Despite the enhanced popularity of flipped classroom research, there is a lack of empirical evidence reported about the different impacts revealed by the implementation of this concept. Therefore, to respond to this issue, this study aims to review and analyze the trends and contents of flipped classroom research based on 48 studies recently published in 2017 and 2018. The analysis was based on flipped classroom impacts from various fields.,A systematic literature review and content analysis were used as a methodology to investigate positive impacts and challenges of flipped classroom implementation.,The results of the analysis were interpreted using descriptive analysis. Analysis of the impact revealed that the flipped classroom yielded positive impacts on students’ learning activities such as academic performance, learning motivation and/or engagement, social interaction and self-directed learning skills. Meanwhile, the most significant challenges encountered by the instructors is a lack of students’ motivation to watch the pre-recorded video lectures or to study the contents outside of the class time.,Several issues in this discussion become implications that can be taken into consideration for future research. The findings suggest that the flipped classroom concept might be effective in promoting the twenty-first century learning skills.,While highlighting the limitations of an ineffective flipped classroom implementation, this study proposes further recommendations for future research.

中文翻译：

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对来自不同领域的课堂经验证据的系统回顾：差距和未来趋势是什么？

尽管翻转课堂研究的受欢迎程度有所提高，但仍缺乏有关实施该概念所产生的不同影响的经验证据。因此，针对这一问题，本研究旨在基于最近在2017年和2018年发布的48项研究，回顾和分析翻转课堂研究的趋势和内容。该分析基于各个领域的翻转课堂影响。审查和内容分析被用作调查翻转课堂实施的积极影响和挑战的方法。分析结果使用描述性分析进行解释。对影响的分析表明，翻转的教室对学生的学习活动（例如学习成绩，学习动机和/或参与度，社交互动和自我指导的学习技能。同时，教师面临的最大挑战是缺乏学生去观看预先录制的视频讲座或在课外学习内容的动力。本次讨论中的几个问题成为可以考虑的含义以便将来研究。研究结果表明，翻转教室的概念可能可以有效地促进二十一世纪的学习技能。尽管强调了翻转教室实施效率低下的局限性，但本研究为将来的研究提出了进一步的建议。讲师遇到的最重大挑战是学生缺乏在上课时间以外观看预录的视频讲座或学习内容的动力。本次讨论中的几个问题成为将来可以考虑的问题研究。研究结果表明，翻转教室的概念可能可以有效地促进二十一世纪的学习技能。尽管强调了翻转教室实施效率低下的局限性，但本研究为将来的研究提出了进一步的建议。讲师遇到的最重大挑战是学生缺乏在上课时间以外观看预录的视频讲座或学习内容的动力。本次讨论中的几个问题成为将来可以考虑的问题研究。研究结果表明，翻转教室的概念可能可以有效地促进二十一世纪的学习技能。尽管强调了翻转教室实施效率低下的局限性，但本研究为将来的研究提出了进一步的建议。