"Growth Changes of Silkworms" Animal Life Cycle PPT

"Growth Changes of Silkworms" Animal Life Cycle PPT
Category Format Size
Third Grade Science Volume 2, Textbook Edition pptx 6 MB
限时免费领取网站会员

"Growth Changes of Silkworms" Animal Life Cycle PPT

Download Points: 0.00
Free Download Upgrade VIP
Favorite Views: 3049 / Downloads: 305
Description

"Growth Changes of Silkworms" Animal Life Cycle PPT

Part One: Communicating the growth changes of silkworms

What changes happened to the little silkworm? Share your silkworm raising experience with your classmates.

When silkworms grow to a certain stage, they will grow new skin and replace the old skin. This is called molting. Silkworms shed their skin several times in their lifetime. Observe the process of molting of silkworms and record it in the record sheet.

During silkworm molting, the cuticle on the head will fall off first, and then the body will squirm, and the old skin on other parts of the body will shed back. This is the process of silkworm molting.

PPT on the growth changes of silkworms, part 2: observing the appearance and behavior of silkworms

The little silkworm has grown big and strong. Let's observe it carefully.

What does a silkworm look like?

What do the head, thorax, abdomen, and feet of a silkworm look like?

What could the small black spots on the sides of the silkworm's body be? Guess what it does.

How do silkworms eat mulberry leaves? What do the mouthparts of silkworms look like?

What do silkworms use to crawl and how do they crawl?

What is the relationship between the silkworm's body structure and its life?

PPT on the growth changes of silkworms, the third part: What else will silkworms grow into?

When silkworms stop eating leaves and their bodies turn yellow and shiny, they are about to spin silk and form cocoons. Before the silkworm spins silk, build a small shelf for it, or make a small grid with paper so that it can form a cocoon there.

Observe the changes of silkworms before and after spinning, as well as the process of spinning, and record them in the record sheet.

The process of silkworm spinning

The silkworm raises its head and makes 8-shaped waves continuously, covering itself with silk.

Silkworms hang themselves in the air and weave a web in the shape of a cocoon.

The cocoon becomes thicker and thicker, completely covering itself.

Keywords: Free download of Chinese PPT courseware for the second volume of the third grade of the textbook version, PPT download of the growth changes of silkworms, PPT download of the life cycle of animals, .PPT format;

For more information about the PPT courseware "The Life Cycle of Animals and the Growth and Changes of Silkworms", please click the "The Life Cycle of Animals and the Growth and Changes of Silkworms" ppt tag.

"Our Life Cycle" Animal life cycle PPT download:

"Our Life Cycle" Animal Life Cycle PPT Download Part One Content: Introduction of New Knowledge Through the study of the previous lessons, we already know that all animals will go through a life cycle of birth, growth, development, reproduction, and death, so the human life cycle. .

"Our Life Cycle" Animal Life Cycle PPT:

"Our Life Cycle" Animal Life Cycle PPT Part One: Our Birth, Growth and Changes All animals have their own life cycle. What is the human life cycle? Where did we come from? The fertilized egg attaches to the mother's uterine wall..

"The Life Cycle of Other Animals" Animal life cycle PPT download:

"The Life Cycle of Other Animals" Animal Life Cycle PPT Download Part One: Introduction of New Knowledge What is the life cycle of silkworms? Birth, Growth, Development, Reproduction, Death... The life cycle of other animals PPT, Part 2: Explanation of new knowledge...

File Info

Update Time: 2024-11-18

This template belongs to science courseware Third Grade Science Volume 2, Textbook Edition industry PPT template

"Growth Changes of Silkworms" Animal Life Cycle PPT Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!

Tips: If you open the template and feel that it is not suitable for all your needs, you can search for related content "Growth Changes of Silkworms" Animal Life Cycle PPT is enough.

How to use the Windows system template

Directly decompress the file and use it with office or wps

How to use the Mac system template

Directly decompress the file and use it Office or wps can be used

Related reading

For more detailed PPT-related tutorials and font tutorials, you can view: Click to see

How to create a high-quality technological sense PPT? 4 ways to share the bottom of the box

Notice

Do not download in WeChat, Zhihu, QQ, built-in browsers, please use mobile browsers to download! If you are a mobile phone user, please download it on your computer!
1. The manuscript PPT is only for study and reference, please delete it 24 hours after downloading.
2. If the resource involves your legitimate rights and interests, delete it immediately.
3. Contact information: service@daogebangong.com

"Growth Changes of Silkworms" Animal Life Cycle PPT, due to usage restrictions, it is only for personal study and reference use. For commercial use, please go to the relevant official website for authorization.

(Personal non-commercial use refers to the use of this font to complete the display of personal works, including but not limited to the design of personal papers, resumes, etc.)

Preview
"Growth Changes of Silkworms" Animal Life Cycle PPT
VIP免费客服咨询
赚钱
成为签约合伙人
种草
觅知网“种草官”开始招募啦!!!
客服
售前客服
工作日:9:00-18:00
立即咨询
售后客服
工作日:9:00-22:30
周末:14:00-22:30
立即咨询
需求
填写您的需求