writing is much more serious and orderly than before, and it has made great progress.
New Process On the first day,
started a new process. Yesterday, a physical test was completed. Today, I corrected according to the process. The method was to analyze Xiaomao’s paper first, find out his possible reasons for his mistakes, and put forward opinions on how to achieve a score of more than 95 points (not show it to him). Then, after he returns home, correct it himself and write down his ideas. Then compare and discuss with my opinions and unify the improvement plan.
Because it is estimated that it will be 12 o'clock when he has finished correcting the analysis. The specific comparison analysis will be posted tomorrow. This time I will only write down my thoughts.
Overview:
The whole volume is medium difficulty, took 60 minutes, and scored 77. Although the handwriting is average, it is much cleaner than before, and it deserves praise.
has changed physics so many times, whether the choice and experimental questions are correct or the first time, is it a good phenomenon.
is just that the total score in the end has not reached 80. It’s a pity that I feel that there is something wrong with the time allocation, so I counted it:
multiple-choice questions 10 questions, all right, and it took 9 minutes and 40 seconds in total.
Question 11 experiment, all correct, took 10 minutes.
Question 12 deducted 4 points, which took 5 minutes.
Question 13 deducted 1 point, which took 15 minutes.
Question 14 deducted 5 points, which took 5 minutes.
Question 15 deducted 13 points, which took 15 minutes. The time to choose
10 is not as good as a big question. Based on this as a standard, we can think that all questions that exceed 10 minutes are problematic, that is, the main problem lies in questions 13 and 15 (timeout), and the time to choose 14 may be more than 5 minutes. The second question was written on the back, but it was still wrong in the end. Question 12 is probably a careless mistake.
So I guess the 13 questions disrupted the rhythm and took too much time, which led to a bit messy last two questions. Let’s conduct a specific analysis below.
error cause:
1, 12 questions, 4 points will be deducted.
first 2 questions, and you can review the questions carefully. When asked about the height, add the third section. The first section is 0.5*1.2*4*4=9.6 meters, the speed is 4.8, the second section is 4.8*11 seconds = 52.8 meters, and the third section is 4.8*6-0.5*0.8*6*6=14.4 meters, and together = 76.8 meters.
Xiaomao uses the average speed * time method (the speed starts at 0 and the ends at 0, but it can be used). , but the first time should not be 6-2, you write 6+2..., so there are no 4 points (the previous time was 80/8 and it is equal to 8, and there is another time when I calculate the root number of ).
I don’t understand that he always makes some mistakes that ordinary people cannot do. Elementary school students don’t have this, right? Can anyone tell me how to improve this?
(When it comes to elementary school students, I remembered that Xiao Mao went to an elementary school for an interview when he was young. The teacher asked him how much 9+6 is equal, and he said it was equal to 16. Later, the primary school did not notify us to report... It was so cute. Perhaps, we should accept the mediocrity of children)
Wrong cause: Habit: low probability brain disorder , improvement method: None. The issue of concentration depends on luck.
2, 13 questions, deduct 1 point because the reason is that the less is equal.
total internal reflection, also known as total reflection (total internal reflection, TIR), is an optical phenomenon. When light enters the medium with a higher refractive index into the medium with a lower refractive index, if the incident angle is greater than a certain critical angle θc (the light is far from the normal), the refractive light will disappear and all incident light will be reflected without entering the medium with a low refractive index.
is a very interesting phenomenon and is also the reason why physics is fascinating.
error cause: Knowledge or habit , either missed writing, or total reflection can occur when the boundary is not sure, it depends on what he says. Improvement method: Strengthen logical thinking depth , and truly understand whether the result is true when all boundaries (that is, when equal to it).
This question timed out at least 5 minutes, which is also the reason why the subsequent two questions were wrong.
3, 14 questions, 5 points are deducted, the third question is wrong.
The third time it passes through the X-axis, first comes out from (3d, 0), passes through the electric field (accelerates t seconds), reaches the lower magnetic field and makes circular motions, then enters the electric field (continue to accelerate t seconds), and then passes through the X-axis for the third time. So the coordinates are 3d+3d(electric field)+2d(magnetic field)+5d(electric field)=13d, Xiaomao calculated the distance 2d in the magnetic field. The second 3d did not write the process, and the third paragraph of the process in the electric field was missed. I guess he did not draw the drawing on the draft.
continues to estimate that he writes 5 minutes to refer to the first two questions. He didn’t write the third question at the beginning, so he wrote 15 questions first, and then came back to make up for it. The time was too tight.
error cause: time, skills, not drawing pictures (estimated)
4, 15 questions, deduct 13 points.
The second question is calculated incorrectly. If the equation is correct, the solution is x should = 0.5, so the answer is 25-2*2=21J
The third question is because the second question is 23J
, the fourth question is not enough time.
This is the case first, and wait for his correction tomorrow and then compare
