This final thesis deals with the topic of medicinal herbs, their characteristics and active substances, ways of restrainting, gathering, applying and using them in everyday life where they are needed and useful: cookery, cosmetics, and medicine; as well as the connection of the topic with classroom teaching, and the possibility to present the list of the most common medicinal herbs throughout the school subject Science. In the following paragraphs,the paper liststhe most common medicinal herbs which can be found in Istria,a region of the Republic of Croatia. Specific and unique for her land relief, non-contaminated terrain with peticides and chemicals, Mediterranean climate and seclusion from other parts of the country- Istria is an excellent region for the development of this type of herbs, primary because they're,used for healing people's problems and difficulties. The topic can be processed in Science class,especially throughout the first four years of elementary school. The future of planet Earth lays in the importance of educating children about the importance of respecting nature and coexisting within it from an early age,so that that knowledge could live on in their children. It's important to persist in educating children and young adults about the importance and protection of the world.