AHMED AMMAR JAWAD; ALAAAHMEDABDELWAHID        . Evaluating the science book for the sixth grade according to NGSS standards for the next generation. Zanco Journal of Human Sciences , [S. l.], v. 24, n. s5, p. 439–452, 2020. DOI: 10.21271/zjhs.24.s5.31. Disponível em: https://zancojournal.su.edu.krd/index.php/JAHS/article/view/3336. Acesso em: 2 may. 2026.