<< Objectives >>STEMSiL contributes to the inclusivity of STEM education, by aiming to support teachers, deaf students and Sign Language (SL) interpreters of primary and secondary education to improve their knowledge of STEM fields through the use of Sign Language. STEMSiL will develop a new approach on teaching STEM in deaf education through a tailor-made methodology, a visual STEM lexicon in Sign Language, while also guiding students, teachers and SL interpreters to co-create real-life STEM projects.<< Implementation >>The project activities will be research design activities including a study about STEM in deaf education, training of teachers and Sign Language interpreters on a tailor-made methodology, teaching methods and tools, development of an online platform and a visual STEM lexicon, co-creation labs and real-life STEM projects by deaf students, teachers and SL interpreters, campaigning videos developed by students and the implementation of multiplier events and a final conference.<< Results >>STEMSiL endeavors to create an inclusive environment for deaf students by providing the school community with a study about STEM in deaf education and a tailor-made methodology for teaching STEM to deaf students. An online platform with a visual STEM lexicon in six EU Sign Languages (DE, GR, ES, PT, FR, IT) will also be developed, together with a STEM co-creation guide that will enable the implementation of STEM co-creation labs and the delivery of STEM related projects.