عنوان مقاله [English]
This study sought to design and validate a virtual social networks -based blended instruction with social constructivist approach in university instruction. To accomplish the objectives of the research, a mixed method research was used. In order to obtain the design of blended instruction, the deductive content analysis was performed in the qualitative section and a questionnaire survey method was applied to assess the experts judgments in the quantitative part of internal validation. After theoretical defining of each of the main concepts of the research, by referring to available scientific literature on the components of social-constructivism education, virtual social networks based instruction, and blended instruction, in the period 2000-2018, a total of 53 scientific texts were selected and studied by purposeful sampling. Based on the content analysis the following items were identified: the determination of instructional goals and content, the determination of instructional tools and media, the determination of instructional elements for implementation, the design of interaction and evaluation with elements of each of these components were identified. Finally, based on existing instructional design patterns, the design of virtual social network -based blended instruction was presented with a social constructivism approach. The results of internal validation indicated that the proposed instruction plan has a good and valid credit and has the effectiveness required for university instruction. .