Thamer, A. H., and H. J. Abdullah. “The Effectiveness of the Swartz’s Model in Achievement and Generative Thinking Skills for First Intermediate Students in Teaching Mathematics”. Journal of Tikrit University for Humanities, vol. 28, no. 3, 3, Mar. 2021, pp. 324-39, doi:10.25130/jtuh.28.3.3.2021.18.