Language is an abstract symbol system used for communication between people. Knowledge of language is the basis for acquiring all the knowledge, and language acquires meaning through communication. Communicative competence results from the acquisition of mother tongue, and communication in the mother tongue implies knowledge of the language, grammatical, orthographic and speech norms, features of functional styles and communication in different communication situations. The adoption of language norms, normative grammar and theoretical rules refers to linguistic competence, and linguistic communication through the practical use of all the theoretical knowledge refers to communicative competence. Noam Chomsky was the first to talk about the concept of communicative competence, and after him, numerous scientists came up with new theories and conclusions about linguistic and communicative competence. Language is important for upbringing and educationof children, where language is medium used for communication between all of the participants, as well as a medium by which pupils are being educated, but also the subject of education itself. It is important for the entire curriculum, and especially for the language communicativedomain. The basic purpose of the language communicativedomain is to train pupils for language reception, production and interaction. The basis for purposeful language learning is carrying out language activities. Language skills are listening, speaking, reading and writing activities that facilitate the acquisition of linguistic content, and the teacher should incorporate them into the teaching as efficiently as possible using his pedagogical and methodical knowledge. The teacher is a speech role model for the pupils, which raises the importance of the development of his language and communicative competence to a high levels. The teaching process must be based on the development of the pupil's communicative skills because the level of the pupil's communicative skills demonstrates the success of the entire educational process. Language and communicative competence develops since birth, but systematic learning and mastering of language begins by enrolling the school. The Croatian language textbook also has a major role in learning.That is why it must be adapted to the pupil's level of linguistic and cognitive development and it must encourage the pupil's language development and communication. By reviewing the Croatian language textbooks, one can see the author's desire to develop pupil's language and communicative competence with methodical templates, activities and tasks and to encourage them to learn the language.