平板电脑进入课堂使教学交互发生了变化：增加了人机交互，人机交互时间覆盖率较高。本研究使用基于FIAS分析方法和基于信息技术的互动分析系统ITIAS改编的《信息技术环境下课堂教学交互行为分类及操作性定义》对小学英语课例进行编码分析，得到各种交互类型的时间覆盖率和时间分布带，从而平板电脑在小学英语课堂中教学交互现状，并对课例视频中教师进行访谈，进一步了解平板电脑的应用效果。平板电脑引入小学英语课堂，课堂交互仍然以人际交互为主，人际交互中师生交互时间覆盖率较多，生生覆盖率较低；人与技术交互时间位居第二，其中以学生主动操纵技术和教师操纵技术为主，教师在教学设计的过程中，注重活动的设计，激发学生兴趣，鼓励学生操纵技术，参与活动。但是建议教师在设计活动过程中多加关注学生之间的交互。访谈结果表明，平板电脑引入课堂对教学目标的达成和重难点突破有很大帮助。本文通过对三个课例编码结果个案分析和对比分析得出结论，并提出建议。

The tablet PC into classroom has changed the instructional interaction: human-technology interaction appears; the time coverage of human-technology interaction is relatively high. In this study, the researcher codes and analyzes primary school English lessons according to The Classification and Operational Definition of Classroom Instructional Interaction behavior under the Information Technology Environment, which is adapted based on FIAS and ITIAS, the interactive analysis system of information technology, to get the time coverage and time distribution of different kinds of interaction and understand the current status of tablet PC in instructional interaction of primary English classroom. Moreover, in order to learn more about the application effect of the tablet PC, the teachers in the lessons are interviewed. The result shows that after the tablet PC into classroom, the main interaction in the classroom is still human-human interaction, among which the time coverage of teacher-student interaction is high and the time coverage of student-student interaction is low; the time coverage of human-technology, which mainly includes students’ initiative manipulation over technology and teachers’ manipulation over technology, is in the second place. While designing teaching procedures, teachers lay emphasis on designing activities, stimulating students’ interest, and encouraging students to control technology and take part in activities. However, teachers are suggested to pay more attention to the interaction between students while designing activities. The result of the interview shows that tablet PC into classroom helps in achieving teaching objectives and breaking through important points and difficult points. This study draws the conclusion and puts forward the suggestion after coding three lessons, implementing case analysis and carrying out contrastive analysis.