The paper proposes an interactive student response portfolio (ISREP) system with iBeacon and web-socket technology, which supports flipped-classroom learning activities in traditional classrooms. The design of the ISREP system aims at promote interactions in classroom learning (CL). It offers APPs and web-interface functions for students and teachers, respectively. Students’ APP can scan iBeacon devices in classrooms and then automatically upload their identification information to the cloud space. Consequently, students’ presence in classroom can be recorded automatically. Moreover, teachers employ another function the system provides to promote high interaction in classroom via displaying questions on the front screen in classroom. Meanwhile, it simultaneously pushes (multicasts) these questions to students’ smartphones via web-socket technology. Subsequently, students send their responses for questions to the cloud space by the APP. During answering questions, the system presents temporary histograms of students’ responses and counting-down statuses of a timer on the screen in classroom. A timer can be synchronized with students’ APP by the web-socket technology. This way can promote students’ interaction and interest and then students enjoy in quiz-like activities. Teachers can quickly get results of students’ responses. A quasi-experiment was conducted in flipped-CL activities of a university class utilizing the system. Observing experimental results, it was found that students, who receive the instruction with the system, improved their interaction, learning interest, learning attitude, and learning satisfaction. Moreover, the proposed system helps teachers quickly obtain students’ learning situation in classroom and then may adjust their instructional approaches or contents.

中文翻译：

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具有iBeacon和网络套接字的交互式学生响应系统，可用于翻转课堂学习

本文提出了一种使用iBeacon和网络套接字技术的交互式学生响应档案袋（ISREP）系统，该系统支持传统教室中的翻转教室学习活动。ISREP系统的设计旨在促进课堂学习（CL）中的互动。它分别为学生和教师提供APP和Web界面功能。学生的APP可以扫描教室中的iBeacon设备，然后将其标识信息自动上传到云空间。因此，可以自动记录学生在教室中的存在。此外，教师采用系统提供的另一个功能，通过在教室的前屏幕上显示问题来促进教室中的高度互动。同时，它同时通过网络套接字技术将这些问题推送（多播）到学生的智能手机。随后，学生通过APP将他们对问题的答案发送到云空间。在回答问题时，系统会在教室的屏幕上显示学生的反应和计时器的倒计时状态的临时直方图。计时器可以通过网络套接字技术与学生的APP同步。这样可以促进学生的互动和兴趣，然后使学生享受类似测验的活动。教师可以迅速获得学生反应的结果。利用该系统在大学班级的翻转CL活动中进行了一次准实验。观察实验结果，发现接受该系统指导的学生改善了他们的互动，学习兴趣，学习态度和学习满意度。此外，