"Use a microscope to observe the living world around you (3)" Micro World PPT teaching courseware

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"Use a microscope to observe the living world around you (3)" Micro World PPT teaching courseware

Part One: Questions before class

1. Move the slide to the left, where will the object image under the microscope move?

——Move to the right

2. What does the word "上" look like when placed under a microscope?

3. How to make onion scales, temporarily mount the inner epidermis of leaves and observe onion cells?

Since Leeuwenhoek discovered microorganisms with a homemade microscope, scientists have discovered through observation that there are many microorganisms living in nature. Have we seen them? Under what circumstances have you seen it?

Use a microscope to observe the living world around you PPT, Part 2: Observing microorganisms in water

1. Collect water from some ponds or fish tanks.

2. Make temporary mounting films.

3. Observe with a microscope.

We can also use hay to cultivate microorganisms.

If the microorganisms move quickly and are difficult to observe, we can first put a small amount of absorbent cotton fiber on the slide, then drop a drop of pond water on it, and cover it with a cover slip. You can also use absorbent paper on the edge of the coverslip to absorb excess water to control the movement of microorganisms.

Use a microscope to observe the living world around you PPT, Part 3: Basic characteristics of living organisms

All are made of cells (except viruses)

All need nutrition

need to breathe

can respond to external stimuli

There are phenomena of growth, development and reproduction

There are phenomena of inheritance and variation

Can eliminate waste products produced in the body

Use a microscope to observe the living world around you PPT, part 4: What did you learn in this lesson?

1. The bottled water we drink has been purified, so there are no microorganisms in it. ( )

2. Microorganisms are living organisms and therefore metabolize. ( )

3. We can use hay to cultivate microorganisms. ( )

4. When making microbial slide specimens, we can control the movement of microorganisms by absorbing excess water. ( )

5. A drop of water in a pond contains many tiny organisms. ( )

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"Tiny World and Us" Tiny World PPT download:

"Tiny World and Us" Tiny World PPT Download Part One: Review and Summary How have human observation tools developed from ancient times to the present? How do people expand their observation horizons? ... ... ... Tiny World and Us PPT, Part 2...

"Tiny World and Us" Tiny World PPT:

"Tiny World and Us" Tiny World PPT Part One Content: Review and Summary Review the learning content of this unit, think about how human observation tools have developed from ancient times to the present, and how people's observation horizons have expanded. Let's talk about two relationship between them. ..

"Use a microscope to observe the living world around you (3)" Tiny World PPT download:

"Use a microscope to observe the living world around you (3)" Micro World PPT Download Part One: Exploring New Knowledge (1) Collecting and cultivating microorganisms. There are a large number of microorganisms living in the water of fish tanks, ponds, and creeks, and they are the main places for collecting microorganisms. Use dry...

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Update Time: 2024-11-21

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 2 industry PPT template

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