Influence of teacher waittime and question level on eighth grade students science achievement and attitudes toward science in Saudi Arabia 2026-02-16T05:20:38+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - El Rashed, Ibraheem Mohammad, 1945 (Indiana University, 1984)