students of SMA Negeri 1 Banguntapan through learning Problem Based Learning assisted with e-books. The research subject is MIPA 2 class XI with 30 samples. Questionnaire is given at the beginning and end of learning to measure students' curiosity attitudes. The pretest and posttest questions are in the form of descriptions to measure the ability of mathematical representation. There are two indicators of mathematical representation, namely (1) determining the exact equation in accordance with the problem, and (2) carrying out mathematical operations into the equation. Indicator (1) increase is 61,90% and 66,67% for indicator (2). Overall mathematical representation improvement is 55,83%. The percentage of curiosity attitudes of most students are in the good category that is equal to 57%. There is an increase of 27% when compared to the attitude of curiosity before learning PBL assisted by e-book that is equal to 30%. It can be concluded that problem based learning instruction assited by e-book can improve mathematical representation and curiosity attitudes of students on optical devices.