Review in the third year of high school, how to improve grades in mathematics and chemistry, and wha

1. Step by step.

Mathematics is an interlocking subject, and any disconnection will affect the entire learning process. Therefore, you should not be greedy for learning at ordinary times, you should pass chapter by chapter, and don't easily leave questions that you don't understand or don't understand deeply.

2. Emphasize understanding.

Concepts, theorems, and formulas should be memorized on the basis of understanding. Every time you learn a new theorem, try to do an example problem without looking at the answer to see if you can apply the new theorem correctly; If not, compare the answers to deepen your understanding of the theorem.

3. Basic training.

Learning mathematics is indispensable for training, usually do more exercises of moderate difficulty, of course, do not fall into the misunderstanding of dead drill problems, to be familiar with the types of questions in the college entrance examination, training to be targeted.

4. Pay attention to the mistakes that occur in the usual exams.

Make a mistake book and collect your mistakes, these are often your weaknesses. When revising, this notebook becomes a valuable review material. There is a step-by-step process in the study of mathematics, and it is unrealistic to dream of reaching the sky in one step.

After memorizing the content of the book, the exercises behind the book are carefully written, some students may think that the exercises behind the book are too simple to do, this idea is extremely undesirable, the role of the exercises after the book not only helps you memorize the content of the book, but also assists you to standardize the writing format, so that your own solution structure is tight and rigorous, and the formula theorem can be used appropriately, so as to reduce the unnecessary loss of points in the exam.

First of all, we must devour the textbooks thoroughly, don't blindly do the questions, and get the extracurricular books.

You may not believe it, but books are the best review materials, and I guarantee that you have passed 125 in math by doing all the example problems in math textbooks

Do the questions in a down-to-earth manner and think more.

Optimize the design and past questions, don't use mock questions, it's too fake, it's useless.

The questions in the high school exam are not difficult, mainly problem-solving thinking. The question sea tactic is very effective.

Practice various types of questions every day, and write down any mistakes you encounter.

Too much information is a bigger burden! If you get through the teaching materials, there will be a network of knowledge, and you will be able to understand it!

The best way to improve your grades is to do more and practice more, as the saying goes, practice makes perfect.

The main thing is to summarize when studying, which is very important.

Study the textbook first, the information is not important.

Let's take a walk around the library first.

How to learn chemistry in the second year of high school to improve your grades is as follows:

1) Pre-class preparation is indispensable. The so-called preview is to understand the general content and difficulty of the textbook. Pay attention to the general idea of the textbook when previewing:

What is the main substance in this section? What is the relationship between substances (e.g., physical properties, chemical reactions)?What is the basis of the key substance?

These are all pre-study that must have a certain impression.

If you encounter difficulties in the preparation and you can't solve them for a while, you should collect them and record them in a notebook to enhance the pertinence of the lecture. In addition, you can also solve these problems through the corresponding reference study books, so as to improve your self-learning ability and learn more knowledge for the preview.

2) Listen to lectures skillfully and think actively. In class, I mainly listen to the teacher's lectures, and basically follow the teacher's ideas. At the same time, we should strive to eliminate the positive use of our brains and take the initiative to think, and strive to get the best comprehensive benefits of "acceptance-thinking-understanding".

Grasp the basic concepts and grasp the main spirit. Teachers should have different "tightness" in their lectures, and students should also have different "bridge closure responses" when they listen to lectures. If you understand something in the preview, you don't have to talk too much.

For difficult points, you should listen carefully, and you can make reasonable "associations" and moderate stays during the lecture.

3) Consolidate classroom outcomes. At the end of each class, don't rush to let go of your mind all at once, but take a few minutes to quietly think about the basic content of the lesson: the main point. This may take a few minutes, but the effect cannot be underestimated.

1. The right way to learn. If you want to improve your chemistry score, you need to have the right way to study. Although chemistry is a science subject, there are many things that need to be memorized, such as:

Chemical equations, periodic table, and much more. Therefore, when senior high school students learn chemistry, they can't rely on doing all the questions, but also take time to memorize.

2. Good study habits. This is not only for the subject of chemistry, but also for studying other subjects in the third year of high school. A good study habit is the premise for you to improve your chemistry score.

Senior high school students can preview and understand the content that the teacher is going to talk about before class, prepare all the things to be used during class, and then tidy up the paper cleanly, which is conducive to concentration.

In chemistry, chemical reactions are very important, so if the first step to improve chemistry scores is to memorize chemical reactions, not only to remember, but also to understand, because in junior high school, chemistry only needs to remember chemical reactions, but high school should deepen your understanding on the basis of memory, if you are a chemistry equation hard memorized, then when the exam is written, you are likely to not answer, high school chemistry exam is not like a junior high school chemistry exam, sometimes there will be the original question, so when memorizing chemical equations, You have to learn to think.

There are many special elements in chemistry, and these special elements have the highest test rate, so we must remember these, because these are also our test points in the college entrance examination syllabus. The teacher's teaching is also focused on teaching from the chemistry test center.

There may be times when many reactions and principles in chemistry need to be inferred by ourselves, so after the teacher finishes the lecture, we must learn to judge and try to reason some principles by ourselves.

Regarding the review of chemistry in the third year of high school, the teachers of Chengdu Meibo shared with the students four tips for improving their chemistry test scores for students' reference.

1. First of all, it is clear that any chemical reaction should be considered from the perspective of the periodic table.

The reaction principle of chemistry is the question of whether the outermost electron shell is "saturated", and the valency of the state of matter is basically in line with the law of the periodic table, and only a few polyvalency are to be copied and remembered. Make a notebook specializing in chemistry and keep a "non-conventional" record, including all reactions of special colors, gases, precipitations, valences, etc.

By reviewing the reaction equations (the equations that appear in the textbook chapters step by step) and thinking against the periodic table, you can draw conclusions. You will find that with reference to the distribution law of the outermost electron shell and the order of the elements of the same main group, all the redox and hydrolysis ionization, you who were originally unable to figure out the concept, now in front of you, the gods and horses are floating clouds, everything has become clear and clear, you will find that a small periodic table is very helpful for you to learn chemistry!

2. Secondly, the key records and special elements must be kept in mind to distinguish them.

Shenma is a special element, that is, an element that can produce special gases, precipitation, and colors by reaction, as well as valence elements, combination elements (acid roots), etc., which are the test points and starting points for solving problems in chemistry in the college entrance examination. In this blog, there is a complete set of starting points for inductive chemistry problem solving, which is full of special reactions and easy-to-mix knowledge points. I hope that everyone will summarize it for themselves, and not think that with this content, you can sit back and relax.

3. Judgment and derivation should be learned.

Inorganic chemistry focuses on judgment, judging the reaction mechanism, reaction principles, such as whether the valency is equal, whether it can participate in the reaction, and how to balance, all of which are judged and deduced based on the laws of the periodic table. The judgment of organic chemistry is first the judgment of functional groups, and then the derivation of carbon chains. Grasp the reaction characteristics of functional groups, and then according to the distribution law of carbon chain (4 key positions), you can thoroughly understand the knowledge points and win the problem.

4. Compass review method.

What is the compass review method is based on a center, and then constantly expand the circle to the outside. The center of inorganic chemistry is the valency, and the center of organic chemistry is the functional group.

In inorganic, whether it is redox or hydrolysis ionization, it is the process of valency migration, so the whole central point valency is formed. The law of valency comes from the periodic table, so to learn the inorganic part, we must take valency as the center, adhere to the periodic table, and adhere to special phenomena.

In organic, with the functional group as the main axis, it is necessary to distinguish the characteristics of the functional group, the formation rules of organic compounds (mainly the carbon chain and benzene ring rules), and all organic reactions and test points revolve around this formation rule and functional group characteristics.