At 8:30 in the morning on February 27, I opened the surface and logged in to the Air School of Tsinghua High School。The first task was to enter my self-created course and correct yesterday's homework. Most of the students' homework had been submitted and corrected yesterday, but there were still some students who continued the school's habit of submitting homework in the morning.If there are still people who forget to hand in, I will open the @ mode in the class wechat group。The second task is to review today's courseware, do the homework again, and then correct the homework that has been handed in today, giving feedback in as much detail as possible。

Every morning when I log in to the Air School, I also log in to the website wechat, enterprise wechat and qq on the computer side。Wechat web version can ensure that I can see the students' information in time, the peak of Internet use is in the morning, some students are very difficult to watch videos, will ask me for help through wechat。As the head teacher, I downloaded the information of the day from the cloud disk of the air school and sent it to the class group of the enterprise wechat。The upper limit of enterprise wechat file transmission is 100MB, which is much larger than the upper limit of web page wechat 20MB. If the data is too large, there are qq groups to spare. Therefore, students joked that we are "crafty rabbit six caves".。Of course, some students started math class early. At 7:33 this morning, some students were asking me questions. I could answer some questions through wechat text input and voice, while others needed to use qq screen sharing to write and talk on the OneNote page with the surface stylus。

Around 11:00, the busy morning came to an end。

At 12:20, I began to sort out the common problems of yesterday's homework, the background and extension of the topic, and prepare for the "Math online" at 13:00 at noon。"Math online" about 50 students, the online platform is Tencent conference, it can accommodate multiple participants, screen sharing is also very stable。

Around 13:40, the group explanation and individual question-and-answer ended。Usually I will rest for half an hour, exercise for an hour, and then I have to deal with the class, grade, and lesson preparation team。For example, yesterday afternoon was the regular meeting of our senior two math group every Wednesday, summarizing the gains and losses of this week, discussing and preparing lessons for next week。

Secretary Fang said that in this extraordinary period, the teacher's work and emotional attitude will always be remembered by the students, and I particularly agree with it。Therefore, my website wechat is always allowed to send notifications, as long as you see the information of students, will be the first time to reply, I want to let them know, although they are at home, although across the computer screen, as long as they need, I am always there。So, with a daily midday online question-and-answer session, I firmly believe that the emotional stimulation delivered by online real-time interaction is unmatched by a mechanized taped course。

19:30-21:00 in the evening, quietly polish the course and do topic selection。

21:00-22:30 is the peak of students' problems, homework can not understand, review video content stuck, independent improvement difficulties, etc., this period of time can only be used to correct homework。

After 23:00, in the quiet of night, there is no noise, and finally you can record lessons (write), at this time, wechat circle of friends will see a lot of colleagues who are also struggling to cheer each other up。It takes about three late nights to record a class, both because there is a mistake in the recording process and you have to start all over again, and because you have to get the class preparation team to discuss and process it。

Use live broadcast to answer questions for students

I chose to write these words today because exactly one month ago I received a notice that "classes will not be suspended"。

January 27: The Mathematics teaching and research group received a notice that the semester originally scheduled for February 17 would be postponed, and online teaching would be used for review。

January 28: Under the organization of teacher Zhou Jun, our lesson preparation group held the first network meeting on wechat platform, decided to review derivatives in the form of recording and broadcasting, and completed the recording of 10 lessons for two weeks before February 10。Li Jinsong and I prepared the first, fourth and seventh lectures together, and I was responsible for recording the lessons。Because the three teachers responsible for recording the course are graduates of northern Qing, teacher Li Jinsong said: to start the first gun, live up to the background color of northern Qing。I was deeply touched, not only because I graduated from Tsinghua, but also because I thought of the High School attached to Tsinghua University, and in the beginning stage of the new century of the High School, we encountered this tough battle。This is a challenge to the inherent teaching experience, is to hone and improve their own teaching strength, but also urge us to explore and innovate the future teaching mode。

January 29 ---- February 1: "If you want to do a good job, you must first sharpen your tools", which platform to record and broadcast is the first thing I have to decide。At that time, I was abroad, unable to prepare courseware and other materials, and could only think repeatedly about the tried intelligent learning network, air school and other operating processes。

February 2nd ---- February 3rd: Try out the Intelligent learning net with a few students in the class, try various ways to use it, sort out the use process and operation suggestions。

Feb 4 ---- Feb 5: First audition, video using PPT animation and geometry artboard。During the discussion in the group, Principal Xu Wenbing repeatedly emphasized that students' viewing feelings should be fully considered, and students' thinking should not be stopped while the class was explained clearly。Using only PPT to play, even with a lot of animation effects, there will still be a feeling of "watching movies", and the best teaching method for derivative questions is handwritten books, which is naturally in line with students' thinking habits。Therefore, I used surface to cooperate with handwritten notes, and PPT was combined with OneNote blackboard writing and geometric drawing board animation demonstration。On the second trial, the feedback from the students was very good。

February 6: wechat voice meeting, training in the lesson preparation group on the use of wisdom learning network。

February 7: wechat voice meeting, training teachers of other subjects in grade group on how to use the website, and making a guide for teachers to use the website。

February 8 ---- February 11: The first two weeks of course recording was completed, and the user guide for the student side of the Intelligent Learning network was made。

February 12: A large number of network platforms crashed, and the Intelligent learning network announced that it could only open the student side in the afternoon, which conflicted with our design scheme and could not be used。

February 13: The recording and broadcasting platform was finally changed to the Air School of Tsinghua High School. Considering the large number of students, network congestion may occur on the first day of concentrated use. We contacted Li Jinsong, the grade leader, and Sun Shuming, the director of the network Center, to set up class groups in the senior two section on the enterprise wechat platform as a backup way。

February 14: Make a guide for the use of the student side of the air school for the class teacher to issue students。

February 17 - present: The Air School is officially opened。In the process of using the air school, I actively communicated with the teacher in charge, Zhang Jiayu, and provided suggestions for improvement。

On a normal day, sometimes we make fun of the three questions of life that strike at the soul。Staying at home, although busy with work, has the time and space to meditate alone。Who？"Teachers, so preach, teach and dispel doubts."。Where?I am Tsinghua, born in China!How? Willing to give all, in order to live up to!

We are full of enthusiasm for education and teaching, in the perseverance to grow, explore, innovation, and will eventually with a wish to live up to the trust of a calm and go!Do not forget the original heart, Fang always, pay tribute to all the colleagues who adhere to the ideal!

Senior 18 math teacher Yang Jin