In this paper, we discussed a methodology for education of German as a foreign language. In order to see how grammar and a function of communication should be linked, we investigated the way how grammar is dealt with in a chapter teaching “showing the way” as a communicational situation in 8 different highschool textbooks. To maximize the efficiency of teaching a specific grammar factor, we tried to establish which one should be linked to this communicational situation. Two conditions are necessary for this. Firstly, typical sentences for “showing the way” should be expressed by the grammar factor. Secondly, the grammar part associated with the expressions used for the communication situation should be more closely related to this one than any other communication situation. We concluded that the most efficient grammar factors that can be associated with the communication situation, “showing the way” are dative preposition and imperative, and that imperative can also be effectively associated with other communication situations such as “birthday and invitation”, and “health and treatment”.