This special issue of U.Porto Journal of Engineering contains selected papers presented at the 1st International Conference on Science and Technology Education STE 2020, held at the Faculty of Engineering of the University of Porto (FEUP), Portugal, during 15-16 October 2020. The conference is co-chaired by António Ferreira (University of Porto, Portugal), Lucas F. M. da Silva (University of Porto, Portugal) and Claudio R. Brito (COPEC, Brazil). Its goal is to provide an international forum for the sharing, dissemination and discussion of research, experience and perspectives across a wide range of teaching and learning issues. About 50 papers were presented by researchers from nearly 20 countries.