Teaching plan 1 of scientific activities in kindergarten large class: wonderful water
Activity objectives:
1, understand the relationship between concentration and water through experiments, and be interested in scientific phenomena.
2. Be able to describe what you see in your own language and be willing to communicate with your peers.
3. Cultivate children's curiosity about things and be willing to explore and experiment boldly.
4. Willing to try boldly and share experiences with peers.
5. Learn to record your findings in various forms such as language and symbols.
Activity preparation:
Teacher: Red saturated sugar water and transparent water.
Children: A rag is for everyone.
First operation: ordinary red water and transparent water (one for each person)
The second operation: ordinary red water and transparent water (one for each person),
Sugar (one for each group) spoon (one for each person)
The third operation: red saturated sugar water (one for each group)
Sugar (one for each group) spoon (one for each person) ordinary red water and transparent water (one for each person).
Activity flow:
First, teachers perform magic tricks to stimulate children's interest in activities.
1, import, children guess.
Teacher: Today, Teacher Xie is going to perform a magic trick for the children. Please have a look. What does the teacher have? Please watch carefully. What happens if the teacher pours the red water in his hand into transparent water?
2. The teacher's experiment.
Teacher: Please look carefully. The teacher slowly poured the red water into the transparent water. Can it be turned into two floors?
Second, children try to explore experiments.
1, try it.
Teacher: So, children, do you want to make this magical water? Now please try the water on the table and see if you can make such wonderful water.
2. Discussion:
Teacher: Have you succeeded, children?
Teacher: Why didn't you succeed? Think about it and talk to the children next to you. )
Third, show the mysterious additive "sugar" for children to explore.
1, show me the sugar.
Teacher: Because there is something new in the teacher's water, and there is nothing in your water. What is this? (sugar)
Teacher: There is sugar in the teacher's water, but do you see sugar? Where is the sugar?
Summary: Sugar is soluble in water, so we can't see it.
2. Children conduct exploratory experiments.
Teacher: Please try again with the materials on the table this time!
3. discussion.
Teacher: Children, did you succeed this time?
@ It worked. How did you do that? (share with you the method of success)
@ It didn't work. Why not add sugar? (children's discussion)
Summary: put a lot of sugar.
Fourth, it shows red saturated sugar water. Children's exploration
1, showing saturated red water, for children to observe and discuss.
Teacher: Please look at the teacher's red water with a lot of sugar. (Children watch and discuss)
Summary: The teacher's water is sticky.
2. Children's experiments.
Teacher: Let the children put their own things on the table, put a lot of sugar, and try again when the water becomes sticky!
3. discussion.
Teacher: Did you succeed this time?
(2) Teacher: Why does the sugar-red water sink? (children's discussion)
Summary: There is a lot of sugar in the water. When so much sugar is dissolved in water, the water becomes heavy. And heavy things will sink to the bottom of the water.
Verb (abbreviation of verb) promotion activities
Son, putting sugar in red water can turn it into two layers. What happens if you add salt?
And then what? What happens if you put sugar in transparent water? Go home and try it with mom and dad! Finally, clean the table yourself.
Teaching plan for scientific activities in kindergarten large classes 2: magic iodine
Activity objectives:
1. Through the operation attempt, the phenomenon that starch turns blue due to iodine is perceived.
2. This phenomenon can be used to solve practical problems.
3. Cultivate children's curiosity about things and be willing to explore and experiment boldly.
4. Fully experience "science is at hand" and generate interest in discovering, exploring and communicating in life.
5. In the activity, let the children experience the joy of success.
Highlights and difficulties of the activity:
Key point: Through operation, it is perceived that starch will turn blue when it meets iodine.
Difficulties: Try to use the principle that starch turns blue when it meets iodine.
Activity preparation:
Iodine, headdress of village head, steamed bread, carrots, potatoes, cabbage, biscuits, cucumbers, pear heads, bananas, milk powder, disposable cups and plates.
Activity flow:
1, know iodine
Hello, teachers (slow sheep) and children! I am the village head of Slow Sheep. Recently, I invented a magical potion-it's called iodine.
Question: Let's see what color iodine is. (Tan)
Teacher: Iodine has disinfection effect and can kill many bacteria. I am often used for injections, and bacteria run away when they see me, hahaha.
It was recently discovered that iodine can not only sterilize, but also has a wonderful phenomenon. Let's take a look at a steamed bread here, which is now iodized. Now let's see how steamed bread looks. Do you want to try it and see if other foods have this phenomenon?
2, children's operation
1) Give it a try
Drop iodine on food and observe the phenomenon.
Teacher's question: What did you find? Which foods have turned blue?
2) record
Which foods turn blue, tick the corresponding columns, and the teacher checks the foods that have objections.
3) Reveal the phenomenon
Do you know why some foods turn blue? Because they all have something called starch, which turns blue when it meets iodine.
3, problem solving-use
1) scene performance
Teacher: Grey Wolf, in order to earn some money to buy delicious food for red taro and grey ash, he used his crooked brain to open a milk powder supermarket.
Big Big Wolf, come and buy yo, cheap and thick milk powder. It turns out that he put a lot of starch in some milk powder cans, so it can be cheaper than supermarkets. So many villagers in Yangcun were bought and cheated, and the baby was malnourished. "
After the police uncle of the Health Bureau knew it, he came to check it. The sheriff has a question: please ask our clever children to help him think of a good way. What method can be used to detect the authenticity of milk powder?
2) think about it
What method can be used to test?
Look at the color, look at the taste, use iodine.
3) Move
Please try iodine. Which bottle is qualified and which bottle is unqualified?
Step 4 end the game
Teacher: unqualified milk powder has been found. The wolf was taken away by the police uncle. The magic medicine sent it to prison, and the village was calm again. Let the children go back and cook it to see if there is starch in those foods. Do a big survey about food starch.
Teaching plan 3 of scientific activities in kindergarten large class: artificial rainbow
moving target
1. Try to make "rainbow" in various ways.
2. Willing to communicate with peers and share the process of exploration.
3. Cultivate children's curiosity about things and be willing to explore and experiment boldly.
4. Cultivate children's interest in exploring scientific phenomena.
5. In the activity, let the children experience the joy of success.
Activities to be prepared
Choose a sunny day.
2. Some materials for making "rainbow": mirrors, large plates, transparent ballpoint pens, water, colored pigments, etc.
Activity process
1.
A child once saw a beautiful rainbow on a sunny day, but it soon disappeared. The child feels very sorry. He really wants a rainbow of his own.
-inspire children to find ways for this child who loves rainbows.
2. The birth of artificial rainbow.
-Provide all kinds of materials to guide children to come up with all kinds of ways and try to make a "rainbow". The rainbow in the room. Put water in a shallow dish, put the mirror into the dish obliquely, then turn the dish at the sun, let the sun shine on the mirror, adjust the angle of the mirror, and a "rainbow" will appear on the wall.
A drop of oil rainbow. Putting a drop of oil on a plate of water will also have a "rainbow" effect, but you need to adjust your perspective patiently.
Pen rainbow. Let the sun shine on the white paper through the transparent ballpoint pen. Turn the pen carefully, and a "rainbow" will appear on the white paper.
3. Exchange experimental results.
-after creating a rainbow, let the children appreciate each other.
-Guide children to communicate with their peers and demonstrate the process of making rainbows.
Not only have we helped the child, but we can easily have our own rainbow.
Activity suggestion
1. There are many ways to make artificial rainbows, so children should be encouraged to try boldly and let them experience the fun of discovery in independent exploration activities.
2. If the children are interested in the process of making rainbows, the teacher can extend the activity time and let the children fully explore.
3. Other ways to make a rainbow: For example, on a sunny day, with your back to the sun, you can form a "rainbow" with a sprayer: drop seven colors of oil painting pigments into water, gently stir them with a stick to make your favorite patterns, put white paper flat near the water surface, let colorful pigments be printed on the white paper, and dry them to make a rainbow painting.
Teaching plan for scientific activities in kindergarten large class 4: fun electric toys
moving target
1. In the process of disassembly and play, master the disassembly and assembly methods of electric toy batteries.
2. Actively participate in exploration activities, sprout knowledge and experience the happiness of success.
3. Willing to try boldly and share experiences with peers.
4. Fully experience "science is at hand" and generate interest in discovering, exploring and communicating in life.
5. In the activity, let the children experience the joy of success.
Activities to be prepared
Each person has an electric toy, a small plastic box, toys that won't move for various reasons, and several batteries: a battery recycling box: schematic diagram of battery installation.
Activity process
First, set the situation.
Teacher: Children's Day is coming. In order to express their love and let the children have a happy holiday, the uncles and aunts of the toy factory specially donated a batch of various toys to everyone. (Showing electric toys) Guess: "Can this little monkey play drums?" "Can dolls dance?" These toys are all electric toys.
The teacher asked: Why do these toys move by themselves? _ _ Inspire children to explore.
Second, the operation exploration (a)
1. Dismantle the electric toy.
(1) Teacher: Now the teacher gives everyone a toy. Children can play with it and see how the toy works. If you want to know the secret of toy movement, you can also take it apart and communicate with each other. What did you find?
(2) Children play with toys, and teachers tour to guide them, encouraging them to disassemble boldly and put the disassembled things in boxes.
(3) Question: What did you find in the toy?
Summary: There are batteries, springs and switches in the toy.
2. Install the battery.
(1) Teacher: The children opened their toys and found many secrets. Can you put it back and let it move by itself as before?
(2) children install batteries (there will definitely be children who can't move toys because the batteries are installed backwards, and so on. )
Three. discuss
1. Why can't the toy I moved just now move?
2. If the battery is installed backwards, how to install the battery correctly?
Guide children to know the "+"and "one" signs on the battery. And show the schematic diagram on the physical projector and ask the children to install the battery according to the schematic diagram.
Four. Operational exploration (2)
1. Teacher: Here are some electric toys my brother plays with. For some reason, these toys won't move by themselves. Please take them apart later and check the reason, then try to move them. You can think about it with the children next to you, or you can tell your good friends.
2. Explore the operation of children, encourage children to communicate with their peers and teachers and express their findings.
Ask questions:
(1) Have you found the reason why the toy can't move? How did you make it move again?
Summary: There are many reasons why toys can't move by themselves. Some batteries are installed backwards, some batteries are not installed, some batteries are dead, and some batteries have no springs.
The battery is dead. What should I do with this waste battery? Teach children not to peel them off and throw them away, but to put them in a "battery recycling box", because the contents in the battery are harmful to human body, and random dyeing will pollute the environment.
Five, play with electric toys
Teacher: Today, children have all kinds of toys. We can discuss holding a "toy exhibition" so that everyone can share the happiness brought by toys and have an unforgettable holiday.
Teaching plan 5 for scientific activities in kindergarten large classes: interesting megaphone
Activity objectives:
1, feel the secret of sound transmission.
2. Interested in scientific activities and willing to explore.
3. Cultivate children's curiosity about things and be willing to explore and experiment boldly.
4. Willing to try boldly and share experiences with peers.
5. Learn to record your findings in various forms such as language and symbols.
Activity flow:
First of all, children can play with hollow paper sticks freely according to their own interests.
1, guide children to observe the paper stick.
Teacher: Today, the teacher made a toy for the children. Take it and see what it looks like. The child found that the paper stick was long and round, and the middle was hollow.
2. Children play with paper sticks
Teacher: Each of you takes a paper stick as a toy and shows it to the teacher. How do you play?
Second, guide children to use paper sticks as "megaphones" and play games with each other freely.
1, the teacher said to the children with great interest: Just now, the teacher saw a child talking with his mouth aimed at a paper stick. Each of you has found a good friend. One speaks to a paper stick, and the other listens with small ears. Listen to your good friend.
Children play in pairs.
3. Question: Did the children hear what your good friend said?
Teacher's summary: This long and round hollow paper stick can spread what we say, so we call it the megaphone.
Third, find the problem and make friends with the little question mark.
1, ask questions:
Teacher: Just now, all the children heard the clear and loud words coming from the loudspeaker, but some children said they couldn't hear clearly. (Show some inaudible megaphones. ) What's the matter?
2, revealing a small question mark (? ) What's the difference between guiding children to observe these loudspeakers? Since it's the same, why is the sound not clear? I'm going to send a mark (show a small question mark card) to this microphone. Do you know what this symbol is? This loudspeaker brings us a problem.
3. The children began to play with the megaphone again (the megaphone was changed to a solid one).
The children found that the sound they heard was not clear. Why? Children naturally have questions, and then guide them to put question marks on these loudspeakers.
Fourth, observe and compare, and solve problems.
What is the difference between a microphone with a small question mark and a microphone without a small question mark? Let them find a paper ball with a small question mark on it in the microphone.