In a research project on Information and Communication Technology usage in bilingual settings, pupils were observed by video recording while working with a bilingual PrimarWebQuest. The main research project focuses on the mathematical knowledge as well as linguistic aspects which pupils might acquire in CLIL-settings while using PrimarWebQuests. In this paper the pilot study is presented which focused on the interactions in such learning settings. It will be explained what Content and Language Integrated Learning (CLIL) means in a European context and to which components attention should be paid while planning the use of PrimarWebQuests in CLIL lessons. The fitting of CLIL and PrimarWebQuests will be described to outline the potentials of this approach. Its basic idea and its implementation in bilingual settings will be defined. Afterwards, the framework of the pilot study and first results will be described to conclude next steps of the main study.