The system of upbringing and education is changing throughout history. In the educational system in Croatia, a significant change occurred in 2011 with the introduction of the National Framework Curriculum and the transition to the competence system. The term curriculum comes from the Latin term curicculum which means flow, sequence. The curriculum prescribes learning objectives, learning tasks, learning content, conditions, organization and technology of learning and teaching, and evaluation of student achievement. The national framework curriculum is the starting point for the development of subject curricula. In the diploma thesis, the subject curriculum of Croatian Language and Computer science and the curriculum of the interdisciplinary topic The Use of Information and Communication Technology were analyzed. The aim of the diploma thesis was to connect the subject curricula, i.e. to find activities that can correlate the subjects in the first and second grade of primary school. Correlation is the interconnection of two or more subjects, and the correlation enables students to better connect their teaching contents. In the thesis several different activities that connect the Croatian language and Computer science are presented. The main connection is manifested through the outcomes of the A domain, communication and language, Croatian language and the outcomes of the C domain, digital literacy and communication, Computer science. Subjects can be connected with the help of different activities, and the biggest problem of connecting happens if Computer science is maintained by the subject teacher. In this case, the communication between the subject teacher and the teacher needs to be excellent so that the subjects can be connected in the best possible way