"Where did the water on the clothes go?" PPT courseware 3

Description

"Where did the water on the clothes go?" PPT courseware 3

1. Teaching materials

"Where did the water on the clothes go?" is the content of the second volume of the third grade "Science" published by Hubei Education Press in 2015. By creating scenarios, this lesson allows students to conduct scientific inquiry activities in actual situations, understand the meaning of evaporation, and provide examples of utilizing and preventing water evaporation in production and life in conjunction with real life situations.

2. Talk about learning

Students in the third grade of primary school are lively, active, and playful. They like to gain knowledge and find happiness through exploration. "Where did the water on the clothes go?" is a scientific activity that analyzes and thinks about the physical phenomena around us. It explores the process of water evaporation through students' personal experience, and then understands the meaning of evaporation, cultivates students' interest in learning science, and lays the foundation for subsequent learning of scientific knowledge. Therefore, in this class, I start with the scientific inquiry plots that students like, so that they can actively participate in teaching activities.

teaching objectives

1. Be able to guess where the water on clothes went, and design experiments to conduct research.

2. Be able to make a reasonable analysis of the water destination hidden behind different evaporation experiments.

3. Know that evaporation generally occurs on the surface of liquids and can occur at any temperature.

4. Be able to give practical examples of utilizing and preventing water evaporation in production and life.

5. Realize that science is all around us through the phenomenon of water evaporation.

Teaching focus:

Through experimental exploration, students can understand that evaporation generally occurs on the surface of liquids and can occur at any temperature.

Teaching difficulties

Examples of utilizing and preventing water evaporation in production and life are given in connection with real life situations.

By understanding the evaporation phenomenon of water, we realize that science is around us and realize that the substances in nature change.

1. Introduce questions to trigger conjectures

1. Teacher: The courseware shows pictures of clothes hanging to dry.

2. The teacher asked: What will happen to these clothes after they are dried for a period of time?

(Students guess and answer)

3. Teacher: After the clothes dried, where did the water go? Let's learn together today

Study Lesson 12 "Where did the water on the clothes go?"

2. Experimental exploration and problem solving

Group into groups to explore the two sets of experiments in the textbook and make relevant records.

experiment one

1. Experiment preparation: water, rag, desk, pen, notebook

2. Experimental steps

(1) First observe whether there is water on the desk before it is wiped clean? Take good notes.

(2) Wipe the desk clean with a wet rag and observe what changes happen to the desk at this time? Take good notes.

(3) After a while, what changes will happen to the table? Take good notes

3. Experimental findings: What did you discover through group communication?

Experiment 2

1. Experiment preparation: bowl, water, pen, notebook

2. Experimental steps:

(1) Fill the bowl with a small amount of water and mark the water level.

(2) Place the bowl filled with water in a ventilated place and observe it after a period of time to see if there are any changes in the water in the bowl.

3. Experimental findings: What did you discover through group communication?

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For more information about the "Where did the water on the clothes go?" PPT courseware, please click on the "Where did the water on the clothes go?" ppt tag.

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Update Time: 2024-07-04

This template belongs to science courseware E-education edition third grade science volume 2 industry PPT template

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