The purpose of this study was to investigate the effect of Word Study approach on the development of spelling performance of Grade Five female students in the Sultanate of Oman. The sample of the study consisted of 66 grade five female students from a Governmental Basic Education school in South Al Batinah Governorate. They were divided into two groups: an experimental group who studied spelling using Word Study approach and a control group who studied spelling using the traditional basal approach. The results showed a statistically significant difference between the two groups in favor of the experimental group. The study puts forward some recommendations for future research and for teaching.