Help!!!! Request!!!! How to learn science.

Choose a reference book that suits you according to your actual situation.

Then you have to preview before class, otherwise, just listening to what the teacher is talking about in class, you can't understand it at all, and there is that you must memorize what you should memorize.

The important thing is to learn the things in this textbook solidly, since the science results are average, first of all, the concept is not clear, and I will not use it (clear concept: not only to memorize it, but also to deeply understand its meaning, and to use it flexibly. The second is to do a lot of questions (after all, science is a new course, how can it have too much information, and if you do everything issued by the school and bought by yourself, the exam will be about the same).

Finally, I suggest that you establish a book of wrong questions (science can generally be learned like this), record the questions you usually make wrong and the good questions in the reference book one by one, before the exam, go through the book well, take a good look at this book, and the exam must be no problem (this study method has worked, my two classmates use this method to score 96 points, one 99 points, and the second in junior high school)!

I think buying physics · · Chemistry · · Three tutorial books for biology.

Because knowledge is unchanging, it should be learned separately

Although my learning is also average. Ashamed.

Do the questions, do the questions, and do the questions.

Listen carefully to what the teacher says in class.

After a certain level of deepening difficulty increases a little.

Actually, the science is very simple.

Ask the teacher more questions, and if you don't understand, ask in time.

In this way, the average speed = distance time, let the total distance be 2, then the half time is 1, the first half time is t1 = 1 25, the total time is t = 2 50 = 1 25, then the second half of your remaining time is only 0, so you must instantly come to a space crossing, otherwise, you will definitely be caught up by the enemy behind you, and then ooxx, and then xxooMay Brother Chun, Brother Zeng, Brother Sharp, come to your rescue, Amen!

In the remaining half of the journey, you should advance at speed x,,, and walk for t hours,,, and then set the first half of the journey for t1 hour, so that x*t=s 225*t1=s 2

If the average velocity is 50, s 50 = t + t1 can be solved to obtain the time x....

(2) To facilitate the comparison of the size of the object and the image.

1) Convex lens.

Analysis: In order to make the real image appear on the light screen, the center of the candle flame, the convex lens, and the light screen is required to be at the same height, and the position of the convex lens in the figure is obviously a little low.

2) Right to zoom in.

In the figure, the current object distance range is U 2F, and the image distance range is 2F V F, which is a real image with inverted reduction. When the candle moves a short distance to the right, it means that the object distance decreases but is still greater than the focal length, so the image distance increases and the image also increases. So the light screen should be moved to the right.

3) No, you can't. The real image can also be directly observed, but the position of the eyes is behind the real image, and secondary imaging is involved here. Because the lens in the eye is also a convex lens, the imaging principle is the same as that of a camera, that is, the object to be observed can be viewed in an inverted and shrunken real image on the retina (equivalent to a light screen) outside of 2 times the focal length. Therefore, when the eye observes the real image of the candle flame, the real image of the candle flame is equivalent to the "object" to the eye, so the eye has to observe the "object", and the eye has to be behind the "object".

Handsome guy, it's okay to take a **, this one can't be seen clearly.

When I was in my second year of junior high school, geography and politics were not ideal, always hovering around 80 points, and then I changed teachers, and found that as long as I worked hard to memorize and understand memory, it was not difficult to get a high score.

Politics, the problem of many students is that they can memorize knowledge points but can't apply them, I don't know if you're like this? You can do a few questions, and then analyze why you are different from the answer according to the answer, and think about the way to do this type of question, and after a long time, the sense of the question will be cultivated.

Geography is important to be able to look at the map. My method is to find a new notebook and draw the more important maps by myself, so that the impression will be more profound than just looking at it. One aspect is to learn to analyze, which can be combined with local topography, climate, resources, etc.

In short, if you want to progress, the most important thing is to be diligent.

Motivate yourself with people you hate.

When studying politics, you must first read the texts by yourself, know what the content of this box is about, sort out the internal connections between the knowledge points, and listen carefully to the teacher's explanations during class. When understanding knowledge, it is best to connect it with the reality of your own life, and put yourself in real life to apply what you have learned. In this way, you will start when you answer the questions.

Let's learn the Feynman Method!

What is the best way to learn?

Set yourself a schedule for when to read and when to play.

1.You have to read well, especially politics. Although it is an open-book exam, you still have to memorize it.

2.Biology class is to take good notes and read them carefully after class. Before the exam, memorize your notes carefully.

3.Geography must be taken seriously in class, otherwise you won't know what the teacher is talking about after class. Finally, be sure to do more questions to increase your knowledge.

A China leaks and is at the intersection of the world's two major **belts - the Pacific Rim** belt and the Eurasian ** belt, and is very developed by the Pacific plate, the Indian plate chain and the Philippine Sea plate.