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Anonymous users2024-02-06Pedagogical process design.
Description] To understand the vegetative reproduction of plants, it is best to arrange a practical activity to take students to the horticultural field for field visits, and complete the teaching task of this lesson with the assistance of the technical staff of the horticultural field. If possible, teachers may wish to think more about how to organize students to conduct research and how to make the best use of the material conditions and technical resources of the garden. In this way, the theory is linked to practice, and the effect must be very good.
In addition, in the follow-up cultivation of plants, you can save a lot of trouble in preparing materials, get a lot of technical guidance, and greatly improve the interest of students in research!
Of course, this is an idealized scheme, and most school science teachers can only teach according to local conditions, and the material preparation and teaching plan here are also designed according to our "normal".
1. Import. 1. Ask a question to reveal the topic: We all know that by scattering seeds in the ground, new plants can grow, but can we reproduce without seeds? (Board book topic).
2. Understand the vegetative reproduction of plants.
1. Narration: In fact, there are many plants that can be propagated in other ways in addition to propagating with seeds. Have you ever seen such a plant?
2. Students discuss in groups and record the results on the activity record.
3. Group report.
4. The teacher organizes and records on the blackboard.
5. Guide students to summarize and understand the way of plant vegetative reproduction: roots, stems and leaves are the vegetative organs of plants, and flowers, fruits and seeds are its reproductive organs. However, these plants like the one we just discussed can use vegetative organs to reproduce, and we call this phenomenon vegetative reproduction.
Board book: root propagation, stem propagation, leaf propagation).
6. Question: What other plants do you know that can use roots, stems, and leaves to reproduce?
7. Teachers and students work together.
3. Understand the common methods of artificial vegetative propagation - cuttings, stripping, and propagation with underground stems.
1. Conversation: Since many plants can be propagated by vegetative propagation, do you have the confidence to use such a method to breed a plant?
2. Discussion: What plants do you plan to cultivate? What methods can it employ to reproduce?
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Anonymous users2024-02-05Knowing that some plants can reproduce offspring by vegetative reproduction, knowing the common ways of vegetative reproduction.
Affective Attitude Values: Experience the inappropriateness of plant reproduction, the wonder of nature.
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Anonymous users2024-02-04The specific content of writing a lesson plan includes the following ten items:
1. Topic (state the title of the lesson).
2. Teaching objectives (or teaching requirements, or teaching objectives, which describe the teaching tasks to be completed in this lesson).
3. Course type (indicate whether it is a new course or a review class).
4. Lesson hours (indicate the number of class hours).
5 Teaching focus (explain the key problems that must be solved in this lesson) 6 Teaching difficulties (explain the knowledge points that are prone to difficulties and obstacles in the learning of this lesson) 7 Teaching process (or classroom structure, explain the content, methods and steps of teaching) 9 Board book design (explain the content to be written on the blackboard during class) 10 Teaching aids (or teaching aid preparation, explain the tools used to assist teaching methods) In the process of writing lesson plans, the teaching process is the key, and it includes the following steps:
1) Introduce new lessons.
1. The design is novel and lively, and it should be summarized.
3 Ask questions about the students, how much time it takes, etc.
2) Teach new courses.
1. Choose different teaching methods for different teaching contents.
3) Consolidation exercises.
1. The exercise is exquisitely designed, with layers, slopes, and densities.
4) Summary.
5) Assignment arrangement.
When arranging those contents, we should consider the expansion of knowledge and ability.
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Anonymous users2024-02-031. Teaching Objectives (1) Process and Methods: 1Be able to consult information as needed and choose the appropriate way to collect relevant information 2
Can use the roots, stems, and leaves of plants for vegetative propagation (2) Scientific knowledge: know that some plants can reproduce offspring in the way of vegetative reproduction, and know the common ways of vegetative reproduction 3) Emotional attitudes and values: Experience the fun of planting a plant in vegetative reproduction, be interested in the planted plants, and be willing to take care of the planted plants.
2. Teaching process: (1) Introduce new courses 1Question:
Can you give us a few examples of how plants reproduce their offspring? Have you ever seen your parents grow vegetables or flowers at home? How do they propagate these plants?
2.Students communicate within small groups. 3.
Ask the question: Can plants reproduce without seeds? (Presentation of the topic) 4
Students write down what they know and then discuss it in small groups. 5.The whole class exchange teachers and students jointly summarized:
Some plants use seeds to reproduce offspring, such as cabbage, radish, rape, sunflower, etc., and some plants do not use seeds to reproduce, such as geraniums, spider plants, potatoes, ginger, chrysanthemums, ground roots, narcissus, etc., these plants are propagated by roots, stems, and leaves of plants. (2) Study the way of vegetative reproduction 1The teacher uses a large screen to show the five plants in the text:
Some adventitious roots will grow from the edge of the ground roots, and some small leaves will sprout upwards, and the small leaves with adventitious roots can be plucked and inserted directly into the soil to survive. Potatoes are propagated by cutting into pieces, and as long as there is a bud on them, a new plant will grow. Small seedlings will grow on the stems of spider plants, and the lower part of the seedlings has adventitious roots, so they can reproduce when they fall into the soil.
Ginger is a tuber, and small shoots can "emerge" upwards on its stem nodes and grow adventitious roots downward, so it can reproduce without seeds. Small bulbs grow next to the daffodil bulbs, which can grow into a new daffodil when planted in the soil, so daffodils reproduce with bulbs. 2.
In addition to reproduction from seeds, plants can also use stems, leaves, or roots to reproduce offspring, which is vegetative propagation or vegetative propagation (cloning).
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Anonymous users2024-02-02Did you know that tomatoes grow indefinitely? You don't need seeds to reproduce this way.
Personally, I don't agree with this method of making money, because it's not suitable! If you want to make money, you can collect roses, orbs, Xing Yujing, this kind of thing, or build a few trumpets to collect treasure maps and this kind of thing, such as picking materials, if you have enough time, you can train a mage, open a treasure chest, or go to brush the boss out of the purple outfit Of course, the premise also depends on whether you have time and operation!
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