This research is Research and Development (R&D) research that follows the ADDIE development model which integrates five stages including analysis, design, development, implementation and evaluation. This research aims to produce a PBL-based e-module that is able to stimulate and improve students' science process skills. This research uses a number of assessment instruments to measure the quality and effectiveness of the e-module being developed, including an e-module validation sheet, a practicality assessment sheet by the teacher, and an observation sheet on students' science process skills. These instruments help researchers gain an in-depth understanding of the extent to which the e-modules developed meet the criteria for suThis research is Research and Development (R&D) research that follows the ADDIE development model which integrates five stages including analysis, design, development, implementation and evaluation. This research aims to produce a PBL-based e-module that is able to stimulate and improve students' science process skills. This research uses a number of assessment instruments to measure the quality and effectiveness of the e-module being developed, including an e-module validation sheet, a practicality assessment sheet by the teacher, and an observation sheet on students' science process skills. These instruments help researchers gain an in-depth understanding of the extent to which the e-modules developed meet the criteria for success and relevance in improving student learning, especially students' science process skills. The e-module validation results show that the e-module is valid with a percentage of 89.02% reaching very feasible criteria. The practical results of this e-module are very practical in terms of material, appearance, language and use. The results of observations of students' science process skills when using PBL-based e-module products are also very suitable for all student groups. From these results it is concluded that the e-module can be used in the class VII science learning process regarding classification of materials and their changes. ccess and relevance in improving student learning, especially students' science process skills. The e-module validation results show that the e-module is valid with a percentage of 89.02% reaching very feasible criteria. The practical results of this e-module are very practical in terms of material, appearance, language and use. The results of observations of students' science process skills when using PBL-based e-module products are also very suitable for all student groups. From these results it is concluded that the e-module can be used in the class VII science learning process regarding classification of materials and their changes.