Alkhayrat, Afrah Mansour Hamoud. “The Extent to Which the Principles of the Constructivist Theory Were Included in Chemistry 1 Curriculum for the First-Grade Secondary in Saudi Arabia”. Journal of Curriculum and Teaching Methodology, vol. 1, no. 12, Sept. 2022, pp. 18-36, https://doi.org/10.26389/AJSRP.F250422.