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The aim of the current study is to examine the effectiveness of brain-based learning for student direct and postponed retention in science. There were three groups in the study-one control group and two experimental groups. Brain-based learning was used in the first experimental group (mental group). In addition, technology was used in the second group as a platform to deliver brain-based learning. The control group used conventional teaching methods. There were 197 participants from grade eight. We administered a science achievement test to the three groups as a pre-test (before the beginning of the study), as a post-test (at the end of the study), and as a postponed test (six weeks after the study ended). The post-test results indicated that the technology experimental group outperformed the control group. However, the postponed test results also showed that there was no significant difference between the control group and the technology group. On the other hand, the mental experimental group performed significantly better than the other two groups on the postponed test. We suggest that the novelty effect might play a role in wavering the impact of the use of technology, however further research is needed.

Abstract. In this paper, we prove L p bounds for singular integrals with rough kernels associated to certain surfaces. Our results extend as well as improve previously obtained results.Mathematics subject classification (2010): 42B20, 42B15, 42B25.

Action research engages practitioners in rigorous cycles of planning, observation, action and reflection, which can lead to change in understandings and practice; so, they become reflective practitioners. Despite the importance of action research in informing classroom practice, the literature has shown that there are many challenges that hinder teachers from performing classroom research. This qualitative research study investigated Omani EFL teachers' experiences of participating in classroom action research and the challenges they face in doing research. Data were collected using semi-structured interviews with EFL teachers. 22 participants have been interviewed, out of whom were 18 English teachers and 4 Senior English teachers from 4 public schools in Oman. The findings revealed that some respondents participated in action research activities either as part of their pre-service teacher preparation programmes or through joining in-service action research courses after becoming practitioner teachers. However, they described their action research experience as difficult. The findings highlighted a number of challenges that hinder EFL teachers in Oman from doing action research such as, lack of knowledge, lack of time and lack of interest. The findings suggest that educational policy makers in Oman should create a research culture in schools, and provide incentives for teachers who participate in research activities. Moreover, there is a need to provide EFL teachers with the needed training on research so they become equipped with the knowledge and skills in doing research to improve the quality of teaching and learning in schools and create a community of teacher-researchers in Oman.