Qiao Yingzi was shaking her head and looking at Chen Yu sideways, feeling that there shouldn't be such a messy question.

"Yingzi, if you like astronomy, you should know this question. Gravity acceleration can determine position, which is of great significance in space science."

Song Qian gave a clear reminder and looked forward to her daughter's performance.

"20 meters in 2 seconds, the acceleration is 10 meters per second, the approximate standard value of the earth's acceleration is 9.8 meters..."

Qiao Yingzi scratched his head, where could this bear be?

Teacher Song’s collar is so high that Chen Yu really doesn’t know what color it is.

"Where is the point with the highest gravitational acceleration on the earth?" Song Qian reminded again that the acceleration reference catalog is easy to ignore, and students will only remember the number 9.8.

Regarding the friction force last time and the acceleration of gravity this time, Song Qian felt that Chen Yu was very good at checking for deficiencies. This kind of question is not difficult, but it is easy to lose points.

For physics, if something can be calculated in just a few steps, there is no shame in saying it is difficult.

"How does the acceleration of gravity change?" Song Qian was knocking on the table.

"As the latitude changes, I understand that assuming this bear is on the earth, it is most likely to be at the North and South Poles!" Qiao Yingzi clapped her hands, "Antarctica is a continent and there is no living space for bears, so this bear can only be a polar bear.

, so it is white."

"As expected of Qiao Xueba, awesome!" Chen Yu stood up and applauded, observing from a condescending angle that it was indeed white.

Song Qian clapped her palms, smiled broadly, and looked at her daughter with pleased eyes, not noticing anything else.

Qiao Yingzi was very proud that she had finally come back and defeated the usurper in front of her. She might get the first place in the monthly exam.

This kind of self-confidence made Chen Yu and Song Qian smile and narrow their eyes. It was a picture of everyone being happy, each getting what they needed and satisfying their own ideas.

"Teacher Song, Yingzi, goodbye!"

"Bye!"

The mother and daughter were holding each other's arms as they saw off guests in the corridor. It was different to have a man at home to reconcile.

Wang Yidi and her mother are also in the same situation, and they also need help. As the saying goes, those who can do more work, and no one is more capable than themselves.

The teacher also said that students should help each other, and the best students should set an example.

There is a courier at the door of my house, which means that I have to go to bed early tonight and get up early tomorrow. Send a WeChat message to Huang Zhitao: Good night!

At six o'clock in the morning, Wang Yidi's mother was busy making breakfast. For the sake of her daughter's study, these efforts are definitely worth it.

Chen Yu arrived at seven o'clock, which was just the right time. The door was opened by Wang Yidi. She was wearing a loose casual T-shirt and hot shorts. It was a very smart choice in such a hot weather.

"Classmate Yang Yang, please sit down quickly!" Mrs. Wang was very hospitable, "I don't know what you like to eat, so I just made these!"

"Auntie, you are so polite. These three fresh noodles look delicious, and these thin crispbreads, I can't wait!" Chen Yu knew that these two kinds of delicacies require a lot of work.

Wang Yidi tilted his head and forced out a smile, not bothering to complain about his mother's delicious cooking skills.

Whether it tastes good or not varies from person to person. There is no absolute standard. Chen Yu cleared the food on the table and proved it with his actions.

Mother Wang is very happy, as her mother-in-law looks after her son-in-law. He likes to eat so much, which shows that his craftsmanship has improved.

"Classmate Yang Yang, in order not to disturb your studies, I plan to go out to the supermarket. If you want to eat anything for lunch, you must tell me!"

"Auntie, I'm not that particular, I can eat anything!" Chen Yu praised her in his heart, this idea is great.

"Well, Di Di, you must study hard, you know? Yang Yang came here specially to help you with tutoring. You can't live up to this kindness..." Mrs. Wang said in a long way.

"I know, Mom, you go quickly!" Wang Yidi was impatient. No one could stand it after talking so much. He hoped she would go out quickly.

Mother Wang was polite to Chen Yu for a while, then put on her shoes, picked up her bag and walked out.

"Ji Yangyang, don't mind, my mother is like this."

"Being a mom is the same, let's get started!"

If Wang Yidi can enter the sprint class, he must have solid basic knowledge, but he cannot master the key and difficult points well and needs to improve his understanding and analysis skills.

Teachers unanimously agree that this method is suitable for all students. As long as you answer more questions, your ability will naturally improve.

What Chen Yu is going to talk about is mind mapping, which can help us organize information, summarize and analyze problems.

By explaining the difficult problems and analyzing the essence of the problem, as long as she persists, her comprehensive science scores will surely rise steadily over time.

Wang Yidi is a good student. She has a good learning attitude and listens attentively to the lectures. She firmly believes that Chen Yu's method is very effective, otherwise it would be impossible to change from the rear of the car to the front of the car.

"Studying requires a balance between work and rest, let's take a break!"

"Okay!" Wang Yidi actually wanted to continue.

"Do you remember the terms of the last bet?" Chen Yu had a smile on his face and began to look forward to it.

"Remember, tell me, what do you want me to do?"

"You dance for me and clean the glass!"

"What kind of dance is this and how to dance it?" Wang Yidi was a little curious.

"Let me show you a video!" Chen Yu turned on his phone and found the video of the dance anchor.

Wang Yidi started to study with his mobile phone, his face slowly turned red, and he couldn't stand it anymore after halfway through.

"Isn't it very simple?" Chen Yu also saw her shy look for the first time.

"Can you change it to another one... This kind of thing is too bad!"

"No, dance is art. You have to put your mind in the right place. Don't you think this dance is very interesting and cute?" Chen Yu took out the sailor uniform from the system space and handed it to her, "Quickly change!"

"Where did you get these clothes?" Wang Yidi remembered that when he came in, he didn't hold anything in his hand. "What model is your mobile phone? Why have I never seen it before?"

"I'll tell you when the dance is over!" Chen Yu urged again: "Hurry up, your mother will come back later, I don't care!"

"This dress is too revealing!" Wang Yidi held the top and saw that it was the same length as Xiaopangci. The entire waist was exposed, and the skirt and leggings were also comparable.

"If you like this one, you can!" Chen Yu took out another pink maid outfit with lace.

Wang Yidi was shy and curious about where the clothes came from and what kind of person he was. He wanted to see himself embarrassed.

"Didi, can you hurry up? You don't want to cheat, do you?"

"But...this...this..."

"Believe it or not, I called your mother and told her that you didn't study hard. Who do you think she would believe?"

Chen Yu took out his mobile phone, opened WeChat, and then clicked on Mama Wang's dialog box.

"Stop hitting me, I'll change it right away!" Wang Yidi ran into the bedroom, closing the door and locking it quickly.

Ten minutes passed and no one came out. Chen Yu couldn't help knocking on the door, "What are you doing? Does it take you so long to change clothes?"

"Coming, coming!"

The bedroom door was opened, and a little head popped out, with a red face and a very shy look.

"I'm really impatient. It only took a few minutes, but you've been bothering me for a long time!" Chen Yu put his hand into the crack of the door, grabbed her arm, and pulled her out.

The knee-high white socks, light blue pleated skirt, and tight top completely abandon the small waist, showing off the figure to the fullest.

"e on baby, follow the music!" Chen Yu snapped his fingers, feeling hot inside.

Wang Yidi's face was red, he was biting his lower lip, and he was dancing like a zombie, which was not interesting to watch.

"Where's your expression? Where's your stage performance? Have you lost your basic qualities as a dancer?" Chen Yu harshly criticized.

"Isn't that...I can't do that!"

"You need to have a natural expression, be generous, and relax your body. You don't need to tell me, right?" Chen Yu leaned into her ear and said, "If you don't cooperate, I'll carry you downstairs right now!"

"No, I'll cooperate!" Wang Yidi closed his eyes and began to adjust his mentality.

Chen Yu circled around her several times, watching her little face slowly return to normal.

"This dance is very simple, just follow the rhythm and clean the glass. If you don't know how, I will teach you!"

"Okay, then you teach me!"

Chen Yu demonstrated it once, and the whole process was very festive, which relieved her shyness and embarrassment.

"It's your turn, dance well!"

Wang Yidi started to dance to the music, but unfortunately he still couldn't let go and didn't learn how to do it.

"Let's start again, open your fingers and palms outward!" Chen Yu grabbed her hand and adjusted it, "First wipe left and right with one hand, then follow with your head, twist your waist, lift your legs, and follow your hands with your eyes!

”

"Wipe with your right hand, then wipe with both hands, up and down, left and right, make circles with your hands, puff your mouth to breathe, check the glass, and wipe again."

Chen Yu taught her wherever she spoke, and finally asked her to do it again as a whole.

"Pay attention to your eyes and facial expressions...be a little cute...a little joyful...and twist a little wider..."

As expected of a dancer, after liberating his nature, he dances very energetically, not to mention dancing face to face, the effect will be doubled several times.

"Is it okay?" Wang Yidi pinched his fingers and lowered his head.

"Didi, you are so beautiful!"

"I'm going to change clothes first!"
Chapter completed!