In today’s society, teachers must train the best future professionals in educational institutions to facilitate the proper progress of our society. Some of these teachers educate individuals with intellectual or developmental disabilities, and promoting their employability requires providing them access to the so-called STEAM disciplines. However, teaching STEAM to students with disabilities is challenging and often hindered by a lack of resources, time, or training in the use of tools and methodologies. The ROBOSTEAMSEN, an Erasmus + European project, addresses this issue by educating teachers in the use of active learning methodologies and robotics to foster STEAM education. A key aspect of this project is the classification of methodological and technological resources that teachers can use. To this end, the project developed a taxonomy that allows the classification of resources to address various challenges associated with Intellectual and Developmental Disabilities (IDD). The taxonomy includes the characterization of different aspects such as possible disabilities and their levels, the student’s profile, their preferences, difficulties, learning objectives, and educational activities. This paper presents this taxonomy, discusses its various elements and demonstrates its implementation.