The brochure “Lexika im Unterricht der Politischen Bildung” introduces the political encyclopaedia for young people and the online encyclopaedia PoliPedia and offers tips, ideas and suggestions for working with encyclopaedias. The examples each contain information about the aim of the exercise, a reference to the recommended age group, a list of the materials required and a description of the process. A collection of links to other freely available online encyclopaedias and glossaries as well as further ideas and suggestions form the conclusion.