1. As we all know, vinegar is acidic and baking soda is alkaline. When vinegar and baking soda are mixed, they will change and produce carbon dioxide gas.
2. Use vinegar and baking soda to simulate the scene of volcanic eruption.
3. Interested in volcanic eruptions in nature.
Activities to be prepared
Focus of activities
As we all know, the mixing of vinegar and baking soda will change and produce carbon dioxide gas.
Activity difficulty
Observe and express the change process.
Activity process
Process 1: importing
Teachers can play videos of volcanic eruptions to children and make them interested in the natural phenomena of volcanic eruptions.
Volcanic eruption is a very strange natural phenomenon, and it is the strongest display of heat energy inside the earth on the surface of the earth.
Today, experiments can also simulate the phenomenon of "volcanic eruption".
Process 2: Know the materials and guess how to simulate the phenomenon of "volcanic eruption".
Vinegar is a common condiment in our life, which can be used for cooking, eating jiaozi and so on. Let the children try to smell the sour taste of vinegar. Food can be divided into acidic and alkaline, and vinegar is acidic.
Baking soda is not often heard by children. Observe the color of baking soda, as white as flour. We can eat soft and delicious bread, steamed bread, crisp biscuits and so on, all with the help of baking soda, which is used to make dough. While baking soda is an alkaline substance.
What happens when acidic substances and alkaline substances are mixed together? Will there be a scene like a volcanic eruption?
Process 3: Mix vinegar and baking soda to simulate volcanic eruption and observe the changes.
Tear off a piece of transparent adhesive in advance for use.
You can add all the red soapy water. Because soap is also alkaline, baking soda will not change chemically after it is added.
Before adding vinegar, the teacher should remind the children to observe the changes after mixing the two substances. For example, look, listen and touch separately. What changes have taken place?
The experiment found that vinegar and baking soda changed after mixing, with bubbles gushing out and a "popping" sound at the same time. It's cool to touch the bottom of the bottle with your hands.
Children, is our own "volcanic eruption" spectacular?
Activity summary
When acid vinegar and alkaline baking soda are mixed together, chemical changes will occur. The bubbles produced in the experiment indicate that gas is produced, and this gas is carbon dioxide gas.
Activity expansion
Application of carbon dioxide in life
Carbonate Beverages
The growth of plants needs carbon dioxide gas.
For fire fighting, when water cannot be used, carbon dioxide can be used.
The teaching plan "Volcano Eruption" in kindergarten large class 2 Activity objective:
1. Feel the phenomenon of volcanic eruption through experiments.
2. Cultivate interest in exploring nature.
3. Understand its characteristics.
4. Stimulate children's interest in scientific activities.
Activity preparation:
Experimental materials: small volcano model made of clay, operation panel, baking soda powder, a plastic cup, red pigment, white vinegar and a small spoon; Video data and operation steps of volcanic eruption.
Activity flow:
First, the teacher demonstrated the eruption of a small volcano.
Children, today the teacher will perform a magic trick for you.
2. Play the video of "Volcanic eruption" and observe the scene when the volcano erupts.
Teacher: Today, the teacher brought a video, and something happened in the video. Please take a closer look. What do you see? Why do mountains spew red liquid? Where did it come from? What do we usually call a mountain that spews red liquid like this?
Third, encourage children to do "volcanic eruption" experiments.
1, look.
Teacher demonstration
Step 2 ask questions
The teacher asked the kindergarten teacher the operation steps.
Step 3 do this
Children's operation, teachers' tour guidance.
Four. Activity summary
The situation of individual unsuccessful children.
Activity expansion:
Learn about the real volcanic eruption.
The design intention of "Volcanic eruption" 3, a teaching plan for scientific activities in kindergartens;
I always believe that the value orientation of early childhood science education should not only pay attention to the transmission of static knowledge, but also pay attention to children's emotional attitude, their ability to explore and solve problems, and the cultivation of active communication and harmonious coexistence with others and the environment. Small scientific experiments can not only cultivate children's good practical and mental abilities, but also cultivate their scientific literacy through these experiments. Therefore, I designed a small class of volcanic eruption, and explained the complex problems of volcanic eruption to children in a simple way through a small experiment, which not only satisfied their curiosity, but also learned scientific knowledge.
Activity objectives:
1. Let children feel and understand the phenomenon of volcanic eruption through scientific inquiry activities.
2. Children are willing to do hands-on operation and experimental exploration, and exchange the process and results of exploration.
Activity preparation:
Baking soda and vinegar, spoon, plate, rag, ppt.
Activity flow:
First, introduce Riddle.
Hello, children, today we are going to approach the kingdom of science with our teacher and explore the magical scientific mysteries together. Before we begin, the teacher will guess a riddle for the children, and the children should listen carefully. There is a mountain. If he is angry or angry, it will be very dangerous. Do children know what it is?
Second, show ppt to let children understand the phenomenon of volcanic eruption.
1, watch the video and feel the volcanic eruption.
2. The teacher shows pictures to explain and understand the types of volcanoes.
3. Dangers and benefits
Third, understand the experimental materials.
1, know vinegar
Understand the color, smell and function of vinegar by shaking, watching and smelling.
2. Do you know baking soda
Understand the color, taste and function of baking soda by watching and smelling.
Fourth, experimental conjecture.
1. The teacher asked: What happens if vinegar and baking soda are put together in a measuring cup? Please tell the children, will it be like a volcanic eruption?
2. Children guess.
Verb (abbreviation of verb) experimental operation
1, the teacher carries out the experimental operation. During the operation, we have to experiment and dictate the process while operating.
2. Children carry out experimental operations, and teachers patrol to remind the operation process.
3. Children share the experimental results.
4. The teacher summed it up.
5. Pack up the experimental materials.
Activity expansion
Children and parents can do this little experiment together with orange juice, coffee and coke. Will it erupt like a volcano?
The teaching plan of "Volcanic eruption" for large class scientific activities in kindergarten 4 Activity objectives
1, have a preliminary understanding of the causes of volcanic eruption, and are interested in the phenomenon of volcanic eruption.
2. Understand that mixing vinegar and baking soda will change and produce carbon dioxide.
3. Experience the joy of successful operation.
Important and difficult
Key point: Understand that mixing vinegar and baking soda will change and produce carbon dioxide.
Difficulty: understanding the cause of volcanic eruption
Activities to be prepared
1, volcano model (handmade with cups, plates and space mud), cola drinks.
2, baking soda, white vinegar, red plain water
3. Video of volcanic eruption, schematic diagram of volcano, PPT (pictures of baking soda and vinegar)
Activity process
First, video import to stimulate children's interest in volcanic eruptions
Teacher: Good morning, children. Today, the teacher brought an interesting video. Please watch what happened in the video carefully. What was it like when it happened? (Playing video of volcanic eruption)
Second, watch the video to get a preliminary understanding of the phenomenon and causes of volcanic eruption.
1. Did the children see what happened? (Volcanic eruption)
2. What is it like when a volcano erupts? (Play the courseware again) Please answer the questions.
Teacher's summary: When a volcano erupts, the crater spews out a lot of gas, then a lot of volcanic ash and rock fragments, and then lava flows down the crater to form a lava flow. Finally, the lava cools and the volcano gradually subsides.
3. Why did the volcano erupt? Please guess. (The teacher guides the children to make bold guesses)
The teacher concluded that volcanic eruption is a natural phenomenon, but it is not common. There is a lot of very hot magma in the deep underground where we live. When magma is under great pressure from the inside of the earth and rises to a very close distance from the surface of the earth, it will find an outlet (a weak part or crack in the crust) to erupt and form a volcanic eruption. (schematic diagram of volcano)
Third, simulate volcanic eruption and let children know that baking soda and vinegar will produce carbon dioxide when mixed together.
1, teacher: children, today the teacher invited a small volcano (volcano model) to visit our class and brought a small experiment-volcanic eruption, so that children can feel the phenomenon of volcanic eruption together.
2. Introduction: We need several materials for today's small experiment. Let's see what they are. First, show the red pigment water
Question: Can you guess what this is? (Guide children to observe and guess)
Summary: This is a mixture of red pigment and water, which is used as the magma of small volcano. Show me baking soda.
Question: What's this, little friend? What color is that? Let's try again. How do you feel? (Let children perceive and guess)
Summary: It's called baking soda. Baking soda has many uses, and we usually use it when making cakes (baking soda with pictures).
C, show white vinegar
Question: What's this, little friend? Mom can also use it when cooking. Please smell and taste! (Let children perceive and guess)
Summary: sour, yes, this is white vinegar, which my mother will use when cooking (pictures for vinegar). 3. The teacher does the experiment first and the children observe.
Teacher: All right, children, the experiment is about to begin. Step one, pour in red pigment water. Step 2, add a few spoonfuls of white baking soda; Step three, slowly pour in the white vinegar.
Ask questions:
1, wow! The teacher's small volcano erupted, so what was it like when the teacher's small volcano erupted? (Guide children to observe carefully and find many bubbles)
2. Why did the teacher's little volcano erupt? (Guide children to make bold guesses) Ask some children to try our guesses. (Guide children to operate verification)
The teacher concluded: Because baking soda and vinegar will change when mixed together, it will produce a gas called carbon dioxide, which will make our small volcano erupt.
3. Teacher: Do you want to have a try? Ok, I'll ask a little teacher to demonstrate first, and then ask the children to do a little experiment together. (Guide children to perceive volcanic eruption in the experiment, and remind them to sort out the experimental materials at the end of the experiment)
Fourth, activity extension.
Little scientists, did your experiment succeed? Today we know that when vinegar and baking soda are mixed, it will change and produce carbon dioxide. Careful children find that coke can also erupt in volcanoes. Let's have a try. Shake it first and observe that there are many bubbles in it, then open it and find that there is coke erupting. ) Hey, why does Coke erupt? Because coke contains carbon dioxide, this gas will make coke explode, but drinking this drink is not good for your health, so drink less drinks and more boiled water.
Did you have a good time today? The teacher assigned you a small task. Go home and learn other secrets of the volcano with your parents and share them with your children next time.
Activity summary
The success of this activity lies in that the preparation of courseware attracts children's attention, and children are very interested in its content and small experiments, but there are also many shortcomings.
During the activity, there was an operation link on the table, and my guide language was not clear, which led to some confusion among the children and they couldn't wait to do the experiment. I didn't make changes in time and let go in time; The language is not very refined, and the words are not very accurate; The schematic diagram of the volcano is difficult, and the children did not observe and understand it carefully; In order to emphasize the key points and difficulties, a small experiment was done, emphasizing that both vinegar and baking soda can produce carbon dioxide, and the verification process was a bit lengthy.
In short, I have gained a lot from this activity, make persistent efforts, strengthen my study and make myself better and better!