Designing and creating new multidisciplinary educational practices is a complex process. In this process, teachers must take into account the subjects to be involved, the methodological objectives to be addressed, as well as the specific methodologies and objectives to be worked on and improved. This paper presents a summary of the Unit Plans created by different schools in four countries, where the previously mentioned aspects are specified in order to generate new practices in STEAM environments: the STEAM-Labs. These practices are designed with the aim of introducing a multidisciplinary approach to certain problems that students must solve by combining systems, technologies and methodologies in order to understand or improve any aspect of diversity that may affect the student, the school or the social environment in which they live. The results allow us to identify the most common approaches, as well as the most used systems, which allows for a more effective and efficient development of future Unit Plans.