Grade1-2: above A90, above B 75, above C 60 and below D 60.

Grade 3-5: above A 85, above B 70, above C 60 and below D 60.

From primary school to junior high school, the first thing students face is the change of learning content. In primary schools, there are few subjects to study and the learning tasks are not too heavy. After entering middle school, there are more courses and more learning tasks.

Chinese, mathematics, politics, foreign languages, history, geography and biology have all been added at once, and the difficulty has increased. There is less and less common sense in subject content.

Reflecting the regularity of objective things and the rigor and logic of knowledge are getting stronger and stronger, which makes students who have just entered middle school feel fresh and uncomfortable. Because some students can't adapt to this change, they lack confidence in their studies and their grades drop.

Extended data:

The meaning of crosswalk signal: when the green light is on, traffic is allowed; When the green light flashes, pedestrians are not allowed to enter the crosswalk, and those who have entered the crosswalk can continue to pass; When the red light is on, no vehicles are allowed to pass.

When crossing the road, you should get into the good habit of watching traffic signals. At the same time, pay attention to traffic, and don't chase, rush, cross diagonally or suddenly change the direction of the road. Don't lean on the guardrail and isolation pier, and don't cross or drill through the guardrail and isolation pier to cross the road. Instead, take the overpass and underpass. In the distance where there is no crosswalk, you must go straight through, take the initiative to avoid passing vehicles, and don't rush when the vehicles are approaching.

On urban roads, white lines or yellow lines are generally used to divide roads into motor vehicle lanes and slow lanes for slow vehicles such as bicycles and human tricycles.

There are pedestrians on the sidewalk, don't walk side by side on the sidewalk, and try to pull over on the road where there is no sidewalk. Junior students should be led by their parents when they go out. When walking, if someone crosses the road to say hello, don't cross the road suddenly to prevent accidents.

Baidu Encyclopedia-Evaluation Criteria

Baidu encyclopedia-primary school students