Reflection on Subtraction Checking
There were a few points worth reflecting on in the teaching of deduction: 1. ** Arithmetic understanding **: When the students are asked to work together in small groups to self-study the calculation of deduction based on their existing addition calculation methods, although the students can come up with a variety of methods and participate actively, if the teacher does not emphasize the relationship between minuend, reduction, and difference enough, it will cause students to make mistakes such as using reduction to reduce difference or difference to reduce reduction. This shows that a thorough understanding of the calculation theory is crucial. 2. ** Teaching arrangement **: For example, the addition and deduction calculation is divided into two classes because students made more mistakes when doing addition and deduction homework. In the teaching of addition calculation, by adding review questions to pave the way for new knowledge, students could be motivated. Students could also quickly discover the calculation method, and they could also use the student's name to increase their participation. However, if only the addition calculation was taught, the amount of practice in the classroom might not be enough, and the slow calculation speed of the students would affect the practice density. 3. ** Overall teaching planning **: You need to understand both the teaching materials and the students. The life situations in the teaching materials (such as the scene of buying things containing addition and substitution problems) could be used to introduce new lessons and lead to verification teaching. At the same time, they had to make clear the teaching objectives (such as letting students learn the calculation method of addition and deduction, developing the habit of checking, improving the accuracy of calculation, etc.), the key points (addition and deduction checking), the difficult points (the variety of checking methods), prepare the teaching aids, and also consider how to take care of the poor students, design the teaching links (knowledge laying, questions, homework, knowledge extension, etc.). 4. ** Teaching Method **: The teacher should not talk too much. The classroom should be returned to the students so that the students can learn the knowledge of deduction calculation through self-study and exploration. Read more exciting novels for free
Reflection on Non-abdication Subtraction Activity within 20 Years of Senior Class
After carrying out the non-abdicating substitution activity within 20 years in the big class, the following points were worth reflecting on: ** 1. Teaching methods ** 1. ** Setting up a scenario ** - The flexibility and effectiveness of the situation creation needed to be considered when teaching non-abdicating substitution within 20 years. The purpose of creating a situation was to make children have a need for calculation and permeate the application problem teaching. However, if the situation was not created properly, such as being too complicated or out of touch with the child's life, it would make it difficult for the child to understand. For example, if a child were to set up a scene that was far away from his daily cognition, such as a virtual interstellar mathematical calculation scenario, the child might not be able to associate it with the non-abdication and substitution within 20 years. The situation should conform to the characteristics of the child and take into account the adaptability of the knowledge. It should be based on the life scene that the child is familiar with, such as dividing candy, counting toys, etc. This can better help the child understand the concept of deduction. 2. ** Game segment ** - Games were an effective way to attract children to participate in computational learning. It could be used in the form of group competitions in teaching practice. For example, the calculation card could be placed on the table, and the child could find the specific deduction formula according to the requirements. However, in the game design, it was necessary to ensure that the rules of the game were simple and easy to understand, and that it was challenging and interesting. If the rules of the game were too complicated, the child might lose interest because of the difficulty in understanding, and if the rules were too simple, it would not effectively train the child's computational ability. 3. ** Practice Form ** - It was important to have a variety of practice forms for the practice of non-abdication and substitution within 20 years. Although driving a train or answering on call could increase the participation of children, it was also necessary to pay attention to whether each child's participation opportunities were equal. In actual practice, there might be some children who were introverted or slow to react and rarely participated in the practice. In addition, the frequency and intensity of practice should also be moderate. Too much might make the child feel bored, and too little might not be conducive to the child's proficiency in calculation skills. ** 2. Children's learning situation ** 1. ** Comprehension ** - There were differences in children's understanding of the concept of non-abdication within 20 years. Some children may be able to quickly understand the concept of direct deduction when the minuend is larger than the subduction, but some children may confuse non-abdication and abdication. This could be due to the lack of clear explanations of concepts or the lack of examples. For example, when he explained 19 - 12, he did not fully emphasize the key concept of 9 being larger than 2, so he directly deducted it. 2. ** Calculation accuracy ** - In terms of calculation accuracy, although it was relatively simple to use the non-abdication method, young children could still make mistakes. It could be due to carelessness, such as misreading numbers, or it could be due to lack of familiarity with numbers, such as calculations such as 11 - 2. Children might make mistakes when counting their fingers in their minds. This required strengthening the perception of numbers in the teaching process, such as through the number card game to make children more familiar with the numbers 1 - 20. ** 3. Teacher's teaching process ** 1. ** Teaching rhythm ** - Grasping the teaching rhythm was very important for children to learn to not abdicate within 20 years. If the pace of teaching was too fast, the child might not be able to keep up and not have enough time to digest what he had learned. If the pace was too slow, the child might be distracted. For example, after introducing the concept of non-abdication, a lot of practice sessions were immediately carried out. Children might start to do the questions before they fully understood the concept, which would easily lead to frustration. Teachers needed to adjust the teaching pace according to the children's classroom reactions to ensure that every child could keep up with the teaching progress. 2. ** Guidance Method ** - In the process of teaching, the way the teacher guided the children directly affected their learning results. Teachers should use a more intuitive and vivid way to guide children to understand the non-abdication of the 20-point reduction. For example, in addition to using numerical calculations to explain, one could also use physical teaching aids, such as using small wooden sticks to demonstrate the process of 15 - 3, so that children could more intuitively see that there were 12 wooden sticks left after taking away 3 of the 15 wooden sticks. This way, children could understand the practical meaning of deduction better than simple numerical calculations. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Write a subtraction story.
Once upon a time, there was a farmer who had 20 sheep. One day, 8 sheep got lost. We can write this as a subtraction story: 20 - 8. To find out how many sheep are left, we start with 20 and take away 8. We can break 20 into 10 and 10, and 8 into 5 and 3. First, take away 5 from one of the 10s, we get 5 left in that part. Then take away 3 from the other 10, we get 7 left in that part. So in total, there are 12 sheep left.
Write a subtraction story about money.
I had 50 dollars. I spent 20 dollars on a book. So the subtraction story is 50 - 20 = 30. I have 30 dollars left.
What are the benefits of teaching subtraction stories?
It makes subtraction more interesting. Instead of just looking at numbers, students get to engage with a story, which is more fun. For example, a story about sharing toys can show subtraction in a natural way.
How to teach subtraction story problems effectively?
You can start by using real-life examples. Like, if you have five apples and eat two, how many are left? That makes it relatable and easier for kids to understand.
Write a Math Story Involving Addition and Subtraction
There were 12 apples on a tree. A little boy climbed the tree and picked 5 apples. So there were 12 - 5 = 7 apples left on the tree. Then his sister came and brought 3 more apples she had found elsewhere. So in the end, there were 7 + 3 = 10 apples in total.
Self-reflection, reflection, writing material
The following is some writing material for self-reflection: * * 1. Famous sayings and aphorisms ** "When you see a wise man, you should imitate him. When you see an unwise man, you should reflect on yourself!" This sentence came from the Analects of Confucius. It reflected that one should learn from others when they saw their talents, and reflect on themselves when they saw their shortcomings. "I reflect on myself three times a day" also came from the Analects of Confucius, which conveyed the idea of self-reflection many times a day. * * 2. Story and examples ** 1. * * The story of a five-year-old son sharing an apple ** - The mother asked her five-year-old son what he would do if he had two apples. The son said that he would take a bite of both apples. The mother was disappointed at first, but later the son explained that he wanted to give the sweetest one to his mother. This story reflected the importance of learning to listen. It was also a self-reflection perspective. When judging other people's behavior, one should not rush to conclusions, but first understand the reasons behind it. 2. * * A love story that doesn't say "I love you"** - When he proposed, he said "trust me". When she gave birth, she said "it's been hard on you". When her daughter got married, she said "I'm here". When she was dying, she said "wait for me". She never said "I love you" in her life, but love never left. This story could guide people to reflect on themselves. There were many ways to express love, and it was not possible to judge whether love existed or not simply by words. 3. * * The story of a son carrying his mother up the mountain ** - If the son could not afford it, the mother would carry the mother up the mountain and abandon her. The mother would secretly sprinkle beans on the son's back. Later, the son might reflect on his unfilial behavior. This story could be used to reflect on how people treated their family. People needed to reflect on whether their actions were ethical. 4. * * The story of three young men and a mirror ** - The three young men looked in the mirror once a day, ten times a day, and once every ten days. The first person was self-reflecting and washed away the dust to continue on the road; the second person was too self-reflecting and hid in the house, afraid to go out; the third person did not reflect on himself, and no one was willing to go with him. This story can be used well to argue that self-reflection needs to be moderate. 5. * * The Story of Yi Xi ** - Yi Xi observed the stars and knew that the Saint was coming. He fasted, bathed, cleaned the road and waited for the Saint. Lao Tzu didn't want to write at first, but he was sincerely moved to write Tao Te Ching. Yi Xi reflected on himself and improved in time, thus obtaining the sage's words. This example shows that self-improvement through self-reflection can bring positive results. 6. * * Successful people's examples of self-discipline ** - For example, Zeng Guofan encountered the temptation of laziness and pleasure when he was young, but after realizing his own shortcomings, he went to success through self-discipline and self-reflection. It could be used to explain the importance of self-reflection to personal growth, especially to success. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How can one identify the differences in a subtraction story?
You can look for changes in the numbers or the way they're presented. Maybe the order of subtraction or the context of the problem could be different.
What are the benefits of using story for free addition and subtraction?
It makes the concepts more interesting. For kids, plain numbers can be boring, but a story with characters and situations makes it engaging. For example, a story about a magic forest where animals are adding or subtracting fruits is much more appealing.
Challenging 2nd grade math stories: Subtraction scenarios
In a 2nd grade math story for subtraction, if it says 'There were 7 cookies and John ate 3 of them.' Then you subtract 3 from 7. 7 - 3 = 4, so there are 4 cookies left.