Development of Entrepreneurship-Based Mathematical E-Module and Its' Learning with PBL to Improve Students' Mathematical Problem Solving Ability

The purpose of this study was to determine the validity of the entrepreneurship-based mathematics E-Module, the practicality and effectiveness of learning mathematics with the PBL model assisted by the entrepreneurship-based mathematics E-Module to improve students' mathematical problem solving abilities. This research is a development research with the ADDIE model which is applied to class XI of SMK Negeri 1 Lemahabang, Cirebon Regency. The results showed that the entrepreneurship-based mathematics E-Module was declared valid with a percentage of the E-Module value of 92.88% in the "Very Eligible" category. Mathematics learning with the PBL model assisted by the E-Module mathematics based on entrepreneurship is stated to be (1) practical with a percentage of 86.9% of students and 96% of teachers falling into the "Very Practical" category; (2) effective based on the results of the posttest which showed that the experimental class achieved individual learning mastery of 75% with and achieved 75% classical learning completeness compared to the control class which did not achieve individual and classical learning mastery with grades . In addition, through the independent sample t test, it was found that the posttest results of the experimental class were better than the control class.