Since the beginning of mankind a need to communicate has been one of the most important human needs. The period of communication from the cave drawings and rituals to communication by cell phones and computers was marked by numerous information communication revolution that has significantly changed the lives of people. The time in which we live can be reasonably considered a media age, because the human daily life today is almost unthinkable without the numerous massmedia: television, books, newspapers, the Internet and the radio. The radio is a medium which has been present in people's lives almost a century, and is preceded by a book as the oldest massmedium. The development of radio broadcasting began in the United States - and it was soon resumed in Europe. Already in 1926 the first radio in Croatia was announced. The radio, which was once a cultural and educational media, today it is mainly attributed to the status of background entertaining media that is generally listened for music. The radio audience today includes all generations of listeners including children. The habit of listening to radio by younger and olderl isteners is the subject of numerous previous studies, but the habits of the youngest listeners we do not know much. The radio as a device that produces sounds children with parents get know very early, while the media role of the radio children find out during their education, first in the third grade of primaryschool.The development of communication, the media in general and the radio as media with insight into today's radiophony in Croatia as well as the importance of media literacy in the youngest to competently use any media including radio is the content of the theoretical part of the diploma thesis. Beside thetheoretical work the the thesis includes practical part: interviewing students of the second, the third and the fourth grade of the elementary school August Šenoa Osijek on radio listening habits and the analysis and comparison of the content of radio and radio broadcasts in readers and textbooks in the Croatian language in the third grade of the elementary school. The survey results show that most students usually listen to the radio less than an hour a day driving the car, and as the most listened radio content convincingly includes music. Children's radio shows are poorly known to the students. In the studied reading books and textbooks informative content on the radio prevails while listening to radio broadcasts is poorly represented.