"Bat and Radar" PPT courseware 3

Description

"Bat and Radar" PPT courseware 3

Bats are mammals with a mouse-like head and trunk, dark brown fine hairs, and cortical membranes on their limbs and tail. They fly in the air at night and eat 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.

While reading, think: What is the main content of the text?

bat clear catch moth

Ultrasound avoids keen bells

fly uncovers reflex obstacle

Fluorescent screen, horizontal and vertical

What does the text mainly talk about?

The text mainly talks about how scientists discovered the reason why bats can fly at night through repeated experiments, and were inspired to install radar on airplanes to solve the problem of airplanes flying at night.

Read paragraph 1. Thinking: What is this paragraph mainly about?

Describe a plane flying at night.

Why can airplanes fly safely at night?

It's because people got inspiration from bats.

Read the text silently: Think about which paragraphs in the text are about scientists exploring the mysteries of bats’ night flight?

This content is written in paragraphs 4-6 of the text.

What thoughts have these caused scientists to think about? How many experiments did scientists do to find out? What is the purpose of each experiment? What method was used? What was the result? (fill in the form below)

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".

Extracurricular extension, expanding thinking

Radar is modeled after bats. What other creatures did scientists get inspiration from and what modern equipment did they create?

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

"Bat and Radar" PPT teaching courseware:

The first part of the PPT teaching courseware "Bat and Radar": Learning objectives 1. Recognize 12 new words such as bat and bat, read polyphonic characters accurately, write 14 words such as da and mosquito, and write 13 words such as radar and safety. . 2. Read the questions beside and after the text and ask your own...

"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..

File Info

Update Time: 2024-11-19

This template belongs to Chinese courseware People's Education Edition Chinese Language for Grade 4 Volume 2 industry PPT template

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