This research aims to produce teaching materials in the form of learning modules on theme 1. The type of research used is Research and Development (R&D) research using the 4-D method, namely define, design, development and disseminate.This research used a validation questionnaire which was validated by 3 validators and practicality by 1 teacher and class III students at SDN 33 Kinali. The effectiveness test is the test results of class 33 students at SDN Kinali. The research results show that the resulting module is categorized as very valid with an average score (94.44%) for both material (83.33%), language aspects (100%), and design aspects (100%). The resulting module was categorized as very practical by teachers with an average of (100%), and was categorized as very practical by students with an average of (100%). The research results on the effectiveness test were categorized as very practical with an average of (100%). So it can be used in the science learning process in class III elementary school