The Teaching Design Case of Mutation Breeding and Evolution in High School Biology
The following is a teaching design case of high school biological mutation breeding and evolution: ##1. Teaching objectives 1. ** Knowledge target ** - Students will be able to understand the types, structures, and characteristics of genetic mutations, the types of aberrations, and their applications in breeding, as well as the principles and characteristics of various breeding methods. - Master the main points of modern biological evolution theory and understand the comparison between natural selection theory and modern biological evolution theory. 2. ** Ability Target ** - Able to apply the breeding process to the experimental design of biological breeding. - He learned how to build a knowledge network and form his own knowledge system with the knowledge of mutation breeding and evolution. 3. ** Emotional goal ** - Through understanding the application of mutation breeding and evolution knowledge in life, students could experience the practicality of biology and stimulate their interest in biology. ##2. Difficulties in Teaching 1. ** Main point ** - Distinguish three types of hereditary mutations (gene mutation, gene reorganization, and aberrations). - Master the breeding process and be able to carry out relevant experimental design. - Deep understanding of modern biological evolution theory. 2. ** Difficulty ** - Understand the essential differences and connections between the three types of hereditary mutations. - The complicated links in the breeding process and the construction of experimental design ideas. - In modern biological evolution theory, there were abstract concepts such as the calculation of gene frequency. ##3. Teaching Method Teaching method, discussion method, question guidance method, and case analysis method. ##4. Teaching process ###(1) Introduction (5 minutes) By showing some pictures of creatures with obvious differences in traits (such as flowers of different colors, fruits of different shapes, etc.), ask the students how these differences in traits arise, guide the students to think about the concept of mutation, and then lead to the topic of mutation breeding and evolution in this lesson. ###(2) Knowledge explanation (25 minutes) 1. ** Mutated Part ** - gene mutation - Explain the molecular mechanism of genetic mutation, including mitosis, protocaryote fission, and viral DNA replication. It emphasized that gene mutation did not change the number of genes, but only the structure of genes. It explained the impact of gene mutation on traits through examples (such as sickle cell leukemia), including changing biological traits and not changing biological traits. At the same time, the characteristics of gene mutation and the relationship between its advantages and disadvantages and the environment were described. - Illustrate the types of genetic mutations (dominant and latent) and their patterns of expression. - genetic recombination - This paper introduced the concept of gene reorganization from both narrow and broad perspectives, focusing on the free combination of non-allele-like genes on non-homolog and the cross-exchange of non-sister chromatids on homolog during the process of Meiosis. The process of gene reorganization was analyzed through cell division diagrams. Students were asked to discuss the differences between gene reorganization and gene mutation in producing new traits. - chromosome variation - They introduced the types of structural aberrations (loss, repetition, reversal, and translocations) and numerical aberrations (euploids and aneuploids). Through examples (such as the polyploids of some plants), explain the application principle of mutation in breeding. For example, polyploids can increase crop yield and improve quality. 2. ** Breeding Part ** - The more common breeding methods (mutation breeding, cross breeding, haploid breeding, polyploid breeding, genetic engineering breeding, etc.) were explained in terms of breeding principles, methods, advantages, disadvantages, and scope of application. For example, mutation breeding could produce new genes and create new types of mutations, but the frequency of mutation was low and the direction was difficult to control. Crossbreeding could not produce new genes, but it was only a combination of original genes, but the operation was relatively simple. - Give some practical breeding problems, let the students discuss in groups and choose the appropriate breeding method, such as which breeding method should be chosen to obtain a pure spore in a short period of time, etc., to train the students 'ability to use knowledge to solve practical problems. 3. ** Evolution Part ** - This paper introduced the main contents of Darwinian theory of natural selection (over-reproduction, struggle for survival, genetic variation, survival of the fittest), and analyzed its contributions and limitations. - The main points of modern biological evolution theory were elaborated, including population as the basic unit of biological evolution, the concept of gene frequency and its calculation method, the raw materials for evolution produced by mutation and gene reorganization, the direction of biological evolution determined by natural selection, isolation as a necessary condition for speciation, etc. Help students understand modern evolutionary theories through examples, such as the formation of different ground finches on the Galapagos Islands. ###(3) Class interaction (15 minutes) 1. ** Group discussion ** - Give some controversial questions, such as "Is GM food safe?" and let the students discuss in groups. Each group would elect a representative to explain the group's views, and the other groups could ask questions and refute. The teacher patrolled the students during the discussion and guided the students to think about the problem from the perspective of mutation breeding and evolution. 2. ** Question and Answer ** - Students were encouraged to ask questions that they had encountered in the learning process. Teachers would provide detailed answers to students 'questions and focus on some common problems, such as common errors in gene frequency calculation. ###(4) Class summary (10 minutes) 1. Guide the students to review the main knowledge points of mutation breeding and evolution learned in this lesson, including the types of mutation, the comparison of breeding methods, the main points of modern biological evolution theory, etc. 2. Students were required to construct a simple knowledge network, linking the knowledge of mutation, breeding, and evolution. Teachers would select some of the students 'works to display and comment on, further strengthening the students' overall grasp of knowledge. ###(5) Class Practice (10 minutes) Some practice questions related to the content of this lesson were distributed, including multiple-choice questions, fill-in-the-blanks questions, and short-answer questions. Students could complete them independently in class. The practice questions should cover knowledge points such as gene mutation, gene reorganization, aberration variation, breeding method selection, modern biological evolution theory, etc. Through practice, the students should consolidate the knowledge they have learned in time. The teacher should check and feedback the students 'practice situation, and provide individual guidance for the students' problems. Read more exciting novels for free
High School Biology Gene Mutation Breeding Knowledge Points List
|knowledge points| particulars| |--|--| |The molecular mechanism of gene mutation| Genetic mutation can occur during amitosis, protocaryote fission, and viral DNA replication. Genetic mutation does not change the number of genes, but only the structure (from A→a or a→A, the essential difference between A and a is the change in the molecular structure of genes, namely the type, quantity, and order of the deoxynotides)| |gene mutation types| Dominant mutation (such as a→A, the mutation will show the trait); Recessive mutation (such as A→a, the mutant trait can be stably inherited after it is shown)| |The effect of gene mutation on traits| Change biological traits (mutation causes changes in codons, causing changes in protein functions, such as sickle cell leukemia); do not change biological traits (Soma cell genes may not change in reproductive cells, parent DNA base pair changes will produce hidden genes that are passed on to offspring, and the hidden traits will not appear when the offspring are mixed. Codon degeneracy may translate into the same aa, traits are affected by genes and environment, and in some environments, genetic changes will not appear.)| |The pros and cons of genetic mutation| The pros and cons depend on the living environment, and some are both harmless and useless.| |The probability of genetic mutation in cells| Germinal cells> Soma cells, cells with vigorous division> cells that have stopped dividing| |Requirements for Mutation Breeding Materials| Materials that can undergo cell division (such as germinated seeds, mice, etc.) meet the requirements, while materials that do not undergo cell division (such as dried seeds, animal sperm, etc.) do not meet the requirements.| |Genetic Reassembly| In the narrow sense, gene reorganization refers to the free combination of non-allelic genes on non-homological embryos and the cross-exchange of non-sister chromatids on homological embryos during the process of Meiosis. In the broad sense, it also includes genetic material changes caused by genetic engineering and plant somatic-cell hybrids. The different causes of B and B in the picture include gene mutation (interphase) or cross-exchange (prophase). When asking the root cause, consider gene mutation. If there is a hint of division, judge according to the hint.| |Comparisons of Chromatic Mutations and Other Mutations| (Not explicitly mentioned in comparison, temporarily omitted)| |Comparisons of Common Breeding Methods| (Not explicitly mentioned in comparison, temporarily omitted)| |Selection of breeding methods| Mutation breeding can produce new genes, but cross-breeding cannot, but it can realize gene reassembly. The simplest and most conventional breeding method is cross-breeding. Cross-breeding is used to concentrate the good traits of two parents; Haploids are used for rapid breeding; Mutation breeding is used to greatly improve varieties; Polyploids are used to increase yield and nutrient content; The time of cross-breeding is F2; There are differences in the method of obtaining pure mutants in animal and plant cross-breeding (self-breeding in plants and test-crossing in animals).| |Human genetic diseases| It can be judged by the typical chart. The pedigree chart can be used to determine whether it is inherited with Y (if the patient is all male, it may be inherited with Y)(Other judgment contents are not completely mentioned, temporarily omitted)| <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
High School Biology Gene Reassembly Teaching Plan Design
High school biology teaching design template basic steps
The basic steps of designing a high school biology teaching template were as follows: ** 1. Teaching objectives ** 1. ** Knowledge objective **: specify the biological knowledge content that students need to master, such as the requirements for mastering biological concepts, principles, structures, functions, and other aspects. 2. ** Ability Target ** - Cultivate students 'observation, analysis, induction, reasoning, and other thinking skills. For example, through the observation and analysis of biological phenomena or structures, improve the corresponding ability. - To improve the students 'experimental operation ability or inquiry ability, such as designing experiments, operating experimental instruments, recording and analyzing experimental data, etc. 3. ** Emotional goal ** - Cultivate students 'interest in biology, such as stimulating students' curiosity through interesting biological phenomena or practical applications. - To help students establish a correct scientific attitude, such as the attitude of seeking truth from facts, rigorous academic attitude, and cultivate values such as teamwork. ** 2. Important and Difficult Points in Teaching ** 1. ** Teaching focus **: determine the core knowledge content, concepts, principles, or skills that students need to master in the teaching process. These contents are the key to building the subsequent knowledge system. 2. ** Difficulties in Teaching **: Clearly identify the content that is difficult for students to understand and master. It may be abstract concepts, complex physiological processes, or key steps in experimental operations. ** 3. Teaching Method ** 1. Guiding and Heuristic Method: The teacher inspires the students to think independently and understand the content of the knowledge through guiding questions and hints. 2. Self-inquiry method: Give students a certain amount of space for self-inquiry and let them explore biological knowledge by themselves, such as exploring the principles behind biological phenomena. 3. Group discussion method: organize students to discuss biological problems in groups, promote the exchange of ideas between students, solve problems together, and cultivate the ability to cooperate. ** 4. Teaching process ** 1. ** Introduction to a new lesson ** - It could be imported through story, direct, game, or situation. For example, by telling an interesting story related to the biological knowledge of this class, or creating a living situation related to biology, it would arouse the students 'interest and guide them to think, thus leading to new topics. 2. ** Teach a new lesson ** - In order to achieve the goal of knowledge and skills, and to guide students to learn basic concepts and knowledge on their own, teachers explained important content. - When explaining the difficult points of the process, namely the process and the method goal, guide the students to explore and learn. Let the students try to summarize the method with their own words first, and then the teacher will explain it in detail with examples. 3. ** Consolidating exercises **: Design relevant exercises according to the teaching content to let the students consolidate what they have learned. 4. ** summary **: summarize the knowledge learned in this lesson and sort out the knowledge system. 5. ** Homework arrangement ** - The assignments were based on the basic content to help the students consolidate their classroom knowledge. - The questions assigned were usually open questions that required the students to think about them. They met the needs of the students who had the ability to learn. ** 5. Blackboard Writing Design ** The teaching content was clearly presented in the form of pictures and texts, emphasizing the key knowledge and the theme of the lesson. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Biology teaching ability design case model essay
The following is a middle school biology book,"Blossom and Fruition"-the teaching ability design case of the flower structure: ##1. Teaching objectives ###(1) Knowledge and Skills To make the students understand the basic structure of flowers. The main structure of flowers is stamen and pistil. ###(2) The process and method Through observing and dissecting the basic structure of flowers, students 'observation, analysis, and hands-on operation skills will be improved. ###(3) Emotional attitudes and values Initially cultivate the students '"structure and function to adapt to the" philosophical point of view, and at the same time stimulate the students' love for flowers, protect flowers. ##2. Difficulties in Teaching ###(1) Important Points The basic structure of a flower. ###(2) Difficulties describe the process of pollen and fertilisation. ##3. Teaching process ###(1) Introduction to the new lesson A poetry solitaire game was launched to enliven the classroom atmosphere. According to the flowers mentioned by the students, the corresponding pictures were displayed with the help of powerpoint. After guiding the students to compare and observe, they found that there were differences in color, size, and shape of these flowers, and then asked questions: Are their basic structures the same? What kind of structure does a flower contain? This led to a new lesson. ###(2) New lesson 1. Question: What are the parts of a complete flower? The students read the teaching materials on their own with the questions and used the peach blossom model given by the teacher to observe. The teacher guided the students to name a complete flower in order from bottom to top and from outside to inside, which included the stalk, torus, petals, stamens and pistils. 2. [Can you tell me the function of a certain part?] (Students are expected to answer from the flower stalk, flower holder, petals, and petals because their functions are relatively simple.) 3. The teacher asked: What are the functions of the stamen group and pistil group? Which parts are included? The teacher explained with the help of the wall chart: The stamen is composed of silk and anther. The silk is slender, and the top is connected to the anther to support the anther. The anther is the main part of the stamen. When you use a tweezer to pinch the flowering medicine and observe it with a magnifying glass, you can see that there is a lot of pollen inside. There is a kind of reproductive cell sperm in the pollen. The pistil was composed of three parts: the pistil, the style, and the ovum. The pistil was the part that received pollen, the style was the connecting part between the pistil and the ovum, and the passage for the pollen tube to enter the ovum. The ovum was the expanded part at the base of the pistil. 4. What was the secret behind the internal structure of the ovaries? The teacher played the demonstration video of the vertical cutting of the peach blossom's ovaries and explained,"Cut the peach blossom's ovaries vertically and observe them with a magnifying glass. You can see the ovules inside the ovaries, which will eventually develop into seeds." 5. The last question was, what was the most important structure of a flower? In the stage of consolidating, methods such as playing games (puzzles and posters), carrying out experimental operations (dissecting and observing the structure of flowers), making models (making flower specimens/drawing diagrams/making simple models), etc. could be used. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
High school biology experiment technology summary and reflection teaching plan design
The following is a lesson plan for a summary and reflection of high school biology experimental techniques: ** 1. Teaching objectives ** 1. knowledge objectives - Students were asked to review the main experimental techniques involved in high school biological experiments, including the experimental steps, experimental principles, and so on. - Understand the importance of different experimental techniques in biological science research and practical applications. 2. ability objective - Through the summary, the students could improve their ability to summarize and integrate biological experimental techniques. - Cultivate the students 'ability to reflect on the problems, mistakes, and improvement methods encountered during the experiment. 3. emotion goal - To stimulate students 'interest in biological experiments and cultivate a rigorous scientific attitude. ** 2. Important and Difficult Points in Teaching ** 1. ** Main point ** - Comprehensively sort out the common techniques in high school biology experiments, such as the use of a microscope, material extraction, and identification. - Guide the students to summarize the experimental principles, operation steps, and experimental results. 2. ** Difficulty ** - Students were encouraged to reflect on the mistakes in the experiment process and propose effective improvement measures. - It enabled students to establish connections between different experimental techniques and form a complete knowledge system. ** 3. Teaching Method ** Lecturing, discussion, and group cooperation ** 4. Teaching process ** 1. Course Introduction (5 minutes) - Ask the students to recall the general content of the high school biology experiment by asking questions. For example,"Students, we have done a lot of experiments in the high school biology course. Can you first name a few experiments that are more impressive?" - According to the students 'answers, they briefly mentioned the experimental techniques used in these experiments, leading to the theme of this lesson-- 2. Experimental Techniques (20 minutes) - The students were divided into small groups (4 - 5 people per group) and assigned tasks. Each group was responsible for concluding a type of biological experimental technology. For example, the first group was responsible for microscope-related experimental technology (cell observation experiment, etc.), the second group was responsible for material extraction and identification experimental technology (such as the extraction of choroplasts, fat identification, etc.), and the third group was responsible for exploratory experimental technology (such as exploring the factors that affect the activity of the reagent). - Each group discussed and sorted out the relevant content of this kind of experimental technology, including the experimental principle, operation steps, key points, and the way to present the experimental results. - Each group sent a representative to report, and the teacher made a brief note on the blackboard to form an overall high school biology experimental technical framework. 3. Experiment Reflection (20 minutes) - The teacher guided the students to reflect on the experimental techniques reported by each group. For example, in the experiment on the use of the microscope, he asked,"What difficulties have you encountered when using the microscope to observe the cell structure? How was it resolved? If you do this experiment again, what aspects will you improve on?" - The students were asked to discuss again in small groups, focusing on the mistakes in the experimental process, areas that could be improved, and the limitations of these experimental techniques in practical applications. - Each group shared the results of the discussion, and the teachers commented and supplemented, emphasizing the importance of experimental reflection to improve experimental skills and scientific literacy. 4. Overall Knowledge Integration (10 minutes) - According to the previous records and the results of the students 'discussion, the teachers integrated the overall knowledge of the high school biology experimental techniques and summarized the connections and commonalities between different experimental techniques. For example, many experiments involved the use of scientific methods such as the control principle and the control variable method. - Students should be guided to understand the biological experimental technology system from a macro perspective. Students should understand that different experimental techniques are used to explore various phenomena and laws in the biological sciences. 5. Class summary (5 minutes) - The teacher summarized the lesson, emphasizing the significance of the summary and reflection of high school biological experimental techniques for students 'biological learning and scientific inquiry ability. - Arrange homework: Ask students to choose a biological experiment that they are most interested in and write a detailed summary and reflection report of the experimental techniques, including a detailed description of the experimental techniques, their gains and shortcomings in the experiment, and ideas for future experiments. ** 5. Teaching Resources ** Multi-media equipment (used to display relevant experimental pictures, videos, and other auxiliary teaching materials), blackboards, chalk, etc. ** 6. Teaching Evaluation ** 1. By observing the students 'performance in group discussions and reports, the students' mastery of biological experimental techniques and their ability to summarize were evaluated. 2. According to the completion of the students 'homework after class, the depth of the students' reflection on the experiment and the overall understanding of the experimental techniques were judged. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The Strategy of Biology Teaching in High School
Here are some strategies for teaching biology in high school: ** 1. Teaching plan ** 1. ** Careful planning **: The teacher should draw up a comprehensive teaching plan before the start of the class, including the selection of experiments, the relevant instruments, experimental materials, and drugs used in each experiment. It should be clear which ones need to be purchased or prepared in advance, the number of classes needed, the location of the experiment (school or home), the specific methods and steps, the time for students to communicate, and how to evaluate the effect of the experiment. For the more difficult experiments, they would conduct pre-experiments in advance to grasp the time. 2. ** Experiment arrangement **: Make an experiment teaching schedule, write down the experiment content, including the experiment date, class, section, and name, and arrange the experiment according to the plan. ** 2. Research on teaching materials ** 1. In-depth analysis: Teachers should study the teaching materials in depth because the subject background, basic knowledge, research ideas, experimental design, operation tips, and other parts of the teaching materials have their own significance. The teachers had to understand the content of the teaching materials and conduct pre-experiments if necessary. Only then could they guide the students to analyze the teaching materials, clarify the knowledge background, clarify the research ideas, and then design the experimental plan to carry out the investigation. ** 3. Teaching methods ** 1. ** Demonstrations and video assistance **: Using the "education-demonstration" method, teachers can play videos, recordings, animations, or do experimental demonstration in class to help students build a clearer knowledge framework. 2. ** Inquiry-based teaching **: According to the teaching purpose, content, students 'actual conditions, equipment conditions, and other factors, the inquiry-based teaching method is adopted to let the students think more and find new methods and steps. When teaching theoretical knowledge, students could be allowed to summarize knowledge through experiments to cultivate students 'scientific quality, research ideas and methods, and strengthen ability cultivation and knowledge transfer. 3. ** Stratified Teaching **: Study the students 'academic situation, implement layered teaching according to their specific conditions, such as the results of other subjects, and do a good job in cultivating excellent students. Pay attention to target students, promote fringe students, and increase the number of effective online students. ** 4. Student Management ** 1. ** Group Cooperation **: Set up experimental activity groups and divide the class into groups of three or five. They could share wisdom in group activities, cultivate the spirit of innovation, encourage each other in the face of setbacks, improve communication and collaboration skills, and design and complete experiments under the guidance of teachers on the basis of self-learning relevant knowledge. Then, they would collect and organize materials, write reports, and conduct oral communication and mutual discussion. 2. ** Guide the use of resources **: Guide the students to actively use the curriculum resources in the community and family, such as visiting the relevant workshops, doing simple biological production at home, etc. You can also use the Internet to find answers to difficult questions or seek the help of experienced people. This will allow the students to understand the relationship between biological science, technology, and society and increase their interest in learning. ** 5. Teaching Evaluation ** 1. ** Comprehensive evaluation system **: Design a teaching evaluation system. Through the evaluation, not only can you understand the effects of the project activities, but you can also find the problems, difficulties, and psychological changes that students have encountered in practice. For example, using checklists to evaluate operational behavior, inquiry ability, emotional attitudes, values, etc. to ensure the smooth implementation of teaching activities and achieve teaching goals. ** 6. Enhancing students 'learning ** 1. [** emphasis on memorizing teaching materials **: Students must memorize the contents of the biology teaching materials. Apart from the page number, they must master almost everything. The supplementary materials can be hand-written notes or a book to assist them. After that, they can practice the big questions.] 2. ** Learning Method Guidance **: strengthen the guidance of learning methods and cultivate students 'good learning habits and interests. It would help students learn how to study biology well, guide them to grasp the essential laws of life science, and form learning habits that were suitable for their own development. At the same time, combining production and practical life teaching, it cultivates the students 'ability to use the knowledge they have learned to solve practical problems and improve their learning efficiency. 3. ** High-quality proposition and analysis **: Create high-quality weekly test questions, carefully analyze the results of the weekly and monthly tests, and adjust the teaching progress and methods in a timely manner according to the analysis results. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
High School Biology Heredity and Evolution
The thought map of the second compulsory subject of high school biology,"Heredity and Evolution", mainly covered the following points: - ** The discovery of genetic factors **: - The reasons for the success of Mendel's pea crossbreeding experiment included the correct selection of experimental materials (pea self-pollinating, closed pollinating, easily distinguishable relative traits, etc.), the study of relative traits from one pair to many pairs, the analysis of experimental results, the use of hypothesis-deduction method, etc. - The related concepts included relative traits, trait separation, dominant and latent traits, allelic genes, dominant and latent genes, homo and heterozygy, and the combination of genetics and environment to form a trait. - Concepts such as crossing, self-crossing, and test-crossing (F1 hybrids with a recessive-type hybrid can test the F1 gene type). - ** Relationship between genes and genetics **: - Meiosis is related, including the concept of Meiosis (the division in which the number of hormones is halved when mature reproductive cells are produced, and the cell splits twice with each copy of the fetus). - The first division of the Meiosis Division (such as the characteristics of various stages such as the sperm cell in the seminidium, the interphase replication of the sperm, and the syndesis of the prophase) and the second division of the Meiosis Division (such as the characteristics of various stages such as the disorderly arrangement of the prophase). - ** Nature of Genes **:(The relevant content is not described in detail in the materials. It can be further supplemented according to the contents of the teaching materials, such as the exploration of DNA as the main hereditary material, etc.) - ** Gene expression **:(The relevant content is not described in detail in the materials. It can be further supplemented according to the content of the teaching materials, such as the process of transcribing and translation.) - ** Gene mutation and other mutations **:(The relevant content is not described in detail in the materials. It can be further supplemented according to the teaching materials, such as the concept, type, and significance of gene mutation, and other types of mutations such as aberrations, etc.) - ** From crossbreeding to genetic engineering **:(The relevant content is not described in detail in the materials. It can be further supplemented according to the content of the textbook, such as the principle, process, advantages and disadvantages of crossbreeding, and the operation tools and steps of genetic engineering, etc.) - ** Modern Biological Evolution Theory **:(The relevant content is not detailed in the materials. It can be further supplemented according to the teaching materials, such as the change of population gene frequency and biological evolution, isolation and speciation, etc.) <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The Design of Jinan Version Teaching Plan for the Junior High School Biology Trial Teaching Model Class
Since it was not clear which chapter of the Jinan version of junior high school biology lesson plan design ideas, the following examples were "The structure of flowers","The formation of fruits and seeds" and "Blood vessels" to explain some common design ideas of the Jinan version of junior high school biology lesson plan. ** I. Determination of teaching objectives ** 1. ** Knowledge and Skill Target ** - For example, the content of "The structure of flowers" was to let students identify the structure of various parts of flowers and learn the basic methods of dissecting flowers."The formation of fruits and seeds" was to let students understand the structural changes in the process of fruit and seed formation."Blood vessels" was to let students briefly describe the structure and functional characteristics of arteries, veins, and capillaries and distinguish the three types of blood vessels. 2. ** Course, Method, and Target ** - In <<The structure of flowers>>, the students 'observation ability and hands-on operation ability were trained through the observation and dissection of peach blossoms. In <<Blood vessels>>, the students' observation ability and induction ability were improved through model observation. 3. ** Emotions, attitudes, values, goals ** - For example, through the study of the structure and function of various parts of flowers, the structure of flowers gradually formed the biological point of view of "the unity of biological structure and function", enhancing the awareness of caring for vegetation; the concept of the unity of structure and function was formed in the blood vessels. ** 2. Determination of teaching difficulties ** 1. ** Main point ** - The structure, dissection, and observation of flowers in <<The structure of flowers>> were the main points; the formation of fruits and seeds in <<The formation of fruits and seeds>> were the main points; and the structure and function of the three blood vessels in <<Blood Vessel>> were the main points. 2. ** Difficulty ** - It was difficult for students to master the dissection and observation methods of flowers in the book "The structure of flowers"; it was difficult for students to understand the corresponding parts of flowers that developed into fruits and seeds in the book "The formation of fruits and seeds"; it was difficult to understand the relationship between the structure and function of blood vessels in the book "Blood Vessel". ** 3. Design of the teaching process ** 1. ** Introduction to a new lesson ** - In "The structure of flowers," a variety of videos of flowers blooming were presented on a variety of media to draw out the topic."Blood vessels" guided students to tie bandages on each other's wrists and observe the changes in the back of their hands to draw out the knowledge related to "blue veins"(blood vessels). 2. ** Exploring new knowledge (new lesson)** - In "The structure of flowers", the students were asked to tell the structure of the flower by intuition. Then, the teacher would guide them to observe the structure of the flower in a certain order, recognize the structure of the flower stalk, the flower holder, and so on. They would also carry out the dissection experiment of the flower. In "The formation of fruits and seeds", the knowledge points were drawn out by doing questions, and then the changes of the structure of each part of the flower during the formation of fruits and seeds were explained in detail. In "Blood Vessel", the students were asked to observe the blood vessels and blood flow in the caudal fin of small fish, and then the types and functions of the blood vessels were taught. 3. ** Consolidating and improving ** - For example, in the book "The Structure of Flowers", students were instructed to draw the structure of the dissected flower and label the name of the structure. 4. ** Class summary ** - Guide the students to share their gains from this lesson and clarify the key content. 5. ** Homework arrangement ** - For example,"The Structure of Flowers" allowed students to introduce the knowledge gained in class to their family and friends after class. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Creating Biology Teaching in Junior High School
The following are some innovative ways of teaching biology in junior high school: ** I. Teaching model innovation ** 1. ** Open Teaching ** - Teaching objectives and content: The teaching objectives and content are dynamic and open. Biology courses were updated quickly and needed to be improved continuously. This characteristic was suitable for open teaching. For example, when teaching green plant-related content, students could be brought into nature and experience the differences between green plants in person, so as to fully experience the course content, stimulate learning enthusiasm and initiative, and improve the teaching effect. 2. ** Layered Teaching ** - Take into account the differences between students: Take into account the differences between students in terms of family situation, education, potential, etc., including factors such as knowledge background, IQ, and emotions. The traditional teaching model used a unified spoon-feeding method to teach students in accordance with their aptitude, while the layered teaching method could take care of the individual development of students. - "Scientific grouping: Students are grouped according to their own knowledge system, ability level, and other factors to minimize the differences between students in the same group. Then, a unified teaching model is used to teach students in the group, respecting the differences between students, helping students build self-confidence and stimulate learning interest. ** 2. Use the smart classroom environment for innovation ("Five-dimensional Integration" teaching model)** 1. ** To improve the quality of preparation and stimulate students 'interest (First Dimension)** - The teacher used the smart classroom to push the micro-class video to assist in the preparation, and the students asked questions after watching it. Teachers could use data feedback to know whether students were watching microclasses, and they could also understand problems through message boards. Students could also discuss online and form a learning community. 2. ** Construct a life situation and do a good job of introducing it into the classroom (second dimension)** - The core knowledge of the classroom was integrated into the living situation, breaking through the limitations of time and space in the classroom. For example, life observation tasks related to biological knowledge, such as the "7-Day Observation Diary of Mung Bean Seeds", could be assigned. Students could use the tablet terminal to take photos and upload them. This would help to cultivate academic literacy and allow students to understand core knowledge in their daily lives. 3. ** Enriching classroom activities, teachers and students explore together (Third Dimension)** - Make use of the smart classroom environment to enrich the forms of interaction, such as answering questions, random roll call, etc. to increase the attention and participation of students in the classroom. During group discussions, the teacher could send a discussion task, and the group would upload the results to the big screen to share. For biological experiments, teachers could display the experimental process through the physical booth of the tablet terminal. For experiments that were difficult to complete in the classroom, they could use the virtual experimental booth to deepen the students 'understanding of knowledge. 4. ** Prompt feedback in class, using learning to stimulate reflection (Fourth Dimension)** - In the smart classroom environment, the teacher arranged the whole class to answer questions, and the students used the tablet terminal to answer the questions. The teacher grasped the students 'answers in real time through intelligent correction and big data statistics and analysis, so as to better complete the teaching and achieve the course goal. 5. ** To improve the quality of assignments and evaluations (Fifth Dimension)** - In addition to traditional paper assignments, various forms of assignments could be arranged through the smart classroom environment, such as micro-class review, virtual experiments, activity experience, test questions, handwritten report production, Short videos editing, etc. In the evaluation class, big data was used to analyze the test situation, understand the common mistakes, and carry out targeted explanations. It could also generate a customized study manual to push exercises for students 'weak knowledge points. ** 3. Through project-based learning and project-based learning, innovation ** 1. ** Project-based learning ** - For example, in Tianjin City Nancang Middle School, teachers and students used project-based learning mode to carry out experimental research in the fields of tissue culture, water culture, soil culture, and microorganisms. In the process of project research, students had to consult literature, design experiments, draw mind maps, determine experimental processes, analyze experimental data, construct mathematical models, write experimental reports, display results, etc. This helped to improve students 'various abilities, such as observation ability, reading literature ability, experimental operation ability, argumentation ability, analysis problem ability, language expression ability, and also cultivate scientific thinking and scientific research spirit. 2. ** Research-based learning ** - Teachers set up many research learning courses such as "tissue culture of candied dennie","water culture vegetables","water culture flowers","production of microorganisms fertilizer", etc., and self-compiled school-based teaching materials to encourage students to carry out innovative learning and research, provide students with individual and diverse choices, and promote the cultivation of students 'interests, practical ability, and innovative spirit. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Junior high school biology teaching and research content
The teaching and research content of the junior high school biology department included many aspects: 1. ** Open class and class evaluation **: For example, teachers carry out open classes, such as Teacher Liu Honglei's open class "Nucleus-Division of labor and cooperation within the system", using a specific classroom model to let students actively participate. After that, the other teachers would evaluate the class and, on the basis of affirming the results, propose suggestions such as shortening the content and digging deeper into the knowledge to achieve common progress. 2. ** Discussion on the revision of teaching materials **: Reading the revised content of the high school biology version of the New People's Education to adapt the teaching to the development of the times. This practice is also useful for the teaching and research of junior high school biology. It can be used as an analogy to discuss the revision of junior high school biology teaching materials, so as to better grasp the teaching content. 3. ** Teaching method optimization **: - ** Carry out the "Four Cleanings" in teaching **: All biology teachers will seriously study the relevant guidelines and attach importance to the most important part of "Tangtang Qing". They will refer to the six teaching procedures and flexibly organize teaching according to the students 'foundation and teaching content. Students were required to master new knowledge in class, ensure practice time, complete homework in class, and mark it on the same day. At the same time, they could be divided into groups to let the team leader check the learning tasks. In order to improve the quality of teaching, we should focus on the "four optimization" in classroom teaching, namely, the optimization of teaching methods, classroom structure, teaching means and coaching methods. - ** Group lesson preparation **: This is an effective way to improve the quality of lesson preparation and classroom teaching efficiency. Teachers worked together to formulate teaching plans in a planned and organized manner, analyze the difficulties of teaching materials, determine teaching methods, and write lesson plans. In this process, teachers could deepen their understanding of the teaching materials, expand their teaching ideas, and improve their own quality. - ** Life-oriented teaching objectives **: When the teaching objectives are based on the students 'knowledge, ability, and emotional attitude, they can be introduced into social hot topics to achieve life-oriented. For example, using the topic of test-tube babies to discuss genetic knowledge, or telling the story of the cloned sheep, Dory. - ** Life-oriented teaching content **: Since junior high school students focus on thinking in images, they can use life-oriented explanations to help them understand abstract concepts or theories. For example, they could use the school level to simulate the structure of animals, or teach blood knowledge from the blood test report. - ** Diverse teaching methods **: - ** Scenario-based teaching **: For example, in the teaching of breathing, by introducing the topic of weight-loss methods around them, it will arouse the students 'interest and raise questions. It will make the students actively analyze the problems and connect knowledge with life. - Experiential Teaching: For example, an experiment to explore the effect of light on the lives of the rat women. Students were allowed to participate in the process of finding the rat women and understand their living environment. This could stimulate their interest in learning and cultivate their awareness of caring for life and maintaining ecological balance. - ** Practice-based teaching **: For example, when exploring the environmental conditions for seed sprouting, the students would be asked to do experiments at home after preparing for the lesson. Then, they would go to school to exchange the results, improve the students 'language expression and cooperation skills, and let the students experience the process of the production, formation, and development of biological knowledge. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>