Alkhayri MH. The impact of the use of the obstetric learning model in the teaching of science in the development of scientific concepts and critical thinking among middle third graders in Mecca schools. JCTM [Internet]. 2022 Sep. 28 [cited 2025 Dec. 20];1(11):65-96. Available from: https://ajsrp.ojsexpert.com/index.php/jctm/article/view/5628