books44 Chapter 265 Expert Song Goes Online
Chapter 265 Expert Song Goes Online
Teacher Song didn't refute it. It's a fact that there are differences between big cities and small cities in many aspects! Everyone says, "All roads lead to Rome," but some people's lives are already in Rome.
There's no such thing as fairness or unfairness. Instead of complaining, it's better to work hard step by step.
"Well, if junior high is hard, then high school is insanely hard. Physics and chemistry get harder as you go on. But don't underestimate yourself. Your foundation is still good. The main thing is to increase the difficulty of your studies, expand your knowledge, and be good at in-depth research."
Speaking of in-depth study, when encountering difficult problems, you can learn from the "rough estimation" method of physical chemist Lu Jiaxi: Each time you do exercises, first deduce the approximate range of the answer based on the question's meaning, and then solve the problem.
"This is possible? Experts have such unique abilities!"
"Of course you can. If the result is outside this range, then there's definitely a problem, and you'll need to carefully check your solution process. Especially for someone as careless as you who might misplace the decimal point." Song Tingnan was a little embarrassed; she had made the same mistake in the last exam.
"Don't think this is unscientific. Before starting a research project, Lu Jiaxi and his colleagues would roughly estimate a reasonable 'target model', thus eliminating obviously unreasonable options, avoiding many detours, and saving the country a lot of costs."
That seems to make sense; I'll definitely have to try it next time.
"Uncle, is there any other way?"
"Only by mastering the basics can you apply what you've learned to other situations. Now that you're in high school, you should have your own study methods. Doing practice problems is fine, but I don't agree with blindly doing them. Blindly doing problems before you understand the concepts is useless."
If you've been working on a problem for half an hour and still haven't solved it, don't waste your time. At this point, you should put aside your pride and ask classmates or teachers who know the answer. Bring your questions with you and listen to their problem-solving approaches. You might just suddenly understand.
After listening and feeling like you understand, it's not enough. You need to work through the problem yourself. After getting it right, you need to review your problem-solving process again, and then find similar problems to practice. This way, you'll avoid being all talk and no action, and you won't be stumped by similar problems in the future. This is what is meant by "What you learn from books is never enough; you must put it into practice to truly understand."
"Yes, Uncle, I understand. Anything else?" Ting Nan knew that what her uncle was talking about was her usual problem: stubbornly sticking to difficult problems and never reviewing what she had learned.
"There are too many knowledge points, some of which you haven't learned. What should you do? Then use the knowledge points you know to work backward. Start from the known result and think in reverse to deduce the corresponding conditions and process. This is a common method in problem-solving."
Song Tingnan nodded: "Yes, I've used this when I encounter difficult problems. It starts from the conclusion and works backward. In multiple-choice questions, you can eliminate incorrect options and find the correct answer by working backward. When solving multiple-choice questions involving specific numerical values, you can use backward reasoning to verify the correctness of the options."
"Yes, there are methods to learning chemistry. For the metals section, first memorize the electrochemical series table, which is to memorize the common metals by ordering them according to certain standards. This table actually tells you which metal is more reactive and can displace the metals following it from salts or other compounds. For example, iron is more reactive than copper. When you add iron to copper sulfate, the iron can displace the copper... For each metal you memorize, memorize its properties and those of its compounds, as well as how they are prepared. In this way, you will review all the relevant content about that metal."
This method actually creates a tree structure diagram of metal elements based on their reactivity and the properties of related metal compounds, encompassing all the properties of metal elements.
This tree-like structure diagram can be applied to every subject. Before starting, create a framework, then delve into its details, down to the branches and leaves. This will help you organize the knowledge points and give you a mental image.
"Yes, yes, thank you, Uncle!" Song Tingnan understood.
"For memorization exercises, read and memorize them an hour before bed, and then review them again immediately after waking up. This will help you memorize faster. Listen, another very important point is that you should focus your main attention on your studies and concentrate on them."
"A person's energy is limited. You should trust us adults to handle things at home and in the business world. Don't think things will go wrong without you. We're not pushovers; you can trust us, right?" Song Yanchu solemnly reminded Ting Nan.
This child has always been a worrier and a worrywart. Perhaps influenced by her childhood experiences, she has a tendency toward what is known in psychology as a "people-pleasing personality." She is very concerned about the emotions of those around her. She may seem carefree, but she is actually very sensitive and habitually takes the blame for others.