"Where I Come From" PPT

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"Where I Come From" PPT

Part One: Review Import

1. All living organisms are composed of ( ), ( ) is the basic unit of living organisms.

2. The first person to discover cells was a British scientist ( ). ( ) invented the microscope and became the first discoverer of the world of microorganisms.

3. During the process of growth and development of organisms, cells are constantly ( ) ( ) ( ) ( ).

4. The microscope is composed of ( ) ( ) ( ) ( ) ( ) and other parts.

cell

1. Organisms are composed of cells.

2. Cells are the basic units of living organisms.

3. Robert and Hooke of England were the first to discover cells.

4. During the process of growth and development of organisms, cells continue to grow, reproduce, age, and die.

5. Cells reproduce by dividing.

6. The structure of animal cells is: cell membrane, cytoplasm, and nucleus.

7. The structure of plant cells is: cell wall, cell membrane, cytoplasm, nucleus, vacuole, chloroplast, and starch.

Part Two: Expanding the Ark

What does the fetus eat in the mother's belly?

The mother's uterus is like a warm bag that contains many liquid nutrients that the baby needs. The baby grows by absorbing nutrients and oxygen from the mother's body through a tube called the umbilical cord. The growth of the embryo is also inseparable from the support of the placenta. The fetus grows 1 mm every day and cannot do without the rich nutrients in the amniotic fluid.

Twins refer to the situation where viviparous animals give birth to two individuals in one pregnancy. Twins can generally be divided into two categories: identical twins and fraternal twins. Identical twins are two fetuses that develop from one fertilized egg, while fraternal twins develop from different fertilized eggs. The average twin birth rate worldwide is 1:89.

The third part: practice after class

1. Express gratitude to your mother in your own way. You can pour water for her, wash her feet, wash her clothes, etc.

2. Write your feelings and experiences in a science diary.

Keywords: Qingdao version fifth grade science PPT courseware for the second volume is free to download, where do I get the PPT download from, .PPT format;

For more information about the "Where Do I Come From" PPT courseware, please click on the Where Do I Come From ppt tab.

"Where Do I Come From" Flash Animation Courseware:

"Where Do I Come From" Flash Animation Courseware Teaching Objectives 1. Preliminarily understand the situation of the fetus in the mother's body and the human growth process, be able to fully express the observation results, and boldly say where one comes from. 2. Be able to communicate with peers about their growth process and tell...

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Update Time: 2024-11-18

This template belongs to science courseware Qingdao Edition Fifth Grade Science Volume 2 industry PPT template

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