"What is Water Like" Drinking Water PPT Courseware 2

Description

"What is Water Like" Drinking Water PPT Courseware 2

Activity 1: How to distinguish water

Experimental tips:

①. Students in each group divide work and cooperate, and the group leader manages the experimental items well.

②. The experimenter carefully observes and verifies, and the recorder makes a record and labels it.

③. After the experiment is completed, organize the experimental items.

Activity 2: What are the characteristics of water?

Experimental tips:

①. Each group should conduct a hands-on experiment with the experimental process just done by the teacher and observe whether it is the same as the conclusion reached before.

②. After the experiment is completed, organize the experimental items.

experiment one

1. Pour soy sauce, vinegar, salt water, sugar water, and water into beakers respectively, and use your eyes, nose, and tongue to identify their color, smell, and taste.

2. Place a piece of white chalk behind each cup of liquid and observe their transparency.

Experiment 2

Place a piece of chalk behind the water glass and ask students to observe in front of the water glass. Can they see the chalk? ( )

This means: water is transparent.

Experiment 3

1. Slowly drop clean water on a horizontal glass plate and observe whether the water flows in all directions.

2. Observe your pencil case, eraser, textbook, etc. Can they flow on the desktop?

3. Pour water into containers of different shapes and observe whether the water has a fixed shape and a certain volume.

4. Observe whether your pencils, erasers, and textbooks have fixed shapes?

Objects like water that change shape easily and flow are called liquids

Objects that do not change shape easily and do not flow, such as wooden blocks and pencils, are called solids

Water is a liquid, colorless and odorless, and it flows

Are there any rules for the flow of water?

Let's investigate through the experiment below.

Summary: An object like air that can flow in any direction is a gas.

Review: What kind of objects are solid?

What kind of object is a liquid?

What kind of object is a gas?

my conclusion

Objects like water are liquids

Objects like blocks of wood are solid

Gases like air

Teamwork to complete activities (notes)

1. Don’t open the bag yet;

2. Divide the work and cooperate within the group, assign a recorder to fill in the observation form;

3. Discuss in the group the reasons for making good judgments during observation;

4. Fill out the observation form, pack the experimental supplies, sit up straight and wait quietly for other groups, and stop the discussion when the music stops.

Classify the objects in the bag

Objects that are tangible and have a fixed shape, such as stones and wood, are called solids

Objects like water and vinegar that can be seen and touched but have no fixed form are called liquids

Invisible and intangible objects like air are called gases

Thinking: What other common solids, liquids and gases are there in life?

Class summary

Know that objects in nature can usually be divided into three categories according to their states: gas, liquid and solid. The difference between them is that solids have a fixed shape, while liquids and gases do not.

Understand that water is a colorless, odorless, and transparent liquid. Living things are closely related to water. It is widely used in daily life, and water exists in the ocean, atmosphere, land, and living organisms.

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For more information about the PPT courseware "What Does Drinking Water Look Like?", please click on the What Does Drinking Water Look Like PPT tag.

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Update Time: 2024-11-23

This template belongs to science courseware E-education edition third grade science volume 1 industry PPT template

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