While it is true that opportunism can achieve some goals, it is not what the teachers in this class want to pass on to the children. Teacher Mu first praised Xixi for her meticulous observation, and then drew a line on the small blackboard.
The small blackboard used by Mr. Mu is a magnetic blackboard, and the chalk is also water-soluble dust-free chalk, which is more secure for the children’s health.
After Mr. Mu finished drawing the long white line, he said to the children, “For example, this is a line that my mother wants to cut, okay?”
“Then the blackboard eraser in Xixi’s hand is the scissors in mother’s hand. If we erase a little bit like this, we can even cut it open.” Teacher Mu handed the blackboard eraser to Xixi and taught her to make gestures. Then he encouraged, “Come on, Xixi, try it out and see how many times it takes to cut it into five sections, slow down…”
Xixi likes this part the most. She can cooperate with the teacher to do “experiments”. Under the stands, Lu Weisha and Yang Luoqi are all envious.
The little girl happily picked up the blackboard eraser and wiped it with the corner along the spot where the teacher had just drawn.
“How many paragraphs is it now?” Teacher Mu asked.
“Two paragraphs!” Xixi raised her head and answered quickly, this little question was hard for the clever Xixi.
“Go ahead, cut to five paragraphs and then stop.” Teacher Mu encouraged.
Xixi understood quickly. When she cut to the fourth cut, she stopped, but the little girl still hesitated.
“How many paragraphs is it now?” Teacher Mu asked.
Xixi began to count, only to hear the little girl’s voice clear and clear like a big pearl falling on a jade plate, and counted happily: “One, two, three, four, five…”
“Is it the fifth dan?” Teacher Mu asked with a smile.
Those children in the audience were also unwilling to be lonely at this time, and they scrambled to shout “Five Duan”.
Xixi also nodded, but after the little girl nodded, she hesitated again, and raised the question in her heart: “But, teacher, I only cut it four times!”
The little girl is bewildered and amazed by this.
Why only four cuts?
Mr. Mu explained with a smile: “When we usually give fruits to children, if we give a watermelon to two children, should we cut a knife from the middle? Then if we want to give it to four children, should we cut it? After one cut, you have to cut one cut at each of the two halves of the watermelon, making three cuts in total?”
Mr. Mu usually cuts watermelons like this. The greedy children are sometimes stopped by Mr. Cai and Mrs. Shen, drooling from a distance to watch Mr. Mu cut the watermelon. Quickly, they all shouted in response.
This is easy to understand. Mr. Mu went on to explain the principle of cutting the rope four times into five sections using the same principle as cutting a watermelon.
However, unlike other questions, the answer to this question is open-ended, not just one!
Mr. Mu smiled again and said, “Although it takes four times to cut a rope into five sections, in order to save energy and time, the teacher can cut a rope into five sections with only one cut.”
Only one cut?
The quick-responding children have already cried out “wow”, while the slower-responding children are still looking at the teacher in a daze: “What is the teacher talking about?”
Xixi belongs to the former, but she doesn’t have “wow”, she is surprised: doesn’t it need to be cut four times? Why did the teacher say that one cut is enough?
The little girl’s mind is full of curiosity at this moment. Her big watery eyes looked up at Teacher Mu, and she couldn’t bear to blink, as if she was waiting for the moment when Teacher Mu staged a miracle!
Mr. Mu didn’t let Xixi go back to her place either. At this moment, she really took out a long red plastic wrapping rope and said with a smile, “Xixi, teacher needs your help now. The teacher is busy.”
“Okay!” the little girl readily agreed.
Mr. Mu asked Xixi to hold the wrapping rope and fold it in half twice, then hold both ends in her hands.
“Now the teacher wants to cut from the middle!” Teacher Mu asked Xixi to hold the packaging rope on the side, so that her scissors would not be facing Xixi, and other children could see it.
But when Xixi saw the bright scissors gesturing between her two small hands, she couldn’t help whispering to Teacher Mu: “Teacher, I’m afraid…”
“Don’t be afraid, the teacher will be very careful.” Teacher Mu comforted Xixi softly.
At this moment, it was really a moment to witness a miracle. Even the most skinny Wang Xijun couldn’t care about the noise at this moment, and looked nervously at Teacher Mu’s scissors.
The scissors snapped open the packaging rope in Xixi’s hands. Teacher Mu didn’t rush to speak, but first put away the scissors, which were dangerous to children, and locked them before taking out a Put the colorful magnets and let Xixi count how many pieces of packaging rope she has.
In order to let other children see the counting result more intuitively, Mr. Mu also asked Xixi to count one and hand it to herself. She used a magnet to stick the packaging tape on the magnetic blackboard.
“One, two, three…” Xixi read, but she wasn’t counting alone, and the other children also shouted excitedly.
As if they were expecting a miracle too!
Finally counted to the fifth item, Xixi’s eyes were filled with a smile of surprise, she spread out her empty hands, and said with surprise and joy: “No more!”
“Is it the fifth dan?” Teacher Mu asked with a smile.
“It’s five paragraphs! It’s amazing!” Chen Shiyun shouted impatiently following a few children below.
Xixi also nodded, but she soon discovered something, the little girl pointed to the packaging rope on the blackboard and said, “But, teacher, this and this rope are too short!”
Of course, the ones cut from the middle after folding are of different lengths, some are very long and some are very short.
“It doesn’t matter, because our problem is, how can my mother cut it into five sections, not five sections that are exactly the same length, so it can be cut into five sections with only one cut, which is still possible.” Teacher Mu faced Zhu Xixi’s observation ability is a bit of a headache, so she can only explain it this way.
Why is it one knife and five paragraphs?
Mr. Mu did not explain, but left a space for the children to think. She also gave each child a wrapping rope to study on their own small table, and after returning home, they would have a good time with their parents. With the help of , could the study be able to cut into five strips with other cuts?
…
In the afternoon, Yang Yi brought Xixi back, and the little girl couldn’t wait to tell her father what she learned today.
“That’s very good!” Yang Yi said with a smile, “Tonight, Dad will study with you, not just once or four times, there are many possibilities in between. Moreover, let’s see together, how to fold, As much as possible, cut the rope into five pieces of about the same length.”
“Okay, okay!” The little girl nodded eagerly.
But ~IndoMTL.com~ not only Yang Yi and Xixi were studying the rope at night, Lan Xin also joined in.
Lanzhou Kai went to Wucheng County, Jinling City to help Yang Yi buy land. He was away from home for a long time on a business trip. Yang Yi had to help guide Lan Xin’s study!
Of course, the two little girls got together, playing and learning, learning to play, and this interest was even stronger.
“You only need one knife to cut a watermelon, because the watermelon is relatively large, but for apples, you can cut the two halves with one knife, put the two halves together, and then cut them into four parts with one knife…” Yang Yi When instructing the two little girls to play with the folded rope, Murphy also watched with a smile on the side with a small scorpion.
“Sister, hurry up and learn, you have learned it, when my brother grows up, you can teach me, okay?” Murphy held Xiaojiao upright, so that he could rely on his arms Sitting in his arms, then shaking the little guy’s little hand, he said in a small voice.
When Xixi heard it, she raised her head and looked at her brother from the rope in her hand.
“Giggle, that Mama, am I my brother’s teacher?” The little girl laughed happily and said with great interest.