Özlem Oktay, Serkan Ekinci, Ahmet İlhan Şen. Investigation of middle school students’ thoughts about a mobile planetarium activity. Elementary Education Online [Internet]. 2023 Dec. 20 [cited 2024 Jul. 22];19(2):695-717. Available from: https://ilkogretim-online.org/index.php/pub/article/view/6450