The contribution's aim, among other things, is to share author's experience with the Integrated Science club, that enables integration of contents and aims from chemistry, biology, physics, geography, geology, from the perspective of a teacher who has studied 2 of 5 named subject areas, but also students' view of the Integrated Science club. What motivates students for entering the club that connects multiple subjects? Is this style of teaching manageable even though the teacher has studied only 2 from the 5 subject areas? How to prepare for this style of teaching? The contribution reacts not only to these questions.