Teacher education programs have the dual task of teaching specific subject content while also providing examples of how this content can be taught in schools. This task is especially important, and also problematic, when it comes to technology and science education, where hands-on components such as design/construction exercises, laboratory exercises, and excursions are central epistemic practices. When COVID-19 hit, Swedish universities were forced to change from campus-based teaching to online distance education, termed "emergency remote teaching (ERT)." The present study aims to investigate university teachers' experiences of how hands-on components in science and technology education worked in the ERT mode that arose during the COVID-19 pandemic. The analysis was performed with a social semiotics and community of inquiry framework, and shows that both the type of instruction and the subject content were impacted. In particular, the reduced opportunities for students to apply scientific and technical methods and the reduced ability of teachers to determine whether the students had understood their instruction generated new ways of communicating and supporting the students' learning. Therefore, analysis of meaning making in science and technology online-learning contexts needs to address the topics of the nature of science (NOS) and the nature of technology (NOT). An extended, three-dimensional model of meaning making is suggested.