[1]
Agizew, K.T., Ushachew, E.G., Hurisa, S.S. and Gizaw, D.T. 2018. Constraints of Students’ Mathematical Problem Solving and Proving Skill Competences, the Case of Four preparatory Schools in Guraghe Zone. International Journal of Sciences: Basic and Applied Research (IJSBAR). 40, 2 (Aug. 2018), 18–29.