Introduction: Urban sprawl is one kind of urban expansion or its characteristics, which has a negative general view. Based on given definitions, the most important characteristics of urban sprawl can be thought as low-density, strip like, diffuse, non-continues and land use segregation expansion. However, density is the most common criteria of urban sprawl that is derive by the comparison of...

this experimental study has been conducted to test the effect of oral presentation on the development of l2 learners grammar. but this oral presentation is not merely a deductive instruction of grammatical points, in this presentation two hypotheses of krashen (input and low filter hypotheses), stevicks viewpoints on grammar explanation and correction and widdowsons opinion on limited use of l1...

This research is done based on Socio-cultural theory of Development and Collaborative learning role on Cognitive development of students in Mathematics, particularly on problem solving ability. Collaborative learning focuses on an approach of teaching in which uses the potential abilities and knowledge of students and is able to grow via intermental and intramental interactions. In this study, ...

In recent decades, research has growth Increasingly in Iran and, consequently, the country has risen dramatically in world rankings, based on the number of scientific documents. Meanwhile, research policy makers of different societies have concentrated, more and more, on "the effectiveness of researches" and today, their main concern is to ensure that researches are truly contributing to achiev...

Introduaction: Development of mushroom cultivation in Iran is considered and its production level is reached to Ninety tons per year. About five kg of waste is generated by producing one kilogram of button mushroom which can be refined by using vermicompost technology. This waste can be converted into valuable organic fertilizer and reduce the use of chemical fertilizers and reach to sustainabl...