The fourth grade Chinese "Bat and Radar" teaching plan.

Bat and Radar is a popular science article, which introduces the application of bionics-how bats fly at night and how airplanes fly by radar at night, inspired by bats. The following is the lesson plan of Bat and Radar, the second volume of the fourth grade Chinese, I hope it will help you!

Bat and Radar Teaching Plan Grade Four Chinese Volume II (1) Teaching objectives:

1. Know 7 new words and write 12 new words and the word "bat, littering" correctly.

2. Read the text aloud, master the main content of the text, and understand the connection between the night flight of the plane and the pathfinding of bats.

3. Stimulate students' interest in science, observation and inquiry.

4. Collect and exchange knowledge about bionics with students, and improve the ability of information collection and processing.

Teaching emphases and difficulties

1. Teaching focus

Teach students how the secret of bat flying at night is discovered. How did you discover this mystery, how did you solve it, and how did scientists create bionics to benefit mankind?

2. Teaching difficulties

The working principle of radar navigation of bats and planes flying in super waveguide is only expressed in words, which is always abstract. Audio-visual teaching should be implemented by means of audio-visual teaching, so that the abstract principle description can be turned into an intuitive image demonstration.

Teaching preparation:

Bat, radar chart, bionic material, new word card.

Teaching time:

The second class hour

first kind

Teaching objectives:

2. Read the text aloud and master the main contents of the text.

Teaching process:

First, introduce the topic.

Students, do you know what is in the picture? Yes (bats and radar). Who will tell you about them? Bat and radar are two completely different things, so what is the connection between them? Let's learn lesson 1 1 together. (Students' Reading Theme)

Second, read the text for the first time and understand the main ideas.

1. Read the text by yourself and eliminate the word barrier;

2. Teachers check the reading of new words and texts; Pay special attention to the pronunciation of "bat, eagle";

3. Read the text silently and try to talk about what the text mainly says.

4. Give students feedback and ask them to say the method of induction.

5. Methods of summarizing the main contents: topic expansion method, adding the meanings of all parts and grasping the main points can be used.

Thirdly, students' autonomous learning.

1. Let the students read the third paragraph by themselves, find out the related words and talk about what they have learned from this related word. If you have any questions about the text, please practice reading questions.

2. How many experiments have scientists done? What is the way of each experiment? What was the result? What conclusion have you reached? Please read the fourth and fifth paragraphs by yourself and solve the above problems with your favorite reading method. You can find out the answer by filling in a form or making symbols in a book.

3. Students' communication and self reading.

Please come on stage to introduce how scientists solve the mystery of bat pathfinding.

5. What have you learned from the sentence "Scientists have finally uncovered the secret that bats can fly at night after repeated research"? What words did you learn?

Yes, it is not easy for scientists to uncover the secret that bats can fly at night, and it takes a lot of effort. What's the connection between bats and radar? We will continue to study next class.

Second lesson

Teaching objectives:

1. Know 7 new words and write 12 new words and the word "bat, littering" correctly.

2. Understand the connection between night flight and bat exploration.

3. Stimulate students' interest in science, observation and inquiry.

4. Collect and exchange knowledge about bionics with students, and improve the ability of information collection and processing.

First, cooperative learning, breakthrough key points

1. How does the bat's mouth and ears cooperate? What's the connection between bats and radar? Please study in groups and read paragraphs 7 and 8 carefully.

2. Feedback and communication from group representatives

Teachers use courseware to demonstrate the methods of bat exploration and radar detection of obstacles. Please fill in the blanks.

The radar on the plane is like a bat's ()

The radio waves emitted by radar are like bats' ()

The radar screen is like a bat's ()

Second, expand and extend.

1. Read the full text by yourself and tell me what you got from it. What inventions of man were inspired by animals?

2. Read the data package to supplement the exchange of bionics materials.

3. Design a small invention according to bionics.

Third, essays.

1. Know new words.

Step 2 put forward difficult words

3. Methods of reciting words separately

4. Combine words into new words

5. Copy new words.

Fourth, summary.

Bat and Radar Teaching Plan Grade Four Chinese Volume II (2) Teaching Objectives

① Know 7 new words and write 12 new words. Read and write the words "bat, clarity, capture, moth, mosquito, avoidance, keenness, bell, fly, uncovering, pushing, obstacle, fluorescent screen, littering" correctly.

② Read the text aloud, master the main contents and main points of the text, understand the relationship between safe flight of airplanes at night and bat exploration, and stimulate the interest of loving science and being willing to observe and explore.

③ Collect information about bionics, communicate with classmates, and improve the ability of information collection and processing.

Emphasis and difficulty in teaching

1, let students grasp the main points in reading and accurately grasp the main content of the article.

2. Stimulate the interest of loving science and being willing to observe and explore.

Teaching preparation

The teacher prepares the courseware; Students collect pictures and words about bionics.

Teaching time

2 class hours

teaching process

first kind

First, create situations and introduce new lessons.

1. Multimedia display pictures of bats and radars. Teacher: Students, do you know them? Please tell me what you know about them.

2. Teacher's introduction: Bat is an animal and radar is a detection device. What's the connection between them? Today, we learn a new text "Bat and Radar" together. (blackboard writing topic)

Second, the preliminary reading of the text, the overall perception

1, read the text twice freely, read the difficult sentences several times, mark the natural paragraph number, draw new words, and read correctly.

2. Read the text in pairs and know the new words.

3. Play the slides of writing new words, name the words from the train, and remind students to pay attention to the pronunciation of pictophonetic characters and the words "bat, eagle".

4. Talk about the main content of the text.

What is the main point of this text? Please read the full text silently and say it in your own words.

(2) Naming, the teacher summarizes the main contents of the method according to the situation, such as: some students grasp the topic and contact the text, and some students contact the meaning of each part of the text.

Third, help students fill out forms and read independently.

Read the third paragraph by name and find out: sentences with related words, such as "even if ……………", think about what it means; What questions did the article raise? Please read the tone of the question.

② Read the fourth, fifth and sixth paragraphs silently and fill in the table below. The black part in the table is the content to be filled in, and the answer is for reference, as long as the students grasp the main points, without emphasizing whether the language is concise or not. )

③ Communication: First in the group, then in the class, exchange the information of filling in the form.

Read the text and look at each other's charts at the same table. How do scientists solve the mystery of bat pathfinding? Then say the stage to be introduced.

⑤ Summary:

A. Show the sentence "Scientists have finally uncovered the secret that bats can fly at night after repeated research". What did you learn from this sentence? (feeling "repeated, finally")

B. How do the bat's mouth and ears cooperate? What's the connection between radar and bats? We will read and explore these questions in the next class.

Fourth, write new words and practice writing.

The teacher demonstrates new words that are difficult to write, such as "avoid and expose", and guides students to pay attention to the fact that most of the new words in this lesson are left and right, with the left side accounting for only one third and the right side accounting for two thirds. The words should be written neatly and evenly.

Second lesson

First, review old knowledge and introduce new lessons.

Dictate the new words in this lesson. Correct yourself and then correct your mistakes.

After telling the main idea of the text, introduce a new lesson: This lesson focuses on how bats' mouths and ears cooperate and the relationship between radar and bats.

Second, read the text intensively and deeply understand the content of the text.

1. Read paragraphs 7 and 8 freely and think about the above issues.

2. Promote reading with actions and learn how bats explore the road.

It refers to the performance of three students, who are "bats" and "ultrasonic waves emitted from bats' mouths" all their lives, and are obstacles all their lives.

3. Promote reading by drawing, and understand the connection between bat pathfinding and radar.

A. Please use the diagram to illustrate bat pathfinding and radar detection.

Fill in the blanks and talk about the connection between radar and bats.

The radar on the plane is like a lie.

The radio waves emitted by radar are like bats' ()

The radar screen is like a bat's ().

Third, practice oral English and accumulate language use.

1. Create a situation: There are a group of junior children who really want to know the scientific secret between bats and radar. Today, we will be a "little commentator". Now please read the text according to the prompt and get ready!

Explain the main points:

A. Ask such a question ── Why can an airplane fly safely at night?

B. Scientists have done three experiments to uncover the secret of bats' night exploration.

C. Scientists imitated the bat's method of exploring the road and installed radar on the plane, which solved the problem of safe flight at night.

2. Talk to each other at the same table, and then introduce yourself or recommend to the whole class. If conditions permit, students can be taken to preschool classes (or lower-grade classes) as "small commentators".

3. Summarize and comment on the explanations of the students on the stage, mainly praise and encouragement.

4, interesting reading, learning to make information cards.

Read the "Information Kit" by name after class to learn what bionics is. Teachers will show courseware (illustrated with pictures and texts), introduce relevant information, and stimulate students' strong interest in reading and exploring.

② Students take out extracurricular materials by themselves, and teachers issue "information cards" to guide students to read, choose and make their own information cards according to after-class "information packages". Pay attention to choose what they can understand, and don't copy the original text at length. The "information card" issued by teachers can be designed as follows:

Category Bionics Data Collector _ _ _ _ _ _ _ Date _ _ _ _ _ _No. _ _ _ _ _No. _ _ _ _ _ _ _ No.

(3) Show the communication information card: first show it in the whole class-read it out, project it in kind, and post it in the "learning garden" or "display platform". And then find friends to communicate with each other.

Fourth, summarize the full text and extend it.

1, read the full text silently and tell me what inspiration you got from this article. Appropriate communication "I also want to get inspiration from animals and design a small invention."

2. After reading the "information kit", teachers will show pictures about bionics, supplement relevant written materials, and stimulate students' curiosity and interest in reading and exploring.

3. Check the information about bionics collected by students after class. If you are interested, combine comprehensive study, design small inventions and do experiments.

Verb (abbreviation for verb) assigns homework.

Bat and Radar Teaching Plan Grade Four Chinese Volume 2 (3) Teaching Requirements:

1, find out the connection between the safe flight of aircraft at night and the flight of bats.

2. Practice dividing text.

3. Learn the new words in this lesson and practice making sentences with "finally" and "obviously".

4. Read the text aloud.

Teaching emphases and difficulties:

Find out the connection between the safe flight of airplanes at night and the flight of bats.

Teaching aid preparation:

Homemade software, Dr. Peng

Teaching time:

2 class hours

Teaching process:

first kind

First, reveal the topic.

What is a bat? Have you seen it? Have you ever seen a radar? Introduction to bats and radars. What is the relationship between the two?

Second, read the text as required.

1, request:

Read the text carefully, think while reading, and see which natural paragraphs are about bat flight and which natural paragraphs are about the connection between bat and radar, and mark them respectively.

2. Students read the text silently as required, and teachers patrol.

Third, discuss according to the requirements put forward.

(1) What paragraphs are about bat flight? (three, four, five, six)

1. What are the characteristics of bat flight? Which sentences in the text best illustrate this feature of bat flight?

2. How many experiments have scientists done to uncover the secret of bats flying at night? How is each experiment done?

3. What are the similarities between these three experiments? What is the difference?

4. What did these three tests prove? Find out the sentences and read them out. Why can three experiments prove this?

5. How do bats find their way with their mouths and ears? Find out the sentences and read them out.

(2) What paragraphs are about the connection between bats and radar? (2) and (7)

1, read the seventh paragraph by roll call.

2. Why is it said that installing radar on the plane is "a way to imitate bats to find their way"? In your own words.

(3) If the text is divided into three paragraphs, how should it be divided? Why do you want to divide it like this?

Second lesson

First, practice reading the full text.

Second, talk about how scientists got inspiration from bats to invent radar.

First understand the speech according to your own experience, and then guide the students to speak it in an orderly and complete way according to the narrative order of the text.

We should learn the scientific spirit that scientists are good at finding problems, studying problems and getting inspiration from things for the benefit of mankind.

Third, practice making sentences.

1, show thinking exercise question 4 after class.

2. Read the sentences.

3. Practice making sentences with "finally" and "clearly" in oral English.

4. Make sentences in written form.

Copy the words three times in reading, writing and writing.

Bat and Radar Teaching Plan Grade Four Chinese Volume II (4) Teaching Objectives

1. Learn the new words in this lesson.

2. Understand the relationship between bats and radar. Understand the principle of bat flight.

3. Learn to collect and organize information.

4. Knowing that airplanes fly by radar at night is the inspiration people get from bats, knowing that there is a universal connection between things, and stimulating students' interest in exploring scientific mysteries.

teaching process

First, reveal the topic.

Show me the questions and ask questions.

1. In this lesson, we will learn a highly scientific article.

Exhibition theme: 34 bats and radar

Reading theme

2. What do you want to know after reading the topic?

(1) What is a radar? Everyone checked the information during the rehearsal. Who would like to introduce it?

(2) What is the relationship between bats and radar?

Second, preliminary perception and overall reading.

1. Read the text and think about the relationship between bats and radar.

Students read the text by themselves and think while reading.

2. Read the text by name

3. Student since the enlightenment: The radar was invented according to the bat's pathfinding method.

Third, read deeply and understand the content of the text.

Since radar is inspired by bat's pathfinding method, what do they have in common?

1. Let's look at the bat's pathfinding method first.

The teacher introduced:

Bats can fly at night and catch moths and mosquitoes. It can fly ... can it see everything in the dark?

Talk about your views on bat flying skills and give reasons.

Show:

No matter how the bat flies, it has never seen anything collide with it. Even a very thin wire can cleverly avoid it.

No matter how the bat flies, it has never seen anything collide with it.

Comparing these two sentences, which is better?

Discuss at the same table

Name exchange

(1) What do bats fly at night?

Read the text and find the relevant sentences. Please draw a straight line under them.

"Three different experiments have proved that bats fly at night not by their eyes, but by their mouths and ears."

Scientists have proved through many experiments. Let's have a look.

Group learning

Compare the three test methods and complete the table:

Test conditions ()

The first experiment: blindfolded bat (), the result ().

The second experiment: blindfolded bat (), the result ().

The third experiment: blindfolded bat (), the result ().

Test results ()

(3) What is the secret that bats can fly at night?

Read the text and say it. (Understand with pictures)

Let's see how the radar guides the plane.

Read the text and say it again.

Can you talk about their similarities?

They are similar in that they will reflect radio waves back when encountering obstacles.

Fourth, summarize, expand after class and collect information.

1. People were inspired by bats and invented the navigation system of airplanes.

In our life, there are also many inventions inspired by animals.

For example, seeing that fish can float freely in the water, submarines were invented. These are called bionics.

2. Please consult the relevant materials to see what other inventions people have related to animals, and be inspired by them.