YAGER, Robert E. Are We Missing the Essence of the Visions Central to the U.S. National Science Education Standards (NSES)? . Journal of Turkish Science Education, [S. l.], v. 6, n. 1, p. 5–12, 2009. Disponível em: https://www.tused.org/index.php/tused/article/view/99.. Acesso em: 18 may. 2024.