Laksmiwati P.A.Lavicza Z.Cahyono A.N.Alagic M.Mumcu F.2024-07-222024-07-22202402188791http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/11539Implementing STEAM education in classrooms can be enhanced by incorporating other methods to bring students flexibility during learning, such as the engineering design process (EDP) and hybrid learning. We developed design heuristics to support teachers in enhancing the quality of STEAM lessons, emphasizing EDP within hybrid learning to assist teachers in developing lesson plans. The design heuristics were implemented in three groups of online professional development programs within educational design research, with a hundred and eighty-three teachers submitting their lesson plans. We scored the lesson plans and conducted the Kruskal Wallis H test procedure. The result showed that teachers who participated in this study were likely to incorporate the key principles of design heuristics in their lesson planning practices. However, we found that there is a necessity for further exploration, especially in the variation of assessment strategies and the exploration of problems or context for STEAM learning. Therefore, the result emphasized the significance of future exploration that defines and formulates problems for STEAM activities and its implications on teachers’ lesson planning. This study harmonizes technological advancement and pedagogical practices within hybrid learning by integrating emerging technologies into lesson planning and evolving a design approach into the STEAM curriculum. © 2024 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.EnglishArticle10.1080/02188791.2024.2373226