HamzahAbed AL-Ubodi, A. and ., . 2018. A Proposed Model to Improve the Skills of Mathematical Thinking (C.A.S.M.E) and Its Impact on The Achievement of Students in the Fifth Grade in Solving the Mathematical Problems. International Journal of Engineering & Technology. 7, 4.36 (Dec. 2018), 696–699. DOI:https://doi.org/10.14419/ijet.v7i4.36.24225.