摘要：Scientific dissemination plays an important role in spreading scientific and technological information, provoking curiosity, dialogue and interaction. This article aims to analyze the reach and strategies used in 2019 National Week of Science and Technology (2019 SNCT), presented in the II Luso-Brazilian Seminar on Scientific Dissemination: actions in the National Week of Science and Technology, held from 3 to 7 August 2020 on YouTube channel Ciências Sob Tendas. It also aims to discuss the expectations for the upcoming online SCNT. As methodology, data were collected from the speaker’s presentation at the event which are representatives from several science centers, museums and others research institutions in Brazil and Portugal. We used Fontoura theme methodology (2011) in data collection and analysis. Therefore, we follow the steps in this analysis model: 1) careful observation of the entire event; 2) selection of the main focus of the speeches; 3) delimitation of what was relevant; 4) creation of similar groups; 5) gathering the groups in units of meaning; 6) data tabulation; 7) data interpretation. With this, we highlight the types of activities carried out in 2019 SNCT, research areas contemplated in the activities, actions or strategies to reach the population and the national reach. We conclude that the strategies, developed by museums and science centers, were diversified and adapted to the realities of each location, providing people’s training within the specificities of each group. The reach obtained was significant, mainly because they did not stick to the week dedicated to the event, but acted throughout 2019 as well as carried out itinerant actions, prioritizing to reach cities distant from large urban centers. Concerning the COVID-19 pandemic schools, museums and others scientific dissemination places are facing several challenges with online education which had them expand their communication with the public. For that reason, the seminar also provided opportunities for dialogue and the development of strategies for this moment.
