Yang Dan, 36, is an employee in the sales department of Xinghai Technology.

She is also a mother of two.

Among them, the eldest son, Chenchen, is 10 years old and is in the fourth grade of primary school.

The youngest daughter, Xuanxuan, is eight years old and is in the second grade of primary school.

After the company's product Xiaoxing learning machine was released last month, on the day the reservation was opened on the 16th, she took out a month's salary and placed an order to buy two, one for her son and daughter.

At that time, her husband was very angry: "Such an expensive learning machine, you can buy two at once, can't you buy only one?" Can you stop being such a loser? ”

"I bought it with my salary, and you want to take care of it?"

Her husband was helpless, just a pain in his flesh: "It's almost six thousand yuan." ”

A few days later, the learning machine arrived, and the son and daughter each had one and began to use it.

Yang Dan also guided the children to learn according to the instructions for the operation.

In the process of guidance, Yang Dan found that the Xiaoxing learning machine was far better than what the boss introduced at the press conference.

It's a learning artifact!

Because the learning route formulated by this learning machine is not the same as the arrangement in the primary school textbook, the knowledge points in the Xiaoxing learning machine constitute a tree diagram of knowledge points from bottom to top.

On that "knowledge tree", there are countless knowledge points, such as addition, subtraction, multiplication and division in mathematics, which requires mastering addition operations first, then subtraction operations, learning multiplication first, and then learning division.

In geometric knowledge, it is also necessary to master squares and rectangles first, and then to master triangles, trapezoids, and polygons...... From simple to complex.

Chinese and English also allow you to master pronunciation and phonetic transcription first, and then learn words and grammar...... It's a step-by-step process.

Of course, the learning of any knowledge system is actually the same, there is no such thing as learning complex knowledge first and then learning simple knowledge.

But the Little Star Learning Machine is more intuitive!

Through some tests, Xiaoxing learning function can directly know where the student's weak point is, and then display the red dot in the knowledge point tree diagram.

Students will be presented with knowledge as red dots, and after studying it twice, the red dots will turn into yellow dots.

Unless the student is familiar with the knowledge and is unlikely to forget it, the yellow dot will turn into a green dot.

Yang Dan's eldest son, Chenchen, did not have a good academic performance in the class, and always took pictures of the middle and lower reaches, Yang Dan was very scheming, so he asked his son to do a system test on the learning machine, and the result scared her a lot!

Among the knowledge points that a fourth-grade student should master, most of his son is shown in red, half is yellow and there are few green dots.

Even the third- and second-grade knowledge points below the treemap have a large number of red and yellow dots...... The green dot is less than half.

The learning machine directly gave an evaluation: a scumbag, which needs to be systematically reviewed.

Yang Dan's face was ugly, and he immediately pressed his son on the learning machine and supervised him to study every day, starting from the red and yellow dots at the bottom, and mastering them one by one.

As for her daughter Xuanxuan, the system test result is excellent, and she is a little genius, and she can try to challenge some knowledge points in the upper grades.

More than half a month later.

On the Xiaoxing learning machine, let my son do another system test.

Yang Dan smiled with satisfaction, his son's score reached more than 70 points, won the title of "learning weak", and was moving towards "learning strong".

What's even more gratifying is that Yang Dan found that his son, who was originally naughty and active, fell in love with learning and no longer resisted Xiaoxing's learning machine.

"Mom, I think what is said on the learning machine is much clearer than what the teacher said, and I can understand it as soon as I listen to it."

"And the teacher inside is so cute, the voice is so good, I especially like to listen to the class here."

"If there is anything I don't understand, Xiaoxing can answer me!"

His favorite is actually the homework help function, as long as you scan the question, you can list the answer steps and answers in a few seconds.

It's just that this function is an important "reward means" for Yang Dan, requiring his son to master at least 5 or more knowledge points every day in order to use the homework assistance function to reduce the burden on homework...... In order to do less homework, his son Chenchen can only learn more knowledge points.

However, when the weak knowledge points in front of him were almost mastered, Chenchen suddenly found that the homework assigned by the teacher did not seem to be particularly difficult, and he was slowly able to do some of it by himself.

As for her daughter Xuanxuan, Yang Dan was surprised to find that more than half of the knowledge points in the third grade of primary school had turned green.

……

Another half a month later.

The son's and daughter's schools have held mid-term exams one after another.

"Mom, Mom, I'm third in the class, I'm third in the class!" The son rushed home excitedly with the test papers.

"Mom, this exam is so easy, and I won the first place again." Daughter Xuanxuan, who felt unchallenging, returned home listlessly, and she submitted her papers in advance for several exams, which caused countless surprises.

"Third in the class?!"

Yang Dan exclaimed in surprise: "Son, you are amazing!" Let's go, mom will take you to play, mom will take you to eat McLeuckey! ”

"No!"

The son shook his head and said: "In this exam, my total score is only 5 points away from the first in the class, I think I can surpass him, I want to continue studying!" With that, he picked up the learning machine again.

Yang Dan was speechless in shock, this scholar-like tone, this strong man's momentum, this ...... Is it still the same son as before?

However, two days later, after a phone call from his son's head teacher, Yang Dan knew that his son was holding his breath in his heart!

Because after the results of the midterm exam came out this time, the son, who was originally in the bottom, suddenly jumped to third, which caused a lot of doubts.

"It must have been copied!"

"You cheated on exams!"

Son Chenchen blushed and retorted that he didn't, but none of his classmates believed it.

I could only clench my fists and say to my classmates: "Next time, I will take the first place in the class to prove that I am not cheating!" ”

But it caused a lot of disdain and ridicule.

Even in the phone call from the head teacher to Yang Dan, he vaguely questioned: "Your son, is there any (plagiarism)?" ”

"No, absolutely not, his test results are absolutely real results!"

Yang Dan said loudly, seeing his son standing at the door, his eyes were red, and he ran back to his room and slammed the door shut.

Yang Dan suddenly realized the seriousness of the problem, and knew that if his son continued to be misunderstood by his classmates and teachers, it would cause great damage to his psychology.

The next day, she took a day off, followed her to her son's school, and after the second class, she walked into the classroom, took out the Xiaoxing learning machine in her bag, and of course the head teacher and the students who had not left yet, gave an explanation.

"Students, our Ou Xiaochen's mother, Chenchen's academic performance has improved a lot recently, not because he cheated on the exam, but thanks to Xiaoxing's learning machine......"

As a salesman, Yang Dan has already practiced the face of various customers, and her eloquence is also quite good, in just twenty minutes, she explained the advantages of Xiaoxing's learning machine clearly, which made people nod again and again.

"Ou Xiaochen, I'm sorry, I misunderstood you, I apologize to you." The students apologized.

"Xiaochen, the teacher is also at fault, he didn't investigate clearly, he guessed randomly, and the teacher apologized to you." The head teacher looked ashamed.

The misunderstanding of the teacher and classmates about his son was successfully resolved.

However, after a few days, her son said to her depressedly: "Now there are seven or eight students in the class who have started to use Xiaoxing learning machines, and the second in the class is also using it, Mom, why are you explaining to them, how can I get the first place in the class like this?" ”

Seven or eight people?

An electric light flashed in Yang Dan's mind!

Xiaoxing learning machine, she knows how to promote it!