This practice insight describes a case study in which structured observation and questionnaires (for visitors and presenters) were combined to investigate a public science event during Brazilian National Science and Technology Week (NSTW) in 2019. A very large proportion of participants (68.6% of visitors and 25 of the 31 presenters) had been unaware of the NSTW. Among those visitors who showed initial engagement, more than half progressed towards more effective engagement behaviors. The relaxed atmosphere favored the public's participation. Activities in generic locations in less favored areas are relevant to reach out to a diverse audience. Further research is recommended for critical assessment of similar events.

This study aimed at analyzing Brazilian memes posted on Instagram about Covid-19, in which scientific concepts were intertwined with the message. The research was based on virtual ethnography and the analysis considered the multimodal structure of memes following principles of the Grammar of Visual Design. Only twelve memes out of a universe of 83 identified (14.5%) presented knowledge about science interdependently with meanings that could be produced. One of the core aspects is the complexity of both representations and scientific concepts in memes about Covid-19. Scientific aspects, humor and irony were associated with social and political criticism through different multimodal interactions.