The current study investigated the types of learning strategies used by Omani grade ten students when learning grammar. It also explored the differences between students of different proficiency levels in using grammar learning strategies. In order to gather data on ISSN 2162-6952 2017 www.macrothink.org/jse 152 students' grammar learning strategies, a frequency-based scale was designed and distributed to 170 students from Al Dhakeleya Governorate in Oman. The questionnaire consisted of thirty-eight items covering three types of grammar learning strategies, which were cognitive, metacognitive and socio-affective strategies. The present study revealed that grade ten Omani students used the three types of learning strategies to different extents. The study showed that Omani tenth graders used meta-cognitive strategies more frequently than cognitive and socio-affective strategies. The study also revealed that proficient students used more metacognitive strategies than less proficient students. The study makes a number of recommendations for future practice. Journal of Studies in Education

Background: Ovarian serous tumors are the most common epithelial tumors in premenopausal and postmenopausal, 60% of the most common cases are ovarian cystadenoma, 25% of low grade and highgrade serous carcinoma. Tumor infiltrating lymphocytes (TILs) is used to predict the prognosis some solid tumors. SRY (sex determining region Y)-box 2 (SOX2) is a transcription factor. High SOX2 in ovarian tumors associated with reduced disease-free survival. Research Objective: To determine the relationship between SOX2 expression and TILs in patients with a diagnosis of ovarian serous tumor at the Anatomic Pathology Laboratory, USU Medical Faculty and RSUP. H. Adam Malik Medan. Materials and Methods: 39 samples histopathological slides with a diagnosis of ovarian serous tumor, slide review was performed and TILs assessed and then SOX2 immunohistochemical staining and then analyzed for correlation between variables using Eta test (p<0.001) and Somer'sd test (p=0.120). Results:The highest expression of SOX2 high was in the highgrade serous carcinoma subtype in 9 (23.1%) cases. Most cases were also found in low SOX2 expression with low iTILs in 20 (51.3%) cases and low SOX2 expression with low sTILs in 16 (41.0%) cases. There was a significant relationship between subtypes and SOX2 expression (p < 0.001) and the Somers'd correlation showed no significant relationship between SOX2 and TILs (p = 0.120). Conclusion:In this study, there was a correlation between tumor subtypes and SOX2 expression and there was no correlation between SOX2 expression and TILs in ovarian serous tumors.