ABSTRACT
This study aims to develop an e-learning module for a high school class XI in chemistry on solubility and solubility product results with a scientific approach and determine its effectiveness in terms of student problem-solving abilities. The development of this module adapts Borg and Gall’s (1983) research and development stages consisting of a preliminary analysis stage and requirements, planning, product development, expert validation and revision, small-scale and revised trial, large-scale trial and final revision, and implementation of teaching and learning activities. The main application used in developing the e-module products is 3D PageFlip Professional. The e-module assessment by experts, teachers and students as a whole had a good interpretation. This module is complemented by examples and problem exercises that are completed based on the stages of problem-solving, namely understanding the problem, planning completion, implementing the plan and checking the results. By using this module, the problem-solving abilities of students will be trained. In the implementation phase, research was conducted to determine the influence of the use of an e-module that has been developed comparing the problem-solving ability of the students with the class that use the book. The results show that there were significant differences between students using e-modules and package books. Therefore, it can be concluded that e-modules can be used as a learning resource for students.
