Fungi make a separate empire of the living world. They take the necessary organic substances to live and grow from nature, so we divide them into saprotrophs, symbionts and parasites. The body of the fungi is built of densely intertwined hyphae and is called a mycelium. In some places from mycelium grow the prolific fungi. The fungi that we often perceive in nature are propagate by spores. Fungi play an important role in the daily diet, but also in the treatment of various diseases. However, nature conservation has not covered fungi in the past. In last decades, the situation has been slowly changing. In order to protect the fungi and their habitats in the Republic of Croatia were founded the Croatian Mycological Society, the Croatian Mycological-Mushroomeering Association and the Museum of lyophilized mushrooms in Zagreb. Students learn about fungi in the fourth grade of elementary school. In textbooks of Science for the fourth grade of elementary school attention is focused on unprofessional fungi harvesting and a warning that fungi can only be picked by people who know them perfectly. Based on analysis, we can conclude that the contents of the fungi are poorly represented in textbooks of Science. In these days students spend too much time indoors. Therefore, it is necessary to conduct a field teaching. Hiking lodge in the vicinity of Zagreb is an excellent place to conduct a field teaching A wonderful world of fungi. Students in field teaching explore the world around them and they develop an interest in fungi and protect their habitats.