The article describes the design and process of preparing revised curricula, study materials and technical provision of teaching subjects focused on the processing of technical documentation, which belong to the initial subjects of technical education. The goal is to effectively prepare first-year students at a technical university for their further studies and work experience in the field of engineering. Today, modern construction is carried out exclusively using 3D CAD systems. In order to achieve the desired goal -creating conditions for making drawings corresponding to real practice, the intrasubject integration of the teaching of the theory of technical documentation and the basic principles of work in the 3D CAD system is therefore key. The starting point of the curricular revision was a comprehensive analysis of the current state of teaching technical documentation. The idea of cross-curricular integration was also supported by the students' opinions on the implementation of the CAD system in the teaching of technical documentation. The research tool for data collection was an online questionnaire. Teaching according to the revised curricula will be applied in the 2022/2023 school year and then subjected to an evaluation of the expected results.