“…To date, no new opportunities have been identified to directly challenge the "Happy Hour" effect through other studies.Finally, we highlight Classes 2 and 3 that bring a study by a Brazilian research group, presenting discussions and theoretical proposals on the use of the EBI for teaching statistical content present in the Brazilian curriculum for the initial years of elementary school, with emphasis on the work de that generated the other four works published in national and international scientific events. In Class 3, we have texts 8, 9 and 10, 11 and 13 by Oliveira Júnior, Souza andBarbosa (2018), Oliveira Júnior (2019,Souza (2019), Oliveira Júnior et al…”