How to write the high school biology teaching case design planThe following is the general method of writing a high school biology lesson design plan:
* * 1. Setting of teaching objectives **
1. * * Knowledge target **
- To clarify the biological concepts, principles, and laws that students should master. For example, in the teaching of genetic-related knowledge, students had to be able to summarize the translation and translation of genetic information. This required students to understand, master, or apply different levels of knowledge according to the requirements of the curriculum standards.
2. * * Ability Target **
- Cultivate the students 'scientific inquiry ability, such as observation, experiment, analysis of data, and the ability to make assumptions. For example, in the biological experiment class, students were taught to design experimental steps, analyze experimental results, and draw reasonable conclusions.
- To improve the students 'thinking ability, including logical thinking, critical thinking, and so on. For example, when learning the theory of biological evolution, he guided students to critically think about the rationality and limitations of different theories.
3. * * Emotions, attitudes, values, goals **
- To stimulate students 'interest in biology, for example, by demonstrating the application of biological science in the fields of medicine and environmental protection.
- Cultivate students 'scientific attitude and scientific spirit, so that students respect facts and have the courage to explore.
* * 2. Analysis of Teaching Materials **
1. * * Teaching Material Analysis **
- To determine the position and role of the teaching content in the teaching materials. For example, the content of a certain chapter was the foundation of the subsequent chapters, or it was the expansion and deepening of the previous knowledge.
- Analyzing the difficulty level, key points, and difficulties of the teaching materials. For example, the process of cell breathing was more complicated, and the three stages and reactions of oxygen breathing were both important and difficult.
2. * * Academic Analysis **
- Understand the students 'existing knowledge base. For example, before learning genetic engineering, students had already mastered the structure and function of DNA.
- Consider the students 'learning ability and habits. For example, some students were good at learning through experiments, while others were more suitable for theoretical deduction.
* * 3. Choice of teaching methods **
1. * * Teaching Method **
- It was suitable for explaining the basic concepts, principles, and other abstract knowledge of biology. For example, when explaining the structure and function of cells, students could quickly acquire knowledge through teaching methods.
2. * * Exploration Method **
- As for some inquiry-oriented content, such as exploring the factors that affect the activity of the protein, the students could be guided to learn by asking questions, making assumptions, designing experiments, conducting experiments, and analyzing the results.
3. * * Discussion Method **
- Use it when learning controversial or brainstorming material. For example, when discussing the reasons for biological evolution, students were allowed to express their own opinions and cultivate their thinking and expression skills.
4. * * Visual Teaching Method **
- Using real objects, models, and other means. For example, when explaining the structure of human organs, the use of human body models or multi-media animation to enhance the students 'intuitive feelings.
* * 4. Teaching process design **
1. * * Introduction Stage **
- Through life examples, problem situations, experimental phenomena and other ways to arouse the students 'interest and introduce new lessons. For example, the phenomenon of bread fermentation in daily life could be used to teach cell breathing.
2. * * New lesson **
- According to the logical order of the teaching content, he explained the knowledge points step by step. It could be done in a whole and then in parts, from shallow to deep, and so on. For example, when explaining the structure of an ecosystem, he would first introduce the concept of an ecosystem and then explain its components.
- Using a variety of teaching methods to teach, such as experimental demonstration, group discussion and other activities in the teaching process.
3. * * Class practice **
- Design an appropriate amount of practice questions so that students can consolidate their knowledge in time. The types of practice questions could include multiple-choice questions, fill-in-the-blank questions, short-answer questions, and so on. There had to be a certain degree of difficulty.
4. * * Class summary **
- Guide the students to review the main content of this lesson, summarize the key and difficult knowledge, and help the students build a knowledge system.
5. * * Homework arrangement after class **
- The assignments that were related to the content of the class could be written assignments, exploratory assignments, or reading assignments. For example, ask students to look up information on the current state of conservation of biological species and write a short essay.
* * 5. Teaching Evaluation Design **
1. * * Formational Evaluation **
- During the teaching process, the students 'learning situation was evaluated in a timely manner through classroom questions, group discussion performance, classroom practice, etc., so as to adjust the teaching strategy.
2. * * Final evaluation **
- Through unit tests, final exams, and other methods, the overall evaluation of students 'learning results was carried out to understand the degree of students' mastery of knowledge and the level of ability development.
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Changing the Counterattack HammerThe following is the tutorial for replacing the 1416 counterattacking hammer:
##1. Preparing
1. ** Confirm hammer model and specifications **
- Different models of counter-attack hammers have differences. To determine the exact model and specifications of the required hammers, you can refer to the equipment manual or contact the manufacturer for relevant information.
2. ** Prepare the required tools and spare parts **
- Prepare basic tools such as screws, wrenches, impact drills, and make sure there is a suitable new hammer for replacement.
##2. Remove the old hammer
1. ** Location **
- The old plate hammer was usually located above the 1416 impact breaker's runner, and its position could be determined by observing the internal structure of the equipment.
2. ** Dismantling **
- Use a wrench and other tools to disassemble the bolts and nuts that fix the old hammer. Be careful not to use too much force during the operation to prevent damage to other parts.
3. ** Take out **
- Remove the old plate hammer from the turbine and clean up the gravel and debris left on the turbine.
##3. Mount the new hammer
1. ** Check **
- Check if the new hammer meets the specifications of the equipment, including size, materials, and so on. If there are any unqualified parts, they need to be replaced in time or contact the supplier to deal with them.
2. ** Cleanse (if necessary)**
- He rinsed the new hammer in clean water to remove the oil and impurities on the surface.
3. ** Assembly **
- Mount the new plate hammer on the rotorand fasten it with bolts and nuts. Screw the bolts and nuts in the diagonal direction to ensure the accuracy of the plate hammer and the rotor.
4. ** Grease **
- Smearing a suitable amount of oil or grease on the new hammer to reduce wear and prolong its service life.
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