The Internet of Things is another revolutionary development of the information industry after computers, the Internet and mobile communications. It is currently officially listed as one of the strategic emerging industries that the country focuses on developing. In recent years, the Internet of Things major has been opened in many universities across the country. However, as an emerging major, it has its own unique characteristics, such as a wide range of knowledge. For its professional course teaching, especially core courses such as Wireless Sensor Networks (WSN), it is even more necessary to reform and innovate in teaching methods and teaching ideas.
The Internet of Things major is offered in many universities across the country. The training programs and curriculum systems may vary, but wireless sensor networks are generally set as core courses or compulsory courses. Wireless sensor networks are a course with strong theoretical and practical content. It is highly interdisciplinary and covers a wide range of knowledge points. It has high requirements for teachers in classroom teaching, and students need to master more and more complex content.
Students majoring in the Internet of Things need to have a broad range of knowledge and deep professional skills. The content learned in class is limited, and students need to have a wide range of knowledge, but they are often confused and don’t know where to start and what to learn. "Pre-class knowledge exploration" is to establish a teacher-guided knowledge learning process. In this process, the teacher extracts the premise content of the next class teaching, that is, the content that students need to know in advance, and let the students explore. Students explore independently with their existing knowledge, life experience and learning methods, thereby stimulating their interest in learning and enhancing their confidence in learning the course well. Finally, a summary report is made in various forms, such as a scientific review, a PPT classroom report, etc. This kind of preview is no longer a learning activity simply for mastering knowledge and skills, but for the cultivation and improvement of students' comprehensive quality.
The main process is as follows: teachers assign tasks, mostly in the form of "themes"; students think independently based on existing knowledge; students obtain more comprehensive information through online resource libraries such as Zhihu, Encyclopedia, Wenku, and Technical Forum; form a report document and present it in the form of a PPT script; and give a 10-minute lecture in class.
For example, before learning "Sensor Network Data Fusion Technology", let students summarize and organize the concept of "data fusion", its development history, working principle and application in advance, and reserve 10 minutes for students to demonstrate and explain through PPT in the next class. Pre-class knowledge exploration fully mobilizes students' ability to learn independently, and also exercises their analysis, summary ability and basic scientific literacy. The knowledge acquired by students through this exploration method is more solid and profound than that acquired by teachers' direct classroom lectures.
