[Junior high school connection] What is the difference between junior high school chemistry?"Paragraphs to improve cheats" are here!

For many students who are about to enter the gate of high school, chemistry is a subject full of interest and worry. How to use the summer vacation to allow students to quickly adapt to the rhythm of high school chemistry?

Today, we invite Bei Yanhong, the head of the teaching and research team of the Chemistry Group of the Jilin Provincial Experimental Middle School, to give guidance for the senior high school students from the three aspects of cognitive entry, method strategy, and holiday preparation.

Bei Yanhong

Member of the Communist Party of China, senior teacher, backbone teacher in Jilin Province, Jilin Province Teaching Elite, Advanced Individual of Education Society of Jilin Province, member of Changchun Talent Talent, a graduate instructor of the Northeast Division, Excellent Instructor of the National High School Chemistry Olympics, Jilin Provincial Experimental Middle School Chemistry Teaching and research team leader. The experimental class has 15 years of teaching experience, the class teacher has worked for 15 years, and the competition counseling work for 10 years. He has won the tenth champion of the Jilin District of the National High School Chemical Competition for the school. He presided over and participated in four national and provincial topics. More than ten papers were published and awarded in provincial and municipal publications. He won the first prize and special award of the on -site class of the new curriculum high -quality lesson (Northeast District). In Jilin Provincial Teaching and Research Activities, they have made special lectures and demonstration courses. In the new curriculum reform, new textbooks are studied in new curriculum reforms, taking root in classrooms, and a certain leading role in teaching and teaching and research.

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Introduction ------- Understand Chemistry

Seemingly abstract, but the Chemical Association leads you through magical experimental phenomena to perceive the change and transformation of the material! The Chemistry Association allows you to feel everywhere that human food, food, housing and transportation, scientific and technological development, many new discoveries, and new creations are closely related to chemistry!

Secondly, we must understand the differences in the study content of the junior high school chemistry. You have to look at chemistry and learning chemistry with continuous advanced iteration and changing vision at all times!

Junior high school chemistry: The enlightenment stage of perception of chemistry, the substances and changes in contact are relatively simple, and it is easy to understand memory. There is a preliminary understanding of the differences between macro and micro, and the principles involved are relatively superficial. Students have initially established a classification and particulate views. They have low requirements for depth of thinking.

High school chemistry: The complexity of material and changes is upgraded, the knowledge is stronger, and the establishment and formation of chemical concepts, cognitive perspectives, and thinking methods is more focused on the establishment and formation of the principles, structure and organic chemistry. There are higher requirements.

In short, compared with junior high school, high school chemistry has been significantly upgraded in terms of knowledge, abilities, and methods. It is required that students are required to rise from the problem to solve the problem to solve the actual problems, pay more attention to practical applications, and highlight the value of chemical disciplines.

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Methods ---- Thinking · Concept · Law

1. Pay attention to the establishment of the concept of discipline and form a cognitive perspective of chemistry

The objects of chemical research are material and changes. There must be many discipline concepts in high school learning. If the essence is found, it is necessary to study from the atom and molecular level, establish a particle view, and so on.

These concepts may not understand its connotation now, but they must learn to follow the teacher's thinking. He is talking about a gas preparation process, but it may actually be passing a cognitive framework. He is analyzing the essence behind a phenomenon , But it may be penetrating a concept and method!

2. Pay attention to the formation of chemical thinking

High school chemistry has increased the training of thinking. Learn to see the essence through phenomena. Through data, the depth of thinking is gradually formed in the collision of various questions and various cognitive conflicts in the learning process. Clarifying the ins and outs of the formation of knowledge is more valuable than the final conclusion of only remembering knowledge. You have to resonate with the teacher with the same frequency, focus on the result, and understand the process! Because it is an important process to promote the formation of chemical thinking and gain potential abilities!

3. Pay attention to the laws and methods, it will be "king"

Any discipline talks about laws and methods. Different stages, different requirements, students must experience the differences, focusing on applications, not simple memory.

The laws and methods are derived from the refining of many problems, and the solution to many problems. Their value needs to be reflected in the application! So if you master one, you must actively use "one" to transform into three! Law and methods, back without puzzlement, back without knowing, that is meaningless sentence. Memory is just the intermediate method, just from the bridge learned.

4. Develop good learning closed -loop and learning habits

Facing the Fa varies from person to person. In the face of new knowledge, there are usually key four rings: listening-note-practice-reflection and induction. After class, practice in time, do not walk through the field, master the purpose. In reflection and induction, refine the essence and do more with less!

Of course, the most precious point is to always maintain interest in the discipline!

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Holiday warm-up article ---- Connect

1

Students who are relatively weak in junior high school chemistry can focus on reviewing the nature of "acid -alkali salt" and the related knowledge of elementalized price, and do a good job of connecting the first part of the high school learning content.

2

Reading self -study high school chemistry textbooks, promoting the directory, experience the knowledge framework of high school chemistry, and clearly promote the study of what logic will be promoted to facilitate the gradually realization of knowledge.

3

Multi -dimensional perception of chemistry.Learn virtual perception: Give full play to the imagination of micro -space, and learn to disassemble into a micro perspective to "see" and understand.Pay attention to intuitive experience: there are rich learning resources on the Internet, you can even buy home experimental supplies. You are unknown, curious, you can have a way to get an intuitive experience, watch the video of chemistry experiments, and see all kinds of curiosityThe effect of chemical changes, can you open your close contact with chemical changes from the kitchen condiments and the exploration of cosmetics.Multi -dimensional broadening the horizon and perceiving chemistry is ubiquitous.In short, learning chemistry requires a pair of wisdom eyes, and even becomes perspective. It is necessary to observe delicateness and learn rational analysis!Recommended views of popular science videos jointly created by the Chinese Chemistry Society and the Beautiful Science Team.

Beautiful chemistry:

https://www.bilibili.com/video/bv1d54y1z73i

Reappear chemistry:

https://www.chemsoc.org.cn/popular/envisioning/a3315.html

Jilin Daily All Media Reporter Chang Linxiang

Review: Yuan Guanghong

Responsible editor: Lian Xinglian

Edit: Shi Tianhui

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