ARYA, Anand Kumar; PAL, Narendra. Periodic Table as a Constructivist Model of Teaching-learning at the Secondary Level. SCHOOL SCIENCE, [S. l.], v. 55, n. 2-3, p. p.88–92, 2017. Disponível em: https://ejournals.ncert.gov.in/index.php/SS/article/view/2527. Acesso em: 1 jan. 2026.