The following is a reflection on the teaching of mixed operations in second grade mathematics: ##1. Use of Knowledge Transfer 1. ** The use of old knowledge ** - When teaching mixed operations, the students 'existing knowledge should be fully taken into account. For example, the students had already mastered the addition, deduction, multiplication, and division of the four basic operations, and they might have been exposed to simple step-by-step mixed operations before. For example, when teaching a mixed operation that included multiplication and addition or division and addition, one could make use of the students 'existing operational knowledge to let the students first carry out calculation exercises, such as adding + and × symbols between numbers, and then adding-and div-symbols to calculate, and explain the order of operations, so as to consolidate the knowledge of the order of operations related to mixed operations. - In the teaching of the two-part hybrid calculation with parenthesis, students could use the knowledge they had learned before to transfer the knowledge and calculate correctly by creating new situations. 2. ** Promotion of migration ** - In practice exercises, such as the "do it" exercises, students should make use of the positive transfer of knowledge to communicate the connection between old and new knowledge. When the students mastered the order of calculation of multiplication and division before addition and substitution in the formulas without parenthesis, they would be able to understand the order of calculation of the formulas with parenthesis through the previous knowledge transfer. ##2. The importance of introducing a situation 1. ** Arouse interest and connect with life ** - Mathematics originated from life, and the introduction of suitable situations could stimulate students 'interest in learning. For example, he could use the travel situation map in the book or the situation in the library reading room to connect with the student's life experience and naturally raise mathematical problems from the situation. This way, the students could experience the connection between mathematics and life, and it would be easier for them to actively mobilize their existing life experience and knowledge to solve problems. - For example, using the tourism situation map in teaching to raise the two-step calculation of multiplication, addition, and multiplication, or the calculation of the number of people in the library reading room could make students understand the meaning of mixed operations in the process of solving practical problems. 2. ** Enhances the understanding of operation order ** - The creation of the situation would help the students understand the order of operations. For example, when solving a practical problem in a situation, students could more intuitively understand the order of operation of multiplication and addition (deduction) before addition or deduction. ##3. Dealing with the conflict between new knowledge and old knowledge 1. ** Using cognitive conflict to teach ** - In the process of solving problems, due to the differences in students 'cognitive level, different methods and ideas of solving problems would appear, which would produce contradictions between new knowledge and old knowledge. For example, when calculating a formula that had both addition and multiplication, the student might calculate it from left to right, which would conflict with the correct order of mixed operations. This was a good time to teach the order of operations. Students could be arranged to explain and communicate with each other at the same table to let the students recognize the correct order of operations. For example, they had to first use multiplication to calculate the number of people in the group and then add the number of people who were not in the group. 2. ** Teacher's guidance is appropriate ** - In the process of guiding students to discover the order of operations, the teacher's guidance should be moderate. For example, when dealing with certain problems, if the teacher gave too much guidance, it would affect the effect of the students 'independent exploration. When solving problems, they could let the students discover the order of operations in the communication and cultivate the students 'ability to explore independently. ##4. The flexible use of practice questions 1. ** Choosing a topic based on typical mistakes ** - In the design of practice questions, the type of questions could be selected according to the typical mistakes made by the students, such as the order of operations, calculations, solving problems, and correcting mistakes. - The advantage of doing this was that the problems came from the students. When the students solved these problems themselves, they could correct their own mistakes and experience the joy of helping others solve problems. From then on, they could develop a good habit of being serious and careful. Read more exciting novels for free
The Four Flying Apsaras, a classic flying mural of the Tang Dynasty, was located in Cave 320 of the Mogao Grottoes in Dunhuang. Judging from the layout of the picture, the four Flying Apsaras were located above the Middle Hall Master's Amitabha's canopy and were distributed in two rows. The first two Fairies were in a symmetrical position, scattering flowers with one hand and receiving with the other, while the last two followed behind, also scattering flowers and receiving. These flying fairies were graceful, and their streamers were lifelike. Together with the flowing clouds, they formed a dynamic picture. Coupled with the gorgeous colors, they vividly displayed the wonderful state of the Western Paradise. In terms of value, it had a very high artistic value and historical value. It displayed the typical characteristics of the flying murals of the Tang Dynasty and was a precious cultural heritage. It was also an important material for studying the mural art and Buddhist culture of the Tang Dynasty. It had important collection significance and ornamental value. "Legend of the Flying Apsaras" is equally exciting. Everyone is welcome to click and read it!
He recommended a few super interesting novels. " Rebirth 60 Taming Husband " was a modern romance novel written by Ni Ni. After the female devil Qu Changge went on a war, she put it on Little Pitiful's body. Her hands were itchy when facing someone who could torment her. " Descendant " was an ancient romance novel written by Chen Sha Ruohua. The military intelligence agent transmigrated into an ancient lady, and the legitimate daughter became an abandoned child. She wanted to take back everything. " Young Master Li's Soft and Adorable Wife " was a modern romance novel written by Lu Qingyi. Su He, a soft and adorable amnesiac girl, was picked up by Li Chu. In fact, she was a big boss with a hidden identity. The two of them had sparks in their interactions. " The Self-Cultivation of Green Tea " was a fantasy romance novel about Ah Chao eating millet. Miss Qu, who wanted to be a green tea, was brought to another world by a child after receiving her retribution. " Immortal Cultivation Begins from Gathering Qi and Creation " was a Xianxia novel written by Chu Li. Li Yuan had the Furnace of Creation's Qi Gathering Mantra, which allowed him to gather spiritual energy to create treasures. His creativity was not bad, and his writing was of high quality. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
I recommend " The Last Days of the Five Dynasties ", a historical novel written by Shawshank. At that time, the Great Tang had already passed away, the warlords were in chaos, the Five Dynasties and Ten Kingdoms were in chaos, and the Khitans were still eyeing them. The chaotic world produced a hero, and the protagonist planned the world in the light of swords. " Rich and Prosperous Emperor " was not bad either. It was an ancient romance novel written by Xiao Moumou. The female protagonist transmigrated into a princess. She did not fight in the palace or fight with others. She focused on the power of the court. She used each other to develop true feelings with the Emperor's father. In the end, she even faked her death and traveled far away. She did not have a male protagonist but was extremely inspirational. 'Zero Corrosion Witch' was a light novel written by Feng Jingyu. The social animal Yuan Xi turned into a young girl, Yuan Xi. She had spiritual power. The ghost house, text messages, and games allowed her to enter the darkness of the spirit world. At the moment when Linyang City was facing zero corrosion, was she going to save or destroy it? 'The Most Vicious Man in the Dream of the Red Chamber'. The main character dressed as Jia Lian and became ruthless when he didn't want to die. He raided his family and beheaded his officials. He started to reform the Jia family and even the world by beating up Wang Xifeng. Mr. Lover at the Tarot Club of Mysteries. Klein was the best cat to write a fantasy novel. The Lord of the Mysteries doujinshi, the male protagonist transmigrated through the Marauder Path. The plot was good but the updates were unstable. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The songs written by Lee Zongsheng have been sung by many celebrities. The following are some examples: Chen Shuhua sang "Time to Wake Up"; Zhang Xinzhe sang "Love Like Tide" written by Lee Zongsheng; Xin Xiaoqi sang "Comprehension"; Karen Mok sang "Cloudy Sky"; Kim Ji-juan sang "Crossing the Ocean to See You"; Lin Yilian sang "Don't Care Who I Am"; Liang Jingru sang songs from Lee Zongsheng's album producer; Zhang Xinzhe sang the songs in the album that Li Zongsheng participated in; Zhou Huajian, Luo Dayou, Zhang Zhenyue and Li Zongsheng sang related songs together in the "Long-Line" band; In addition, Zhao Chuan sang "I'm a Little Bird" by Li Zongsheng as the music producer, and Zhang Aijia sang "The Price of Love" by Li Zongsheng as the music producer. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The following are ten classic sentences about Canhua selected from ancient poems: 1. "Scattered Duoyi grass, fragrant. A single branch on the low eaves still occupies a full house of spring." 2. " The river's head is intoxicated by the setting sun, but I return to the flowers crying bitterly. I'm sad that spring has gone again, and the green clouds and fragrant grass are still attached to each other." 3. "The sun is about to set on the Dark Cloud Mountain, and the post pavilion dismounted to face the withered flowers. Ever since I was expelled from the West Prefecture, I've been away from home every time it's flower time." 4. "Ten days of thick fragrance is a year's journey, the east wind is early and the eyes are bright. The low branches are like mud and people are drunk. Don't say that heartless people are sentimental." 5. "The morning sun is late, and the color of last night is still deep. After all, it will eventually fall, which is sad for the past and the present. Where will I see you next year? Bees and butterflies are merciless, and the lingering fragrance is even more difficult to find." 6. "In the evening, the thousand flowers have already thinned, and the wind still wants to destroy the fragrance. Wang Changjin lives on the east side of the wall. Unfortunately, Canhong has taken the second flight." 7. "In the small courtyard, the flowers in the silver vase have fallen, and Mount Li has awakened Concubine Yang. The tears of ecstasy fell from the rain of Yan Zhi, leaving behind the old dance clothes of Nishang." 8. "In the middle of spring, the rain and wind are mixed, and the wild almonds and official peaches are everywhere. This tree occasionally leaves two or three flowers, lingering in the setting sun." 9. "Yesterday, I saw flowers blooming on the branches, and today I see the green pond blooming. Don't be heartless and hate the east wind. When you have the intention, you will be grateful." 10. "The shelves are full at the beginning, leaving only a few springs. A light breeze blew on the southern road, and the setting sun touched the riverside. The shadow of the curtain is faint, and the moon is bright. The fragrance of the car disappears the dust on the road. Don't fly away when you're drifting, there's someone in the courtyard who's worried." The novel "Listening to the Rain in Green Bamboo and Watching the Egrets" is equally wonderful. Everyone is welcome to click and read it!
I recommend " Please Call Me Electro-Voice Girl ", a light novel written by Three-inch Shen Xiang. It's a funny and sarcastic novel. Lolita broke into the center of the electronic music circle when she talked about how a tune master with an annual salary of hundreds of millions could create strange sounds into music. There were many characters such as the main character Tang Miaoyi. The book list commented that the rare electronic theme was interesting, but there was a small problem in the middle. It seemed that the author recommended that the electronic theme was not bad, and the audio novel could listen to songs. The author was a salty man. " Experience in the Magic World " was not bad either. It was a fantasy novel by Reverend Purple Dust. Raymond had transmigrated to the Dragon God Continent to become a down-and-out old mage. He had wanted to live a few more years to break through to level-seven and extend his lifespan, but in the end, he had become the God of Creation. " Building a Longevity Family from a Abandoned Spirit Root ", accompanied by a fantasy novel written by a naughty child. There was the Su family, the most powerful long-lived family of the human race. The three ancestors had stories, and there were many supporting actresses. " I'm Really a Planet " was a science fiction novel with a sour taste. The main character became the planet's will, wanting to nurture life and let the planet shine. " Spirit Ascending " was a fantasy novel written by Immortal Black Pepper. The pet text had a sense of mystery and a novel setting. After the protagonist Ye Hanjun transmigrated, he awakened his authority and entered the path of godhood through the contract with his family spirit. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
"So" could be used to describe the state or degree of an object. It could also be used to describe the characteristics, state, degree, etc. of an object that was very prominent or extraordinary. Sometimes, it could also be used to express some kind of emotion or amazement. In the structure of "so that", there are two forms of "so that" and "such that". The sentence pattern of "so that" is: so+ adj.+ That (so followed by an adjective or adverb), as in "She is so cute that everyone likes her." The sentence pattern of "such…that" is: such+(adj.)+ n.+ "It was such a fine day that we went out for a walk." She is such a good teacher that we all love her. She is such a good teacher that we all love her. She is such a good teacher that we all love her.”In addition, when "de" was used as a mood particle, it was located at the core of the sentence to express the narrative tone, indicating that the fact was so. This could also reflect the usage characteristics of "so" when expressing a fait accompli. The novel,"The Morality of the Past", is equally exciting. Everyone is welcome to click and read it!
The following are some of the male celebrities who were mentioned to have "ugly photos" when they were students or had a big difference from their current image: - Wang Yibo: When I was in school, there was a photo that went viral on the Internet and was said to be a little rustic. However, some netizens came forward to deny the authenticity of the photo because it was obviously different from other photos of the same age group when I was studying in Korea. - Dunlun: In the photo from high school, he was wearing a black shirt. He looked very young and a little rustic. - [Xiao Zhan: When I was a student, I was chubby. It's different from my image after I became a male idol.] - Lin Xin: He was chubby when he was in school, but there was no obvious change between his student days and now except for his fat and thin. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
I recommend Warcraft Hero, a virtual online game novel written by Cang Lang. This was a real World of Warcraft, where all the classes were the main characters. There were team coordination, PK, recruitment, and the city system. One could experience the thrill of grinding experience, equipment, and dungeons. Inspired by World of Warcraft and Invincible Heroes, over 3 million words completed. The writing style was humorous, and the reinterpretation of magical beasts was very eye-catching. There was a portrait of life and social irony. Although it was an old book with an early style, it paid attention to details, but the writing was average and the second half was not very good. However, given the lack of good books on the subject of magical beasts, it was still worth collecting. The recommendation index was very high. It had hot-blooded, humorous, romantic elements, and a strong sense of immersion. It was a beginner's book for many people. Although it had a bad ending, it was still a good book. There was also The Final Summoning of Warcraft, a fantasy sword and magic novel by Best Man. The main character struggled in the other world and had many choices. It was a good farming style, with magical beasts and night elves as the background. The old book's writing style was average but the content was good. The protagonist's halo was not too much. The system had a big brain hole and recovered after being 404. Warcraft: World of Warcraft was not bad either. It was a gaming and e-sports novel written by Guangying Media. It was a very old completed work. It had been written for 12 years and had entered the palace twice. This was an esports article for Warcraft 3. Everyone could understand it. Even if they didn't understand Warcraft 3 and esports, it was still worth reading. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
In the lyrics of " That Girl," the expression " that girl used to smile sweetly " conveyed a kind of reminiscence and nostalgia for the past love. Looking at the song as a whole, the girl's sweet smile was a deep impression in the boy's memory. In this love story, the boy didn't take the girl's feelings into consideration and disappointed her again and again. In the end, the girl left. After that, the boy began to regret it. The girl's sweet smile became a deep memory symbol of his lost love. It symbolized the good times of love and also expressed the boy's regret and longing for losing love. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>