This thesis deals with the NTC learning system, which implies the application of certain methods with goal of improvement of learning and teaching. In the first part of the thesis, emphasis is placed on the features of the system. Detailed analysis of the three phases of the program is presented, by which synapses inside brain cortex are developed, where each of them is adapted to different age and activates certain centers of the brain. Exemplars of the exercises mentioned by the founder of the system, Dr. Ranko Rajović, are shown. Also, the first part of the paper encompasses an overview of the research that confirms the positive effect of performing exercises on the child's neurophysiology, as well as on better results in the educational system. The second part of the paper covers theoretical presentation of language expression, one of the four areas of the croatian language, which implies the application of acquired knowledge from all fields of the subject. In addition, the methodology of the croatian language with an emphasis on the teaching systems, methods and procedures used to structure the teaching units of language expression is shown. To conclude, four curricula were presented with the teaching units issued by the Curriculum for the Primary Schools. Preparations were made according to the methodical template for croatian language, using the predetermined systems from the methodology literature, but by applying methods and procedures from the NTC system. The result of the curriculum preparation has a constructive impact on the teaching model and the acquisition of knowledge among students.