SIGN2Inclusion seeks to facilitate DHH secondary students’ (15-18 y/o) democratic participation and inclusion by creating a Multimodal Sign Language (SL) Lexicon on Environment and Emerging Technologies concepts to retain STEM’s central focus in DHH education and facilitate knowledge development, mobility, and exchange in those areas. This way, SL neologisms are to be generated and diffused in wider DHH communities, ti enhance current and future students’ STEM career prospects.