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The study aims to investigate the effectiveness of using the Model Eliciting Activities (MEAs) on the ability to solve mathematical problems and self-efficacy among female students in eighth grade in the Sultanate of Oman. A quasi-experimental research design was used. The sample of the study consisted of 52 female students. It was divided equally into two groups: an experimental group and a control group. To achieve the objectives of the study, an instrument was developed to measure the students’ ability to solve mathematical problems with test consisting of 6 essay questions. In addition, a questionnaire of self-efficacy in solving mathematical problems was used consisting of 27 items. The results showed statistically significant differences at (α=.05) in both abilities to solve mathematical problems, self-efficacy in solving mathematical problems scale due to the teaching method, in favor of the experimental group. Considering these results, the study suggested several recommendations such as benefiting from the educational model based on (MEAs), in mathematics teaching. [ABSTRACT FROM AUTHOR]

The study aimed to investigate the effect of using PDEODE strategy on the eighth grade students’ achievement in science and their attitudes towards the strategy. To achieve the objectives of the study, a sample of eighth grade students was selected, consisting of 61 students distributed in two groups: an experimental of 31 female students who studied science using PDEODE strategy, and a control group of 30 female students who studied via the regular method. Two instruments were built; The first was an achievement test, which was applied on both groups before and after treatment, and the second was an attitude scale, which was applied on the experimental group after treatment. The results revealed that there is a statistically significant difference in the achievement of female students attributed to the teaching strategy on the test level as a whole, and at the level of knowledge fields (remembering, understanding, analyzing), for the benefit of the experimental group. There were, however, no differences between the two groups at the applying level. The results also indicated that the attitudes of students in the experimental group towards learning with PDEODE strategy were high and positive. [ABSTRACT FROM AUTHOR]