“…Although there are several reports on online laboratory classes for diverse scientific areas ( Banks and Kay, 2022 , Cormier and Voisard, 2018 , Divjak et al, 2022 , Hew and Lo, 2018 , Ji et al, 2022 , Litvinova et al, 2022 , Mshayisa and Basitere, 2021 , Salter and Gardner, 2016 ), information on the application of inverted classes to the teaching of Food Microbiology for undergraduate students is unknown. Here, we described the use of inverted classes in the laboratory teaching of Food Microbiology CUs taught to PSIMD and NSFD students of University of Porto during a semester comprising online and face-to-face classes due to on/off COVID-19 lockdown periods.…”