I haven't been a teacher, I don't know, but when I was in college, I reviewed all night before the final exam. It took me more than an hour to summarize a subject, which chapter has what key points, and then what typical exercises I did. Although I don't know the format of those key points, I can understand them, just so that I can read them easily with my mobile phone and tablet in class without turning over the books repeatedly, but I did it myself later. Although I said I summed it up and wrote it down bit by bit, how can a person's memory be so good? Summed up nearly two hours of things, emotions exploded in situ.
Information exchange or information recording should ensure that information is delivered to the place where it should be delivered. Teachers should first check whether there is anything wrong with the equipment when giving lectures. Teachers are in class when they surf the Internet in their own universities. First, ask the students if they have clearly heard my voice, and give me feedback if you have any questions, just to avoid this two-hour conversation. After that, the teacher spoke with great passion and found that the students didn't hear it at all. In fact, there is something wrong with the communication mechanism between teachers and students. If the teacher talks for a long time and the students can't hear clearly, they should take the initiative to contact the teacher through various channels, but the teacher has not received the news for a long time. Is it the problem of the students or the teacher? Nobody knows.
If you use all kinds of word recording software and video recording software on your computer or mobile phone, be sure to turn on the automatic saving software in Word. In the options, you can choose to set the time interval for automatic saving. Even if your computer is turned off due to some unexpected factors, or you accidentally click that button to close the file without saving it, you can still find the last version of the automatically saved file in the root directory. It may not be complete, but it won't be all. Most of them should have it.
We must be careful not to do that thankless thing. We record some information through the computer through the mobile phone, and it is not easy to type it word by word. Whether programmers write programs or individuals plan, design and summarize, we must remember that we should first look for automatic saving on that computer software and set it at a shorter time interval. Laptop computers may rarely die suddenly because of batteries, but desktop computers, especially broken computers in the company, are really possible.