I Found A Planet

Yang Dan is 36 years old this year and is an employee of the sales department of Xinghai Technology Company.

She is also a mother of two children.

Among them, the eldest son, Chenchen, is ten years old and is in the fourth grade of elementary 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 pre-orders opened on the 16th, she spent a month's salary and placed an order to buy two sets, one for her son and one for her daughter.

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

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

Her husband had no choice but to feel pain in his heart: "It's almost six thousand yuan."

A few days later, the learning machine arrived, and each son and daughter started using one set.

Yang Dan also guides his sons and daughters to learn in accordance with the operating specifications in the manual.

In the process of teaching, Yang Dan found that the Xiaoxing learning machine is much easier to use than what the boss introduced at the press conference.

It is simply a learning artifact!

The learning route formulated by this learning machine is different from that arranged in elementary school textbooks. The knowledge points in the Xiaoxing learning machine form 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. You must first master addition operations, then master subtraction operations, learn multiplication first, and then learn division.

In geometry knowledge, it is also to master squares and rectangles first, and then to master triangles, trapezoids, polygons... from simple to complex.

Chinese and English also let you master the pronunciation and phonetic symbols first, and then learn words and grammar... It is a gradual process.

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

But Xiaoxing learning machine is more intuitive!

Through the system test, Xiaoxing learning machine can directly know where the students' weak points are, and then display them with red dots in the tree diagram of knowledge points.

Students will present the knowledge as red dots, and after learning it twice, the red dots will turn into yellow dots.

Unless the students have mastered the knowledge point thoroughly and are unlikely to forget it, the yellow dot will turn into a green dot.

Yang Dan’s eldest son, Chen Chen, did not perform well in class, and was always ranked in the middle and lower reaches. Yang Dan was very impatient, so he asked his son to take a system test on the learning machine, and the result shocked her a lot. !

Among the knowledge points that fourth-grade students should master, a large part of the son is red, a small part is yellow, and there are not many green dots.

Even the third-grade and second-grade knowledge points below the tree diagram have a large number of red dots, yellow dots... less than half of the green dots.

The learning machine directly gives an evaluation: it is a scumbag and needs a systematic review.

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

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

More than half a month later.

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

Yang Dan smiled gratifiedly. His son's score reached over 70 points, won the title of "weak student", and is moving towards "strong student".

The more gratifying change is that Yang Dan discovered that his naughty and active son fell in love with learning and no longer resisted the little star 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 hear it."

"And the teacher inside is so cute, the voice is nice, I really like listening to the lessons here."

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

What he likes the most is actually the homework tutoring function. Just scan the question, and the steps and answers will be listed in a few seconds. Doing homework is too easy, isn’t it?

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

However, when the previous weak knowledge points were almost mastered, Chenchen suddenly discovered that the homework assigned by the teacher did not seem to be particularly difficult, and gradually he was able to do some of it.

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

...

Another half month later.

The son and daughter's schools held midterm exams one after another.

"Mom, Mom, I got the third place in the class, I got the third place in the class!" The son rushed home with the test paper excitedly.

"Mom, this exam is so easy, and I got the first place again." Daughter Xuanxuan, who felt that there was no challenge, returned home listlessly. She handed in the papers in advance for several exams, which caused countless surprises.

"The third in the class?!"

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

"No!"

The son shook his head and said, "In this exam, my total score is only 5 points away from the first place in the class. I think I can surpass him. I will continue to study!" After finishing speaking, he picked up the learning machine again.

Yang Dan was so shocked that he couldn't speak, this tone of a bully, this aura of a strong man, is this... still the son from before?

However, two days later, Yang Dan found out about an inquiry call from his son's homeroom teacher, and his son took a deep breath!

Because after the results of the mid-term exam came out, the son who was originally from the bottom suddenly jumped to the third place, which caused a lot of doubts.

"Copy it, it must be a copy!"

"You cheated on the exam!"

His son Chenchen blushed and retorted that he hadn't, but none of his classmates believed it.

I could only clenched my fists and said to the students: "Next time I will take the first place in the class to prove that I didn't cheat!"

But it caused a lot of disdain and ridicule.

Even the teacher in charge made a phone call to Yang Dan, cryptically questioning: "Is your son (plagiarism)?"

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

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

Yang Dan immediately 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 psychological harm to him.

The next day, she asked for a day off and went to her son's school. After the second class, she walked into the classroom, took out the small star learning machine in her bag, and made gave an explanation.

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

As a salesperson, Yang Dan has already developed the face to face various customers, and her eloquence is also quite good. In just 20 minutes, she explained the advantages of Xiaoxing Learning Machine clearly, It makes people nod again and again.

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

"Xiaochen, the teacher is also at fault. He didn't investigate clearly, so he made a wild guess. The teacher also apologizes to you." The class teacher looked ashamed.

The teacher and classmates misunderstood his son, and it was resolved smoothly.

After a few days, the son said to her depressedly: "Now there are seven or eight students in the class who have started to use the Xiaoxing learning machine, and the second in the class is also using it. Mom, why are you explaining to them? How can I do this? Take the first place in the class?"

Seven or eight people?

A flash of lightning flashed in Yang Dan's mind!

Xiaoxing learning machine, she knows how to promote it!