"Where Has the Sugar Gone" Drinking Water PPT Courseware 3

Description

"Where Has the Sugar Gone" Drinking Water PPT Courseware 3

Teaching materials (status and role)

"Where did the sugar go?" is the content of Lesson 13 of the "Drinking Water" unit in the first volume of the third-grade science textbook published by the Hubei Education Press.

This lesson aims to guide students through experiments to explore how to speed up the dissolution of objects in water on the premise that water can dissolve some substances.

Talk about teaching objectives

Knowledge and skills

Know that water can dissolve some substances.

Know what the "dissolution" phenomenon is.

Competence goals

Develop good experimental skills and observation skills.

Emotion goal

Experience the fun of inquiry and establish a sense of collaboration and willingness to communicate.

Talk about learning

Pre-class learning analysis

Understand students' knowledge preparation status, determine the starting point of teaching, decide what content to review first, and choose appropriate teaching methods.

Analysis of situation in class

Most students in class can think actively, speak enthusiastically, and have good analytical skills on problems. But he is lively and active and cannot concentrate for a long time, so he needs to be guided in class.

After-class academic analysis

The purpose of post-class analysis is to analyze whether students' learning results have reached the expected teaching goals, identify difficulties, and improve teaching.

Talk about the teaching process

A glass of water is introduced to arouse students' thinking, and they know it is a glass of sugar water based on tasting it.

Revealing the topic: There was no sugar in the cup, which made them think about "where did the sugar go?" which led to the topic of this lesson.

Students make wild guesses.

Verify the guess. The team worked together to complete the experiment using potassium permanganate instead of sugar to see where the sugar went.

Propose the concept of "the phenomenon of dissolution".

Digging deeper: Are all items soluble in water? Deepen students' understanding of the concept of dissolution.

Work in groups to conduct experiments to confirm whether the experimental results are consistent with your guesses.

Study how to speed up the dissolution of items in water.

Activity 1

create situations

Take a look, do you know what it is? What exactly is it and how can you know for sure?

reveal issues

Based on the taste, I know it is a cup of sugar water. Since it is sugar water, why can't I see the sugar?

Activity 2

Can you make sugar dissolve in water? Tell me what you plan to do? Observe the situation in the cup and see what happens.

Design a demonstration experiment: How does sugar disappear? In order to see this process clearly, use potassium permanganate instead of sugar and put it into a glass of water. What phenomenon do you see? Stir gently with a glass rod and continue to observe and describe the changes in potassium permanganate. Students experimented in groups using potassium permanganate.

Reflection on teaching

1. Starting with a cup of sugar water can make students want to find out.

2. The experiment with potassium permanganate allows students to intuitively and vividly see that substances are "evenly dispersed" in water, allowing concepts to be gradually formed like a "puzzle", which is in line with the cognitive characteristics of third-grade children.

3. Experiments to observe whether other substances dissolve in water cultivate students' good experimental hands-on and observation skills, experience the fun of scientific inquiry, and establish a sense of mutual cooperation.

4. In teaching, issues that should be paid attention to will affect the teaching effect. For example, the sand must be washed clean, otherwise the water will become turbid after stirring, which will affect observation and make it difficult for a few students to judge; another example is that the appropriate amount of potassium permanganate needs to be accurately grasped by the teacher through repeated experiments in advance, and it must be Prepare the students in groups in advance strictly according to the quantity, so as to achieve the best experimental effect in the classroom.

Keywords: Where Has the Sugar Gone Teaching Courseware, E Education Edition Third Grade Science PPT Courseware Download, Third Grade Science Slide Courseware Download, Where Has the Sugar Gone PPT Courseware Download, .PPT format;

For more information about the PPT courseware "Where Did the Sugar Go in the Drinking Water?", please click the "Where Did the Sugar Go in the Drinking Water ppt" ppt tag.

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Update Time: 2024-12-03

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

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