Science teachers in grade two should let students learn to express their views clearly in their own language and be able to handle simple information. The following is the draft of the first volume of my second grade science in primary school, hoping to provide you with reference and reference.
Model essay on science in the second grade of primary school: a paradise for animals and plants
Teaching objectives:
1. scientific concept goal:
Soil is an important resource of the earth's home;
Many animals and plants depend on soil for survival or life.
2. Teaching inquiry objectives:
Learn to collect evidence and be able to handle simple information;
Learn to express your views clearly in your own language.
3. The goal of scientific attitude:
Can have a certain curiosity about things and interest in plants and animals in the soil;
Be able to describe the animals and plants in the soil truthfully, respect the facts and develop a sense of seeking truth from facts;
Learn to listen, share and express, and realize unity and cooperation among groups.
4. Scientific, technical, social and environmental objectives:
Can realize that man and nature are a harmonious whole and inseparable.
Teaching emphases and difficulties:
Teaching emphasis: Through observation and understanding, let students realize that many animals and plants depend on soil for survival or life.
Difficulties in teaching: Through observation and understanding, students can realize that man and nature are a harmonious whole and inseparable.
Teaching preparation:
Soil, sink (soil container), magnifying glass, tweezers, shovel, record sheet, etc.
Teaching process:
first kind
(1) Create a situation and introduce a dialogue.
Show pictures of soil
Soil is a familiar and unfamiliar thing. What is familiar is that we can see it every day, on the road, in the yard and in the corner of the campus. Strangely, even if we often see it, few people bend down to observe the soil carefully. So in this class, we will observe the soil and the animals and plants in the soil together. (Show the topic)
(Design intention: let students really realize that the soil is always around us, but most of them have not carefully observed the world of soil and stimulated students' interest in observing soil)
(2) Observe the soil.
1. Each group takes out the soil prepared in advance.
What is in the soil? How to observe? How to use these tools? What problems should we pay attention to during the observation?
(Design intention: observing with problems and doing targeted experiments can achieve unexpected results)
Health 1: There may be small creatures and some dead leaves in the soil?
Student 2: Observe carefully, orderly and meticulously to every corner?
Health 3: magnifying glass magnifies some small things, tweezers are used to hold things, shovels are used to shovel soil, and animals and plants in the soil are observed?
Health 4: Observe carefully, don't miss every corner, follow a certain order, and don't harm small creatures in the soil?
(Design intention: Let students guess what is in the soil, so as to stimulate the desire to dig, let students organize their own language in the process of speaking again, and be able to clearly express their views and elaborate their ideas. )
Explain the precautions as a supplement.
2. Observe the soil and make records.
(Design intention: record while observing, so that students can leave evidence after observation in time, and have evidence to follow when making a report. )
3. Report your observations.
Second lesson
(3) seminar activities.
1. How many kinds of plants and animals have we found that depend on soil for growth and life?
(Design intent: The number of species found between groups may be different at the same time. A careful, orderly and comprehensive group will find more than ordinary groups, which can form inter-group competition and stimulate students' enthusiasm for observation. )
2. Describe the plants and animals that grow on the surrounding soil.
(Design intent: to make students realize the "connection" between animals and plants and soil, that is, to help students further strengthen their understanding that many animals and plants need to rely on soil to survive)
(4) expansion.
Make a flat and transparent observation box with waterproof glue, battens and plexiglass, and fill the observation box with soil to keep the soil moist. Put earthworms or ants on the soil, spread some tender grass and leaves and observe the activities of earthworms or ants.
(Design intention: The expansion activities effectively make up for the living conditions of animals under the soil that are difficult for students to observe. Different areas can consider replacing the material "ant workshop", but from the perspective of the authenticity of the observation environment and the observation cost, it is more suitable to observe earthworms. )
The first volume of science in the second grade of primary school is the lecture notes. Fan Wener: Turn the screw.
Teaching objectives:
Scientific knowledge:
1, understand the screw and its function.
2, can tell the correct use of tools to fix the screw method, requires standardized and safe action.
Scientific inquiry
1. By observing the external characteristics of the screw, we can choose the appropriate tools to fix the screw in a planned way.
2. Be able to make bold guesses when choosing tools, and verify the guesses when using their fixing screws.
3. Be able to discuss and communicate with classmates in the process of inquiry.
scientism
1, can have a strong interest in screwing activities.
2. Be able to judge whether the selected tools are suitable or not, and verify the conjecture with facts during use.
3. Be able to carry out cooperative inquiry learning as needed.
Science, technology, society and environment
Teaching preparation
Teacher preparation:
Perforated adhesive tape, cross screw, slotted screw, hexagon screw, internal triangular screw, hexagon screw, cross screwdriver, etc.
Teachers and students prepare together.
Handbook of activities for science students.
Teaching process:
(A) the status quo and problems
1, class, have a look. These projects all use the same parts. Can you find it? The student replied, yes, it is a screw. Screws are really useful. Can you turn the screws? In this lesson, we will explore how to make love.
(2) Exploration and discovery
Activity 1: Select tool
There are many kinds of screws, so you should learn to choose tools.
Use the big screen to let students practice.
2. Complete the activity manual for science students.
Activity 2. clamping/terminal screw
Watch the video. Then let the students watch the teacher twist, and then let the students operate one by one. Teachers must hold hands and pay attention to safety.
Let other students observe and evaluate. Complete the activity manual.
(3) Application and expansion
Ask the students to observe whether the screws of the table and bench are loose, and tighten them if they are loose.
The first volume of science in the second grade of primary school is the lecture notes. Fan Wensan: Engineer.
Teaching objectives:
1, be able to use your hands and brains, choose suitable materials, and design a weather vane that meets the needs and show it to your peers.
2. Continue to experience the three basic links of engineering activities in practice: defining problems, designing, making, showing and sharing, and experiencing working like an engineer.
3. By reading Edison's story, design and make a weather vane to further stimulate the desire for invention and creation.
Teaching focus:
Design and make wind vane.
Teaching difficulties:
Find and solve the problems encountered in the production of wind vane and make improvements. ?
Teaching process:
First, the introduction of new courses.
Show the pictures of Edison and guide the students to have a look. ) Students, do you know him? Yes, he is Edison. )
2. Who can introduce Edison to you?
According to the information collected before class, students exchange the story of Edison, the world's great inventor.
Edison (1847- 193 1) is a world-famous inventor and is known as the king of inventions in the world. He has 1000 patents for inventions in his life, such as electric light, phonograph, typewriter and mobile camera.
The camera shows pictures of the incandescent lamp, phonograph and typewriter invented by Edison.
Among more than 1000 patents invented by Edison, the invention of electric light is the most important. In the process of improving filament materials, Edison made thousands of experiments on hundreds of materials, which lasted 13 months. Finally, he chose carbon filament as filament material, which greatly prolonged the life of the bulb.
Teacher's summary: Edison is the king of inventions in the world. He has 1000 patents in his life, among which the invention of electric light is the most important. When he invented the electric light, he made thousands of experiments on hundreds of materials in order to improve the light bulb. It can be seen that if you want to become an engineer, you must constantly test and improve, and you must have the spirit of perseverance and perseverance. Today, we are going to learn the special topic of this textbook: Like an engineer.
4. blackboard writing topic: special learning is like an engineer.
5. Students read the questions together and understand the learning content.
Second, design and make a simple weather vane.
Students, everyone wants to be an engineer, so how can we become a qualified engineer? 2. First ask questions related to the project. Please look at the illustration on page 42 of the textbook to understand the problems related to this project.
3. Students observe the pictures as required to understand the working methods of engineers. Understand that products should be based on actual needs.
4, the teacher put forward the production requirements of this lesson:
In this class, we will make a weather vane like engineers. Please discuss: What do we need to do to measure the wind direction? What parts does a weather vane consist of? How can I make the direction indicator light rotate flexibly?
5, teacher guidance:
(1) Students, do you know what objects in life can be used to measure the wind direction?
Leaves, national flags, plastic bags, paper strips, cloth strips and so on can be used. All these objects have a common feature that they are light, and any light object can be used to measure the wind direction.
(2) Today, let's make a weather vane. What materials should we choose?
The teacher guides the students to observe the picture of the direction sign on page 42 of the textbook and understand that it takes wood chips, small nails, direction signs, small sticks, a small board and so on to make a weather vane.
(3) The teacher guides the students to have a look at the weather vane made by the students in the textbook, and then discusses the steps of making the weather vane with the students in the group.
(4) The teacher emphasized that there are three main parts in the process of making the wind vane, the base is used for fixing, the bracket is used for supporting, and the pointer is used for indicating the direction. Be sure to let the wind vane rotate freely, and there can be no jamming.
6. Students use actions as weather vanes, and teachers patrol to learn about the making of students' weather vanes, and use cameras to guide them. And remind students to pay attention to the cooperation between classmates.
7. Each group shows the wind vane made by this group and other students evaluate it.
8. Test and manufacture the wind vane.
Guide students to blow air from all directions to test their weather vane. You can use a small fan to blow air during the test. If there is no small fan, you can use books to guide students to blow air in the same direction.
The teacher chooses 1 to perform for two groups of students, and the other students evaluate it.
9. The teacher praised and affirmed the students from the aspects of being a weather vane and cooperating with classmates at the same table.
Third, the class summary:
1. Today, we learned the special study-like an engineer, we learned the deeds of Edison, a great inventor in the world, his perseverance and his scientific spirit of not being afraid of failure. At the same time, we made a weather vane, learned the steps and methods of making it, and cultivated our hands-on ability.
Students, up to today, we have learned all the contents of this science book, but the exploration of science does not end with the end of the science class. In daily life, as long as we are good at observing, thinking and doing things, we can find something.