Reflection on the teaching of two-digit minus one-digit abdication and mental arithmetic
In the teaching of two-digit minus one-digit abdication, there are the following points worthy of reflection: ** 1. Grasping the student's basic knowledge ** 1. ** Using existing knowledge ** - Before the students learned two-digit minus one-digit abdication, they had already mastered the abdication of less than 20, two-digit plus one-digit, and tens, two-digit minus one-digit non-abdication, and tens. In teaching, we should make full use of this existing knowledge and guide students to learn new content through knowledge transfer. For example, when faced with a question like 36 - 8, the student could recall the situation where 6 - 8 was not enough to reduce the number within 20, and then think about how to solve a similar problem in two-digit numbers. 2. ** The impact of differences in knowledge base on teaching ** - There were differences in the degree of mastery of previous knowledge between students. Some students did not have a solid grasp of abdication within 20, which would lead to difficulties when calculating two-digit minus one-digit abdication. For example, the calculation speed was slow and error-prone. This requires teachers to pay attention to this difference in the teaching process and provide targeted guidance to these students. ** 2. Teaching methods ** 1. ** Diverse algorithms and understanding of arithmetic ** - In teaching, it is important to encourage students to calculate in a variety of ways. For example, for 36 - 8, students might have 36 - 6 - 2 = 28, divide 36 into 20 and 16, calculate 16 - 8 = 8, then 20+8 = 28, or divide 36 into 10 and 26, calculate 10 - 8 = 2, then 26 + 2 = 28, etc. However, in this process, although there were various algorithms, students might not be able to express the algorithm clearly, especially when it came to middle and lower physiological solutions. Teachers needed to guide students to explore various algorithms, but at the same time, they needed to pay more attention to letting students understand the calculations behind each algorithm, such as the meaning of borrowing. 2. ** Operation and Practice Section ** - Placing sticks was an effective way to help students understand arithmetic. However, there might be problems in practice. For example, the teacher did not let the students prepare the learning tools (sticks) in advance, and did not let the students count the sticks in advance, which led to the waste of time in the classroom. Moreover, when the students placed the sticks, some teachers only asked the students to talk about the process of placing the sticks, but ignored the practical process of letting the students go to the stage to show how to take 8 sticks out of 36 sticks. This was not conducive to the students 'in-depth understanding of mathematics. 3. ** Teaching Quick Calculation Skills ** - Subtracting a two-digit number from a one-digit number had a quick calculation trick, such as adding 1 when minus 9, adding 2 when minus 8, and so on. However, if one only focused on imparting quick calculation skills in teaching, and the students did not understand its essence (the essence was to break the ten methods), it might cause the students to memorize it mechanically and not be able to use it flexibly. The teacher should emphasize the connection between speed calculation and arithmetic while explaining the skill. ** 3. Cultivating students 'abilities ** 1. ** Cultivation of the ability to express oneself ** - In the teaching process, we should pay attention to cultivating students 'ability to express themselves. Students could only clearly describe the calculation method and process after they understood the calculation theory. For example, in the calculation process of 36 - 8, students should be allowed to explain the calculation process more often. This would help them think clearly and allow teachers to better understand the students 'mastery. 2. ** Cultivating Awareness of Independent Exploration and optimization of algorithms ** - It was necessary to guide students to carry out independent and exploratory learning and cultivate their good learning habits. After the students explored a variety of algorithms, the teacher should organize the students to compare these algorithms, guide the students to optimize the calculation method, and enhance the awareness of the optimization algorithm. For example, students could compare the difference in calculation speed and accuracy of different algorithms to choose the algorithm that was more suitable for them. ** 4. Pay attention to students of different levels ** - In classroom teaching, not only should we pay attention to cultivating students 'creative expression ability, but we should also pay attention to the learning mastery of the backward students. Teachers could not only focus on some of the positive students, but should focus on every student, discover and correct the students 'mistakes in time, so that every student could experience the joy of success, and ensure that all students could better master the mental arithmetic method of two-digit minus one-digit abdication. Read more exciting novels for free
How much is the Harvard m6 automatic transmission?
The manufacturer's guide price of the Harvard M6 2023 Plus 1.5T ADC Elite Zhilian model was 81,900 yuan. The current terminal discount was 17,000 yuan. After the discount, the bare car price was 64,900 yuan. The car insurance cost about 4,000 yuan, the car purchase tax was 5,743 yuan, the license plate fee was 300 yuan, and the reference price was 74,943 yuan. However, the price might fluctuate in different regions and different sales periods. The novel " Good Chang 'an " is equally exciting. Everyone is welcome to click and read it!
The protagonist is called Metal, Wood, Water, Fire, Earth
I recommend " Naruto: The Legend of Heaven and Men ", a Naruto Doujinshi written by a newcomer. Although his writing strength is limited, he will try his best to portray the Naruto world in his heart. The plot was different from the original. There was no system, no blood, and Naruto's history was expanded. The story unfolds in the specious world of Naruto. Various mysterious elements, such as the origin of the big cylinder wood clan, will be revealed by the protagonist. The author hopes that everyone will give suggestions. " Doomsday: I Can Choose Three LoL Skills " was a game from another world. The male protagonist Han Xuan could choose three LOL skills to survive in the apocalypse. He had many ideas for choosing skills, but in the end, he chose [All Skills are Stealing]. After 10 years, he was surrounded and killed. He activated Ike's big move to reset his skills. The characters included the decisive Han Xuan, the calm and collected Huo Shu, and so on. However, this book was a cool and unscripted novel, so it was only worth two stars. " The Arrival of the Naruto Tree of God " was a story where the main character was reborn as the Thousand-handed Rope Tree to change the ninja world. Some readers thought that the setting was good but the plot was complicated. However, it was rare to reappear in the Wood Escape Sect, so the overall evaluation was not bad. Naruto: The Savior used Shui Mu as the main character to save the world. There was no cheat, and the main character relied on hard work to improve his strength. Although the title was bad, the content was good. The logic was smooth and not bad. It was a good book that was dragged down by the name. " Naruto's Divinity in Hand " talked about the protagonist bringing his Divinity to the Naruto World. He neither knelt down to lick the leaves nor defected. He was very rational and would bring changes to the Naruto World. It was quite well written. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The sentence that laments the passing of life
He recommended a few good novels. " I'm Really Not a Fauve Forward " was a sports basketball novel written by the Third Master of the Body. The main character was Suter, and there were also special characters like Stephen Jackson. " Life and Death Doctor " was an ancient romance novel written by Teriyaki Eggplant. It told the story of a doctor and the Grim Reaper. " Say Goodbye to My Dead Love " was a novel written by Dream Night's Sky. The female protagonist faced multiple loves in the context of the Nine Dragons Competition for the throne. " Longevity: My Dojo Can Upgrade " was a Xianxia novel written by Ju Qin. The male protagonist, Xu Jin, brought the game to transmigrate and cultivate immortality. " Living Beauty Brings Life to Immortality " was not bad either. It was Wei Feng's fairy tale novel. The female protagonist was reborn to seek the truth. The style was unique. Although there were some small flaws, it was very attractive. The first hundred words could be used as an introduction, and the later parts gradually improved. Moreover, Wei Feng's writing style was good. This work from a few years ago was worth reading.
The female protagonist is a thousand-year-old black turtle. What are the good names in the novel?
A novel of extreme anger
I recommend a few novels to you. The ancient romance " The Best Vixen " written by Feng Yili was super interesting. The female protagonist, Lin Su, dressed as a young girl who was about to sink into a pond. She did not believe in curses and turned on the vixen mode. She cursed all the way from the countryside to the court. She wanted to be a lady, but she was forced to become a vixen by the world. She quarreled very badly. Ai Guorong's game novel," Wrath in Wuxia ", had the protagonist running amok in the world of Wuxia. This was not a brainless novel, but it could be read without using a brain. However, the protagonist had a dark personality. In the military novel " The Iron-Blooded Soldiers of the Anti-Japanese War ", Leng Jian brought new recruits back to the country to fight against the Japanese, using their blood and lives to protect the country. The novel," Sword of Fortune and Might, I am Lin Pingzhi," was written by the conscience of the industry. The protagonist traveled through the Jianghu and became Lin Pingzhi. He loved to read, practice martial arts, and make friends. Although he was not talented, he was willing to sacrifice his life for his friends. Lian Hong's light novel," I'm Red A, Treasures from the Other World Sell Like sold well cakes." The male protagonist, Tang Ming, and Red A traveled across the Other World to open a weapon shop. There was also the female protagonist, Celia Carpe. The story was very interesting. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Shen Congwen and His Wife
Bibi, the heroine of Shen Congwen's novel," Housewives," used his wife Zhang Zhaohe as the model to describe Bibi's married life with her husband. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Smart camera falls and alarms
The smart camera's fall alarm was a safety function that was implemented using advanced technology. Some smart cameras use deep learning algorithms, AI algorithms, and image analysis technology to monitor falls. This type of camera can usually be used to monitor the elderly, high-risk groups, or people in specific places (such as homes, nursing homes, hospitals, rehabilitation centers, public places, etc.). It could monitor the posture changes, movement patterns, and other behavior characteristics of people in a specific area in real time. When it detected that someone suddenly lost their balance and fell, the camera would immediately analyze the data. If it was confirmed that a fall had occurred, an alarm would be automatically triggered. The alarm message would be sent to relevant personnel, such as family members, nursing staff, medical staff, or security personnel, so that they could be rescued in time. For example, the AI fall monitoring alarm camera for the elderly was specially used to monitor the fall situation of the elderly and give an alarm; the C6Wi smart home camera 400MP version and 4K version of the fluorite smart home camera supported fall detection, which could identify the situation of family members falling through images. When someone stood up and fell down, it would give an alarm in time to help care for the elderly at home. In addition, in order to make the fall detection function work better, it may be necessary to pay attention to the installation location (for example, the fluorite smart home camera is recommended to be installed in a relatively empty care area indoors, inverted at a position of 2 - 3.5 meters high), adjust the angle to ensure that the image can effectively capture the target without obstruction, and there is an effective distance range for its detection (the effective distance of the fluorite camera's fall detection is within 8 meters, and the optimal distance is 4 - 6 meters). <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The female lead is called Su Yiyao, the male lead is called Fu Sihan, the name of the TV series and novel
He recommended a few novels. " The Little Playboy in the Entertainment Industry " was a modern romance entertainment star genre written by He Jianxin. The female protagonist, Lin Su, wrote novels part-time in university and was "forced" by readers to become a screenwriter after graduation. She was smart and persistent in being soft on the outside but strong on the inside. The male lead, Fu Chenhui, was calm and meticulous. He doted on the female lead. The female frequency is reborn, the update is slow but worth chasing. Young Master Gu's Movie Queen's Dainty Wife, a modern romance by Xu Lulu. The female lead, Su Mian, entered the script and became a cannon fodder female supporting character. She could be cute, cheap, and coquettish. The male lead, Gu Junyan, was a military ruffian. There was also the cute supporting role, the white ball. Some people liked and some people were sad. The male protagonist had a big contrast before and after, but the single protagonist felt that it was cute. He finished reading the chapters that had been posted in a day, and it was even slower. The Heavens Game Traveler was written by Ruo Qingfeng. After the car accident, the male protagonist, Rorschach, was sent to a different game world by the game system. However, there was a problem. It was too gamified and did not expand enough for each world. 'The Eldest Daughter of the Rebirth' was a modern romance novel written by Jun Ruo Qingyan. The female protagonist, Su Weiyu, was reborn and became the richest man in the world. The male protagonist, Shen Yihan, was waiting for her. " What Immortal Are You Practicing?" It was a light novel written by Spring Lights. There were anti-routine and light comedy elements. The male protagonist, Liu Qing, traveled through the world of cultivation and was rewarded by pleasure. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Little Red Book SK2 Cleanser
SK-II was a typical cleansing milk that was suitable for sensitive skin and dry skin. It was very gentle and did not contain any fragrance or coloring. It would not irritate the skin and would not feel tight after washing. At the same time, it had a certain cleaning ability. It is a cream-like cleansing. There is not much foam when you rub it directly with your hands. If you like the effect of rich foam, you can use the foaming net to help foam. It had a light and pleasant smell, and it was one of the best among the acidic cleansing products. If the skin was sensitive during the season, this facial wash was a good choice. However, it was more expensive. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Vampires Exterminate the Legion
He recommended a few novels. Family Circle of Friends, an urban novel written by Shi Muyan. His new book, Life's Reincarnation 2001, was a wonderful novel. The protagonist Han Xiang could inherit trillions of assets after being reborn as a baby. The characters were very interesting. For example, the male lead Zhao Xuan was very handsome at the age of six. There were also characters with unique characteristics such as Shang Yuxuan. It was written smoothly, the plot was reasonable, it was not brain-dead, the length was short, and it could be read in a day. It was highly recommended. " Warcraft: Ashbringer ", a novel written by the game world. The story took place in the war-torn World of Warcraft, and the protagonist, Ashbringer, was super powerful. Although it has been broken, it has been restored. This book had to be read carefully. Without any major poison points, Warcraft players would be more touched. I Can Go Back to 1978, an urban novel written by Handsome Legend 007. Li Wenkai traveled between 1978 and 2020 after drinking. There were many interesting plots. The basketball world's Thanos, a sports novel written by a bulldozer under the basket. In 2004, when the Sharks swam east, Ye Heping came. He wasn't a tyrant, but he could make the Western Conference stars afraid. " Born in a Foreign Land ", a fantasy novel written by Extreme Cold. The heretical cultivator had wandered to the western world and set foot on the path of Dao again. The main character was cold-blooded and rational. His writing style was good. Although the update was slow, it was worth reading. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>