#"Oxidation-reduction Reaction" Trial Teaching Plan ##1. Teaching objectives 1. Students will be taught to understand the concept of oxido-reduction reaction from a macro perspective. They will be introduced through examples to trigger cognitive conflicts. They will be able to grasp the basic concept of oxido-reduction reaction based on macro substances. 2. To guide students to understand the nature of the oxidoreduction reaction from a microscopic perspective, to build a cognitive model, to use the atomic structure diagram to describe the microscopic process of electron gain and loss and deviation, and to use the "double-line bridge" and "single-line bridge" to analyze the electron transfer process, so as to improve their understanding of the oxidoreduction reaction. 3. With the help of concrete examples, the students will be able to understand the basic concepts such as oxidiser, reducing agent, oxidization reaction, reduction reaction, etc., and understand the philosophy of the unity of opposites contained in them and its important value in scientific research. 4. Cultivate the students 'ability to apply the basic model of the oxido-reduction reaction to solve practical problems. ##2. Difficulties in Teaching 1. ** Main point ** - Accurately understand the concept of the oxido-reduction reaction. - Learn to recognize the oxido-reduction reaction from a macro perspective (the rise and fall of the element's valency). - Able to understand the nature of the oxido-reduction reaction from a microscopic perspective (electron transfer). 2. ** Difficulty ** - Understanding the nature of the oxido-reduction reaction from a microscopic perspective. ##3. Teaching Method Lectures, conversations, and group discussions. ##4. Teaching process ###(1) Introduction of revision 1. Question: According to the material classification standard, classify iron dioxide and copper dioxide. According to the material transformation law, convert them into metal elements and write the reaction equation. According to the basic reaction type, classify the reaction. 2. Guide students to think as they answer: When the existing standards cannot accurately classify responses, new dimensions will appear. ###(2) New Knowledge Exploration 1. ** Observe and summarize the characteristics of the oxido-reduction reaction ** - Question: Observe the reaction between carbon dioxide and iron dioxide. From the perspective of oxygen gain and oxygen loss, what kind of reactions do these two reactions belong to? What were the characteristics of these two reactions from the perspective of elemental valency? - On the basis of the students 'answers, he concluded that the chemical reaction of oxygen gain and oxygen loss was called the oxidoreduction reaction, which was characteristic of the rise and fall of the chemical valency of the elements. - Another question: Write down the equation for smelting copper by "wet smelting" and analyze if it is an oxido-reduction reaction? To further summarize, the chemical reaction of the element's valency change was the oxidoreduction reaction. - What were the four basic reaction types that they learned in middle school? What was the relationship between the oxido-reduction reaction and it? Guide the students to use the Venn diagram to represent the relationship between the two. 2. ** Exploring the Nature of Oxidation-reduction Reaction ** - Student activity: Using the formation of NaCl2 as an example, explore the nature of the oxido-reduction reaction based on the atomic structure. The teacher guided the students to think about the relationship between the atomic structure, the gain and loss of electrons, and the deviation of electron pairs, so as to understand the microscopic process of the oxidoreduction reaction. ###(3) Class Practice Give some chemical reaction equations for students to judge whether it is an oxido-reduction reaction. If it is, point out the oxidiser, the reducing agent, the oxidiser reaction, and the reduction reaction. ###(4) Summing Up 1. Guide the students to review the concept, characteristics, and nature of the oxidoreduction reaction. 2. It emphasized the relationship between the concepts of oxidiser, reducing agent, oxidization reaction, and reduction reaction. ###(5) Assignment 1. Basic homework: Complete the relevant exercises in the textbook and consolidate the basic concepts and judgment methods of the oxidoreduction reaction. 2. "Additional homework: Find examples related to the oxido-reduction reaction in your life and analyze the oxidiser, the reducing agent, etc. #Reflection on the Trial Lecture of Oxidation-reduction Reaction ##1. Strengths 1. ** Various teaching methods ** - The revision method was used to consolidate the knowledge that the students had learned before, and by triggering cognitive conflicts, the content of the new lesson was naturally introduced. The combination of lecturing, conversation, and group discussion helped to mobilize the enthusiasm of the students, making the classroom atmosphere more active, and also conducive to the students 'understanding and mastery of knowledge. 2. ** Clear logic ** - In the new knowledge exploration segment, he gradually explained the characteristics of the oxidoreduction reaction to the essence. First, the students would be taught to understand the characteristics of the oxidoreduction reaction from the macro perspective of the change in chemical valency. Then, the students would be guided to explore its essence from the micro perspective. This would conform to the cognitive laws of the students and help build a complete knowledge system. 3. ** Focus on interaction ** - In the classroom teaching process, through questions, group discussions and other ways to interact with students, give students timely feedback, can guide students to think actively and participate in the classroom. ##2. Deficiency 1. ** Time Control ** - During the student activity segment, due to the fact that some students had forgotten the knowledge of atomic structure, it took more time to explore the nature of the oxidoreduction reaction. As a result, the final classroom practice and summary segment were a little rushed, and the students were not given enough time to think and summarize. 2. ** Difficulty Breakthrough ** - Although the students were guided to understand the nature of the oxidoreduction reaction through examples, it might still be difficult for some students with weak foundations to understand. In the future, more intuitive demonstration or analogy could be added to help these students better break through the difficult points. 3. ** Expansion and Extension ** - In the homework assignment section, although there was an expansion assignment, there was not enough hint on how to guide students to analyze the examples of oxidoreduction reactions in their lives. In the future, he could give a simple example of how to analyze life examples in class so that students could better complete their homework. Read more exciting novels for free
Ocean Universe Master and Little Narcissus had a complicated relationship. After Sea Universe Master's lover Ning Xingmou died, he became Zhan Lin. During his time in the Scale Race, he was just a bystander and occasionally helped the righteous path to scam the Scale Race. He then met Little Water Deity, who had a familiar feeling that attracted him. He later discovered that Little Water Deity was the reincarnation of his lover, Ning Xingyue. For Little Water Deity, he had betrayed the contract with the Scale Tribe and even risked his life without regret. On Little Water Deity's side, she was suspected to be the reincarnation of her Starry Eyes. She had foreshadowed the beginning of her relationship. She appeared in the Matriarch Temple and once looked forward to the Night King (the master of the sea). The things that the master of the sea did for his lover made him Little Water Deity's idol. She was inextricably linked to the Condensed Star Eye, and many people hinted that she was the reincarnation of the Condensed Star Eye. Her righteous path identity was also related to Sea Universe Master, this caused her to fall into a dangerous situation. Hurry up and click on the link below to return to the super classic "Lord of Mysteries"!
The following are some novels that have major character changes (like a passerby becoming a goddess): - "Reborn as a Love Rival's Wife": The female lead, Su Jian, was originally a loser youth. After a car accident, she became a woman and became the contract wife of a "cultured scum" love rival. The female lead looked like a soft girl, but she was a man. After experiencing the transformation from male to female and the subsequent development of the story, her image and living conditions had changed greatly. - "Night-Luminescent Pearl": The female protagonist, Lin Ximin, became a gangster at the age of 14. After the appearance of the Night-Luminescent Pearl and a car accident, her life trajectory and gender changed. Later on, she walked the road of revenge after being reborn from the ashes. Her identity and image had changed greatly. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
At present, he only knew that Jing Jingliang had created the historical type of " Three Kingdoms: My Father is Zhao Yun ", as well as " The Legend of the Great Qin's Soldier "," New Three National Laws " and other works. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The main difference between the drawer slide resistance and rebound models was in terms of function. Damping slide rails had a cushion effect when closed, while the rebound slide rails did not need to be equipped with a handle, and could be automatically ejected by pressing the drawer panel. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Here are some simple gifts for mothers in kindergarten: 1. ** Handmade greeting card **: Draw a flower pattern on the cardboard and cut it out. Write a blessing on the round piece and stick it on the flower. Use a small piece of paper to connect another circle to cover the blessing. Roll out the paper stick to make the flower stem. Use the green cardboard to make the leaves. Finally, paint and decorate. 2. ** Small gift **: Write what you want to say on a piece of paper that is slightly narrower than the gap cut by the tape roll. Roll it up and stuff it into the tape roll. Then wrap it in a circle with a beautiful material paper. Fold it on both sides and tie it with a ribbon. trim the extra part and decorate it. 3. Carnation Card: Cut out the cardboard to make a basic greeting card. The cover is made of foam cushion to show the thickness. Fold the carnation petals with a small piece of paper, fold the square paper three times along the corner, fold more petals and paste them together (the first layer has 5 petals, the second layer has 6 petals, and the third layer has 5 petals), flip the green petals to make the calyx, and finally fix the finished flower on the greeting card. 4. ** Tulip Flower **: Use pink origami, add blush in the middle, flip it over to carry out the basic folding, fold it in half along the four edges, open the fold, cut open the two sides and fold the small triangle, cut out a small hole in the middle, open the small triangle, paste it and press out a crease to arrange the petals, then fold the leaf part, roll it out into a paper roll to make a flower stem, and combine it into a tulip flower. You can fold a bunch and give it to your mother. 5. [Self-made potted plant: You can use non-woven fabric and other materials to make potted plants as gifts for your mother.] 6. ** Handmade Flowers and Greeting Cards **: Make holiday greeting cards, potted plants, and design flowers by hand, and attach the words you want to say to your mother. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Chu Zhenjiang was the wife (queen) of King Zhao of Chu. She was the princess of the State of Qi. She might have married King Zhao of Chu through political marriage. Before King Zhao of Chu went on a trip, he had agreed with Zhen Jiang that if he sent someone to pick her up, he had to bring a talisman. Once, when King Zhao of Chu sent someone to pick up Zhen Jiang, he forgot to bring the talisman. At that time, Zhen Jiang was in danger of flooding. Although she was in danger, she refused to leave because the person did not have the talisman. In the end, she drowned in the flood. Her story reflected her faithfulness and righteousness. It was included in the Eight Virtues of Women in the Biography of Women. It also reflected that the State of Chu in the era of King Zhao of Chu was very particular about virtue. The original novel of the TV series "The Unique Empress of Generals" was called "The Rebirth of the Poisonous Empress of Generals." The original plot was equally exciting. You can click on the link below to read the original novel.
Based on the current information, he only knew that there was a work called Fairy, You Have a Bad Omen. The original work was Floating Clouds in Jiangnan, but he could not provide more detailed information about this novel. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Here are some ways to improve your listening and writing skills in high school: ** 1. To improve your English listening ability ** 1. ** Accumulated vocabulary ** - Increasing your vocabulary is the foundation of improving your listening ability. A rich vocabulary allows students to quickly react to the meaning of words when they hear them. For example, he had to constantly memorize words in his daily study, including their spellings, pronunciations, and meanings. 2. ** Listening, speaking, reading and writing combined ** - These four skills needed to be balanced. You can't just focus on listening in isolation, but you have to relate listening to speaking, reading, and writing. For example, when reading an English article, you can try to read silently and simulate the pronunciation in your mind at the same time. This will help improve your listening comprehension of words and sentences. When writing, you can listen to some English materials on related topics first to obtain inspiration and expressions before writing. 3. ** Tailor-made training ** - ** Listening ** - Listen to English for a long time, create an English environment, and familiarize your ears with English. For example, you can listen to English news broadcasts, English songs, or watch English movies every day. You don't have to understand every word and sentence, but you have to adapt to English pronunciation, intonation, speed, and so on. - ** Listen attentively ** - Try to listen to every line of the character clearly, pay attention to the pronunciation and the way you read it. For difficult sentences, you might need to listen to them many times. For example, when listening to a short passage in English listening materials, you should first understand the general idea, then listen to the parts you didn't understand repeatedly until you completely understood them. 4. ** Using a variety of listening materials ** - You can choose to listen to English songs. The lyrics and melodies in the songs help you remember words and sentence structures. Watch English movies and improve your listening comprehension ability through the scenes and conversations in the movies. It is recommended to start with the Chinese and English subtitles, gradually transition to only reading the English subtitles, and finally close the subtitles and listen. Listen to English news regularly. The vocabulary and expressions in the news are more formal and standardized, which helps to improve your listening comprehension ability on different topics. ** Second, improve your English writing ability ** 1. ** Familiar with style and subject matter ** - The writing styles of high school English were often narrative, explanatory, argumentative, and practical. Narrations should be clear about time, place, people, events, causes and results; Exposition should have scientific content, orderly structure and accuracy of language; argumentative articles should be mainly used to express views; practical articles should conform to a certain format, short and concise. At the same time, he had to understand the source of the writing material. - The source of the subject matter included "One Point and Four Directions"(the basic points of "Virtue and Cultivation of People","hot social issues, cultural inheritance and communication, philosophy of life and values, science and technology and innovation"), the theme of the high school English textbook, and the writing theme of each Unit's Using Language. 2. ** Accumulate materials ** - From the daily textbooks and reading materials, he accumulated good words and sentences, commonly used expressions, and so on. For example, when reading an English article, he would copy down the beautiful sentences and phrases and try to use them in his own writing. 3. ** Imitation and Practice ** - Imitate excellent English essay examples for writing practice. He could start by imitating its structure and framework, then gradually imitate its language expression and logic. At the same time, he had to practice writing more, such as writing according to the textbook or the questions assigned by the teacher. He had to constantly revise and improve his composition, paying attention to details such as grammar mistakes and word spellings. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Chaoshan is a place rich in products. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Xiao Ze and Jiang Wu's novels were "Autumn Love"(urban novel). There was a plot where Xiao Ze was abandoned and the other party said,"You can just die here. I will never have anything to do with you again in my life". There was also "Spring Breeze My Heart"(science fiction novel), which was relatively novel. The words written by Jiang Wu were classic. In the novel, there would be such things as " Ha." There was also a series of urban novels by Xiaoze and Jiang Wu, which involved family relationships and other plots. For example,"When my father heard this, he turned his head to look at her and smiled in relief." Ciyue is also a good child. These few days, he has been thinking about his sister. He can't eat or sleep. It has been hard on him. In two days, your mother will be included in the genealogy and will be holding a sacrifice. There are many things to be busy with. Don't tire yourself out. Go back and rest well." Wait for the plot content. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>