parviz ansari rad

The present study was conducted with the aim of explaining the context-based approach in the sixth grade experimental sciences curriculum and in terms of applied purpose, it is descriptive in terms of data collection and survey in terms of type of research. The statistical population includes 750 sixth grade primary school teachers in Tehran. The sample size was determined by Krejcie-Morgan table, 256 people were determined by simple random sampling method. A standard questionnaire of 34 questions was used to collect data. The validity of the questionnaire was confirmed by experts with face validity and the reliability of the questionnaire was confirmed using Cronbach's alpha coefficient (0.86). The results showed that in the implementation of the sixth grade experimental science curriculum with context-based approach, the possibility of meaningful learning, gaining scientific competence, creating real opportunities for problem solving, creating the necessary ground for growth and development of scientific arguments and establishing communication between their four areas. Creator, creation and creation are provided, but the possibility of evaluation as a process is not provided for students and this approach has not involved students in group work.

Environmental education, as a lifelong process, an important part of which takes place in the school environment, has an undeniable role in improving environmental problems. Therefore, the present study was conducted with the aim of assessing the environmental education needs of second grade elementary students. The purpose of the research was applied and based on the data collection method was descriptive-survey. The statistical population included male students in the second grade of elementary school in the 16th district of Tehran. Statistical sample Using Krejcie and Morgan table, 154 people were selected by cluster sampling method. The measuring instrument was a standard questionnaire whose validity was confirmed by face validity and its reliability was confirmed by Cronbach's alpha coefficient. The results showed that students have a relatively good knowledge about the need to maintain vegetation, the dangers of improper waste disposal, the need to preserve animal species, the need to care for trees, the dangers of noise pollution; But their educational needs are about the scarcity of resources, the benefits of trees in reducing noise pollution, and the need for biodiversity, which they do not know enough about. 27.9% have not seen the recycling mark and do not have a good knowledge about recyclable materials. 76% do not see the ozone-friendly mark on the products and do not pay attention to its necessity. In general, the education system has been able to provide students with lessons on some environmental issues, and educational planners should consider measures in this regard.

The purpose of this study was to evaluate the quality of the curriculum of biology Education at Farhangian University. The method of data collection in this study is documentary and survey.The dimensions studied are research-oriented, problem-centered, classroom management, active teaching methods, evaluation skills, and the benefit of scientific discussions. The statistical population of the study consisted of all male and female student biology Education (input 2015), Farhangian University. The data collection tool was a questionnaire designed by the researchers and completed by the statistical community after confirming its validity and reliability. Data were analyzed using descriptive and inferential statistics by one-way t-test and SPSS software. The results showed that students' satisfaction with the quality of the curriculum was at a moderate level. But in terms of evaluation skills and classroom management, students were more satisfied with the other components. In the problem-oriented components and active teaching methods, the curriculum at the qualitative level was almost close to average and was somewhat unsatisfactory, and in terms of the research-oriented components and the use of scientific topics, it was somewhat unsatisfactory at the qualitative level. And from the perspective of student teachers, the curriculum of biology education at Farhangian University needs to be changed, refined, and revised.

The aim of the present study was to investigate the effect of teaching by lesson study method of teachers on increasing students' grades in biology topics of experimental sciences. The statistical sample of this study is 128 female students in the eighth grade of school who were divided into two groups of experiments (teaching by lesson study method) and control (teaching by traditional method). To achieve this goal, a research tool including a researcher's academic achievement test has been developed. The validity of the academic achievement test was confirmed by teachers and professors of educational sciences and experts in biology. And its reliability was calculated based on Cronbach's alpha and was performed as posttest on two groups of students. In this study, descriptive and inferential statistical methods were used to analyze the data using SPSS software. The results showed that teaching by lesson study of teachers increase students' grades in the biology topics of the experimental science course.

5E teaching method or structuralism is a theory derived from philosophical social movement of postmodernism in the 20th century. This method, is considered as the major five stages to conduct structuralism pattern consisting of engagement, exploration, explanation, extension, and evaluation. The aim of this research is to determine the difference resulted by 5E teaching method in 6 dimensions of cognitive domain (knowledge, understanding, application, analysis, combination and evaluation) of learning of biology lesson. The technique used in it is qwasi- experimental (independent, two- group (experimental and control) with post-test). The statistical universe of this research consists of all ten th grade boy high school students Khalkhal during 1395-96. In order to gather theoretical bases and the literature of this research, documental technique as well as other related studies were used while questionnaire technique (researcher-made written test) was employed to evaluate hypotheses. Regarding the abnormality of data, the non-parametric test of Mann-Whithney was uses and to analyze and evaluate the hypotheses the spss-21 statistical software was employed. The results showed, there is a meaningful difference between the control and experimental groups in this regard, by using 5E method. These results show the role and importance of employing 5E in teaching.

The purpose of this research is to uncover the effect of e- learning education with emphasis on the use of smart boards on motivation and academic achievement of the students in the Biology lesson and to compare it with lecture method. The method of this study is quasi-experimental (two-group design: experiment and control) and the statistical population of this study includes all boys who are studying in the tenth grade of empirical sciences of Secondary School in Borujen in the academic year 1395-1396. The documentary method was used to collect the theoretical foundations and literature, and to evaluate the hypotheses, a questionnaire (made written exam) was used to measure the educational achievement , Hartler's standard educational motivation questionnaire was used to measure academic motivation. To analyze and evaluate the hypotheses, statistical software spss21 was used. Regarding the normality of the data, a parametric test of the difference between two groups (independent T) was used. According to the findings, there is a significant difference between the students of the control and experiment group in educational motivation and achievement of Biology lesson . Th results show the role and importance of e-learning specially using smart boards in teaching.

The studied area is about 360 Km2. To study the clay minerals of Kordan's area the researcher chose samples from the surface of alluvial fan and the interpretation of XRD indicates the following

1-The clay minerals of area are mostly Cholorite and Illite. 2-The kind of area's Cholorite is sedimentary.Which is the result of erosion pyroclastics (TUFF). The origin of the mentioned cholorite is heredity. 3-In the downstream of Kordan basin due to the analysis of Cholorite, The amount of the Cholorite has been reduced and the amount of Illite has been increased. In such a way that in sample (B1) the amount of the cholorite was 60% and it reduced in sample (SM2) to 41/4% and the amount of Illite increased from 35% to 58/6%. 4- The amount of Montmorionite is little in Kordan. 5- In this basin the amount of Fe +2 and Mg +2 is most abundant and the amount of K+ ions is a little. And the climate is dry and semi-dry.