This study aims to determine the effect of science student books on the material of Light and Optical Instruments integrated with religious values with the STEM PjBL model approach in improving students' spiritual attitudes and scientific literacy. The study used a quasi-experimental quantitative research method with one group pretest-posttest design. Data collection methods using multiple choice tests and questionnaires. The subjects in this study were 31 students of class VIII C MTs Wahid Hasyim Balung Jember. The results showed that the average N-Gain value of spiritual attitudes was 0.46 with the "Moderate" category. While in the scientific literacy variable, the average N-Gain value of 0.61 was also included in the "Moderate" category. So it can be stated that science student books integrated with religious values based on STEM PjBL can improve students' spiritual attitudes and scientific literacy.
                        
                        
                        
                        
                            
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