E-book Based on Mobile Learning Used Problem Based Learning (PBL) Model to Improve Problem-Solving Ability in Statistical Material

Abstract The research aims to developed a mobile learning-based e-book that used problem-based learning (PBL) to improve problem-solving abilities in statistical materials that meets validity, practically, and effectiveness. The type is a Development Research used the Four-D model (define, design, development, and disseminate). The validation results of the material feasibility average was very good at 82% and the validation of the media was 85.92%. The results of the response questionnaire by students was 88.22% and by the teacher was 83.31%, included in the very practical category. Therefore the mobile learning-based e-book developed is valid to use in mathematics classes. The result of e-book effectiveness meets the effective criteria with the completeness study of students at 84%. From the products tested, it was concluded that the students problem-solving abilities in statistics material used mobile learning-based e-book that had been developed were better than used existing products. Thus, this mobile learning-based e-book used a problem-based learning model to improve problem-solving abilities in eighth grade of statistical material which is suitable for uses and recommended at mathematics learning.