This article aims to describe the mapping done by teachers in elementary schools regarding students' backgrounds before they apply differentiated instruction. Mapping students' backgrounds is very important considering the focus of attention from implementing differentiated instruction is alignment with student characteristics, so as to make learning comfortable and enjoyable. There are several methods and aspects used for mapping student backgrounds. The main thing that is expected from the implementation of differentiated instruction is the suitability of what is learned with what is found in students. With these conditions, it is hoped that it will create fun learning that will support an increase in the academic achievement of learning outcomes. There were 44 teachers who participated in this study which was carried out through workshop activities in the community service program. The results of the study revealed that there were things that became problems in mapping students' backgrounds in the implementation of differentiated instruction.