M NAEL, M. The effects of the emotion happy as induced by colors on the performance of grade 1 pupils in addition. Southeast Asia Early Childhood Journal, [S. l.], v. 8, n. 2, p. 1–15, 2019. DOI: 10.37134/saecj.vol8.no2.1.2019. Disponível em: https://ejournal.upsi.edu.my/index.php/SAECJ/article/view/3151. Acesso em: 25 apr. 2024.