"Bat and Radar" PPT teaching courseware

Description

"Bat and Radar" PPT teaching courseware

Part One: Learning Objectives

1. Recognize 12 new words such as "bat" and "bat", correctly pronounce the multi-phonetic character "system", be able to write 14 words such as "da" and "mosquito", and be able to write 13 words such as "radar" and "security".

2. Read the questions next to and after the text and ask your own questions; organize the list of questions in groups and think about the angles from which you can ask questions. (emphasis)

3. Grasp the key points while reading, accurately grasp the main content of the article, understand the connection between the safe flight of airplanes at night and bat path exploration, and stimulate the interest in science, observation and exploration. (difficulty)

Bat: Bat is a mammal with a mouse-like head and trunk, dark brown fine hairs, and cortical membranes on its limbs and tail. It flies in the air at night and eats mosquitoes, moths and other insects. Its eyesight is very weak and it relies on the ultrasonic waves it emits to guide its flight. When resting, it hangs upside down under the eaves or under a tree by its claws, and hibernates in a hidden place in winter.

Radar: Radar is a device that uses extremely short radio waves for detection. It can be used to measure the direction, distance, size, etc. of a target. It is not affected by climatic conditions in use. It is widely used in military, astronomy, meteorology, navigation, aviation, etc.

Bat and Radar PPT, Part 2: I will write

da (radar) mosquito (mosquito) that is (even if)

Branch (Science) Horizontal Vertical Rope (Rope)

Bats and Radar PPT, Part 3: Text Analysis

guess what is this?

How can a plane fly safely in the dark night?

It turns out that people got inspiration from bats.

Bats fly at night, and their flying skills are so good! How do we know that bats are capable of flying? Underline the relevant sentences and read them.

Bats fly at night and can also catch moths and mosquitoes; and no matter how they fly, they have never collided with anything, and they can dexterously avoid even an extremely thin wire.

Could it be that its eyes are so sharp that it can see everything clearly in the dark night?

in conclusion

Three different experiments have proven that bats fly at night not with their eyes, but with their mouths and ears working together to find their way.

So how do the bat’s mouth and ears work together?

Summary: Scientists were inspired by experiments and research on bat pathfinding and invented radar. This is the connection between bats and radar, so the topic must be connected with "and".

Bat and Radar PPT, Part 4: Expansion and Extension

What is bionics?

The strange abilities of creatures in nature often arouse people's strong interest. For example, frogs have very strange eyes. They see moving things very keenly, but they are "blind" to stationary things. People got inspiration from frogs' eyes and invented "electronic frog eyes". With the help of "electronic frog eyes", airport commanders can more accurately direct the landing of aircraft. People study the structure and function of certain organs of living things, get inspiration from them and imitate them, and successfully develop new instruments and machines. This gives rise to a science called bionics.

Bat and Radar PPT, Part 5: Practice in class

Write the rhetorical devices used in the following sentences.

1. Is it possible that its eyes are so sharp that it can see everything clearly in the dark night? ( )

2. The bats are scurrying around like headless flies. ( )

3. How do airplanes fly safely in the dark night?

It turns out that people got inspiration from bats. ( )

Keywords: Free download of Chinese PPT courseware for the fourth grade of the People's Education Press, Volume 1, bat and radar PPT download, .PPT format;

For more information about the "Bat and Radar" PPT courseware, please click the "Bat and Radar ppt" tab.

"Bat and Radar" PPT download:

"Bat and Radar" PPT Download Part One: Review Knowledge Through the study of the previous class, what knowledge did we learn about bats? Bats fly at night not with their eyes, but with their ears and mouth. The title of the article is "Bat and Radar", why...

"Bat and Radar" PPT:

"Bat and Radar" PPT Part One Content: Objectives of this lesson 1. Be able to recognize 13 new words in this lesson, be able to write 14 new words, and understand words composed of new words. (Key points) 2. Read the text aloud and understand the safety of aircraft flying at night and the characteristics of bat pathfinding. (Key points) 3. Stimulate learning..

"Bat and Radar" PPT courseware 5:

"Bat and Radar" PPT courseware 5 Self-study requirements: (1) Read: read the pronunciation of the characters accurately and read through the text. (2) Think about it: How can an airplane fly safely in the dark night? (3) Ask: What questions do you have after reading the text? ... ... ... study..

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Update Time: 2024-11-19

This template belongs to Chinese courseware People's Education Press fourth grade Chinese textbook industry PPT template

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