Scientific understanding of teaching plans in kindergarten large classes

Major science: understanding the characteristics of sound;

1, through experiments, let children know that objects vibrate to produce sounds, understand the characteristics of sounds, and arouse children's interest.

2. Let children know that noise affects people's health and teach them to develop the habit of not talking loudly.

3. Rich vocabulary: vibration and noise.

Activity preparation:

1, drum, drumstick, a frog wrapped in paper.

2. Various operating musical instruments: 6 copies of tambourine, candy paper, plucked string, Jason Chung, water cup and castanet.

3. 1 clocks, tape recorders and tapes.

Activity flow:

First of all, perceive the generation of sound.

(1) Show frogs and drums, and let children feel the vibration of sound.

1, show frog drum.

Teacher: What's this? (frog)

Who can make frogs dance on drums? (drumming)

Children discuss why frogs jump.

Teacher: Ask two children to touch it. What has happened to the drum surface? (vibration)

3. Know that vibration can produce sound.

What else do you hear when the drum surface vibrates? (sound)

What about now? When the vibration stops, so does the sound. (Fuzi: vibration)

(2) Children introduce themselves and touch the neck and throat with their hands, and experience that the vocal cords are also vibrating when they sound.

Teacher: Drum vibration can make sound. How do people make sounds? Let's touch our throats.

What about our throats when we don't make a sound?

Now please introduce yourself. What difference did you find?

(c) Let children perceive the sound generation through operation (divided into 6 groups)

1, I have many things here. Can you make them make a sound? Let's have a try! (6 groups of 6 colors)

Step 2 answer in groups

Teacher: You all tried just now. Now, send a representative from each group and say, How do you make these things make a sound? (。 . . . . . )

Second, the characteristics of perceived sound

1, let children know that sound is transmitted through the air.

(1) Please 1- Two children come up and play musical instruments (castanets and bells).

Teacher: Now, I want to play a game with the children. Ask a child to come up and do this action. Please guess what he is doing.

How did you know?

Through what did the sound of castanets and bells reach your ears? (air)

2. Perceive the size of the sound

(1) The teacher plays drums. Do you hear the drums?

(2) The teacher took out a clock for the children to listen to (not for the children to see).

Teacher: What sound do you hear now? (Yes: What kind of sound do you hear)

Hold the clock so that every child can listen.

(3) Teacher's summary:

Sound travels through the air. Without air, we can't hear the sound from other places, which is very loud and travels far. The sound is small and the spread is close.

Third, know that noise is harmful to human body and teach children to protect their voices.

1, please tell your child what other sounds you have heard in your life? What sounds do you like to listen to?

Step 2 play the recording

Teacher: Do you like the sound in the recording? Why? What makes people uncomfortable is the noise.

3. Summary:

In life, some sounds are beautiful and pleasant to hear, which makes people feel comfortable, while noise will endanger people's health. In normal times, we should not speak loudly, so we should protect our voices.

Fourth, save the sound.

Teacher: Spring is a beautiful season. Let's celebrate together!

Now let the children find their own things and make a wonderful sound for the spring music!

1, the child hummed with the teacher.

Let's record these wonderful sounds with a tape recorder! (Instructor's orders. . . )

The conclusion part of verb (abbreviation of verb)

Target of cloth water absorption competition (science):

1, children know through experiments that different fabrics have different water absorption, and the same fabric has different water absorption in different liquids.

2. Let children experience the fun of free exploration and the joy of success through hands-on operation.

3. Enhance children's awareness of cooperation with their peers.

Activity materials:

Cotton, silk, wool, rayon and polyester cloth are cut into strips with a width of 10 cm and a length of 25 cm, long sticks and pots, with the same number of record cards as children, and various liquids: clean water, hot water, soapy water and vinegar.

Activity flow:

First of all, introduce the situation and arouse interest.

Watch the video: "Summer is coming. Xiaohong has several pieces of cloth at home. She wants our children to help her choose a piece of cloth to make a summer skirt. She wants this skirt to be beautiful, comfortable and cool. Which one do you recommend? "

Second, understand the fabric and make predictions.

Show all kinds of fabrics. Children can touch and have a look, talk about their differences and know their names.

Show the children's record cards, let them discuss and make predictions freely, draw "√" on the prediction column under the cloth you think is appropriate, and give the reasons.

Child Record Card (1)

Note: In the column of experimental results, the numbers 1, 2 ... are used to rank the water absorption degree (water absorption speed and water absorption amount) of various fabrics.

Predicting experimental results

Third, children's experiments, record the results.

1, "How do we know whether the fabric you chose for Xiaohong is good or not? Which fabric has the strongest water absorption? Let's try it ourselves. "

2, the children do the operation, and the teacher explains the experimental requirements: as shown in the figure.

Children record the experimental results and discuss the findings in the experiment.

4. According to the experimental results, children discuss and pass on their experiences according to the water absorption of various fabrics in daily life.

Summary: We can make clothes or underwear with high water absorption and good air permeability, while those with weak water absorption, such as polyester fabrics, can be made into waterproof and windproof clothes such as windbreakers and raincoats.

Fourth, the child experimented again to see if the same cloth and different liquids absorbed the same amount of water.

1, provide children with several different liquids: clean water, hot water, soapy water, vinegar, and let children choose the same cloth and put it in different liquids, and then conduct experiments.

2, children operate, and record the experimental results.

Children's Record Card (2)

Note: In the column of experimental results, the numbers 1, 2 ... are used to sequentially discharge the liquid absorption height of clothes.

experimental result

3, children discuss the findings in the experiment, and combine the experience in daily life to migrate.

Summary: The same fabric is soaked in different liquids, and its water absorption and dissolution rate are different. Therefore, when washing clothes with various fabrics, we will soak the clothes with hot soapy water or other washing products to achieve better decontamination effect, but it is difficult to decontaminate only with water.

Precautions:

1. When doing the first experiment, pay attention to hanging five kinds of cloth on a long wooden stick and putting it into the water for observation at the same time to ensure the accuracy of the experiment.

2. When doing the second experiment, pay attention to putting the cloth into different liquids for basically the same time.

Knowledge background materials:

Before lunch, I asked the children to wash their hands in the bathroom. When I came back, Tintin told me that she accidentally wet her sleeves when washing her hands. I saw it was really good, even the sleeves inside her were wet. At this time, Wen Wen also squeezed into my side, raised his sleeves high and proudly said, "My sleeves won't get wet when they are wet." It turned out that she had a pair of polyester sleeves, which many children thought was quite strange. Why are some sleeves easy to sell, while others are not? In this regard, I designed this activity to let children know the truth through their own operations and further stimulate their desire to explore the mysteries of science.

Science lesson plans for large classes: interesting shadows 1. Guide children to get the perceptual experience about "light and shadow".

2. Understand the role of shadow and arouse interest in this natural phenomenon.

3, guide children to actively participate in operational activities, stimulate children's interest in exploration and curiosity.

I. Purpose of the activity:

Second, the activity materials:

Third, the activity process:

1, images of various objects cut by colored paper, three-dimensional toys, shadow chessboards.

2, some white paper, flashlight, glue, a piece of recording paper.

3. Some pictures of shadowless lamp.

1 Arouse children's desire to explore by telling "the shadow I know".

Teacher: Do you know what shadows are like?

Teacher: Today, we have prepared four groups of materials to play with shadows. These four groups of materials are all different. You can choose your favorite materials to play with, draw a picture and see what you find.

Children understand the relationship between shadow and light by playing with shadow.

Teacher: What did you find? (A single child demonstrates and introduces the recording results)

Teacher: (sorting out records) When the position of light changes, the shadow will also change; When the position of the object changes, the shadow will also change.

(Figure 1) When the light level is high, the shadow is short. This is because objects block less light.

(Figure 2) When the light is dark, the shadow is long. This is because objects block more light.

3. Play the "shadow chessboard" with the perceptual experience of light and shadow.

Play: Children in pairs, choose red squares and blue squares respectively. Take turns to shine the shadow of the watercolor pen in the middle on the opponent's chessboard. The farthest stop of shadows on different constellations can get different stars. See who has the most stars.

4. Various applications of shadows in daily life.

Teacher: Shadows are everywhere in our lives. What role does it play in people's lives? When do we not need shadows?

5, extended activities: stepping on the shadow.

6. Parent-child activities: making shadow clocks

Fourth, matters needing attention

For the effect of activities, it is best to cover the windows of the activity classroom with anti-ultraviolet curtains.

Verb (abbreviation of verb) knowledge background material:

Shadow condition: the object blocks light and has a shadow.

When the light is dark, the shadow is long. This is because objects block more light.

The light level is high and the shadow is short. This is because objects block less light.

Major scientific activities: bridge designers

Teaching objectives:

1, through children's own observation of experimental phenomena, cultivate children's orderly and patient good observation habits and keen observation ability.

2. Cultivate children's interest in understanding and exploring the scientific principles contained in common things in life.

3. Cultivate children's ability to solve problems through their own operations.

Teaching preparation:

Prodigy computer software, bridge exhibition, pen and paper.

Teaching process:

First, arouse children's interest in the form of stories:

There is a small ditch in front of the bear's house. It's worried about what to do to cross the other side. Children, can you help bear find a way? Little bear's good friend, the clever monkey, also helped him think of a way. Let's hear what it is. Is it what we think?

Second, ask questions while watching prodigy software:

1. Where do smart monkeys and bears come from? What bridge do you see? What did ancient people use to build bridges? Does bear like it? Why?

2. Which bridge did the clever monkey and bear come to? What was Zhao Zhouqiao built of? What is its shape? What's the difference between Zhao Zhouqiao and Zhu Qiao?

3. What bridge did they see when they came to modern times? What is the steel suspension bridge made of? What's special about reinforced suspension bridge in structure? What is the function of reinforced suspension bridge? Which steel suspension bridges have you seen now?

4. After seeing the steel suspension bridge, what bridge did they see? Where is the modern overpass built? What is it made of? What role does it play in traffic? Where do you see the modern overpass?

Besides the ancient bamboo bridge, Zhao Zhouqiao and modern steel suspension bridge and overpass introduced by the clever monkey, what other bridges have you seen?

6. Let's get into the computer and look at some bridges with different materials and different uses.

We have seen so many bridges, which one do you like best? Why?

Bell wants to build a bridge now. I want to ask children to be a small bridge designer and help bear design a bridge, ok?

Five, children design bridges.

6. Ask some children to introduce his design works to everyone, and finally give them to the bear.

Large class science teaching plan: the generation of interesting crab questions;

In the theme activity of "Earth, Our Common Home", we mainly introduce the animals of the seventh planet from the small class. So the children and teachers collected several kinds of animals, such as rabbits, goldfish and hermit crabs. The children were very interested in these living animals.

In the season of "chrysanthemum fragrant crab fat", the children ate crabs, and they brought crab shells. They said: the cooked crabs are red. Parents don't let their children play with live crabs because the big pliers of crabs will pinch people, but children have a strong interest. So we designed this activity to provide conditions for children and create opportunities for them to explore.

Activity objectives:

1, fully experience the joy of exploration activities.

2. Understand the shape and crawling direction of crabs and learn some simple observation methods.

3. Encourage children to explore bravely and accumulate some life experience.

Activity preparation:

1, forty little crabs and two big crabs.

2. Twenty small plastic boxes and four large plastic boxes.

3. A clip, chopsticks and gloves.

4, basin, water, dishcloth, transparent cover rice cooker, etc.

Activity flow:

1, the teacher asked: Do you know crabs? Did mom and dad let you play at home? (No) Why?

Child L: Because crabs are fierce.

Child 2: It has big pliers.

Toddler 3: Pinch someone.

2. The teacher said: Will the teacher play crab with you today? (OK) But be sure to pay attention to the crab's big pliers.

Children observe crabs:

Children 1, just watch and don't do it.

Baby 2, I tried to touch it with my hands, but I stopped halfway.

Baby 3, touch it with your hand and shrink it immediately.

Child 4, pick up the chopsticks on the side and play. If you catch a crab, you will bark. Laugh when it falls.

Children are sitting on the carpet.

The teacher asked: Did you have a good time? (happy)

The teacher said: Small animals bring us happiness. They are our good friends.

The teacher asked again: What does a crab look like?

The children spoke freely and the teacher listened around.

Baby 1, with a shell on his back, is grayish black.

Baby 2, with eyes, turns red when cooked.

Baby 3 has three feet.

Baby 4, no, it has four feet.

4. The teacher said: How many feet does a crab have? Let's count.

5, the teacher demonstrated, put on gloves to catch crabs.

Teacher reminds: You can catch the crab in a small box and take a closer look at what the bottom of the crab looks like.

6, washbasin, water, dishcloth, transparent cover two electric cookers, etc.

Children's courage, intelligence and ability have been improved to varying degrees in the activities. In addition, teachers purposefully guide children to observe in many ways and learn some scientific knowledge, so that children can be smarter in future exploration activities.

However, during the activity, I think it is more difficult to count live crab legs, so I can wait until the crabs are cooked.

Expert comments:

It may be more appropriate to list this activity as a life activity. From the whole process, there are not too difficult knowledge points, but the teacher puts the spirit of exploration in the first place, which reflects the desire of large class children to learn and is worth learning from. Kindergarten teaching activities do not necessarily have many difficulties to break through every time, as long as they can stimulate the desire for knowledge, sprout interest in learning and develop good study habits, such activities are good activities.

Reflection and discussion:

This activity was designed for small classes, but now it is designed for large classes. What modifications and additions do you think should be made?

The activity goal of the science lesson plan "changeable weather" for large classes in kindergarten

1. Stimulate children's interest in observing weather.

2. Understand the common weather conditions and know how to understand the weather conditions.

Understand the relationship between the weather and our life, and try to design a weather forecast table.

Activities to be prepared

Courseware and forms

Interesting practice

Activity process

First, understand the relationship between meteorology and military affairs.

1. Let the children enjoy a short story first.

There is a very clever man named Zhuge Liang in the story. He used the weather to make 654.38 million arrows in three days. How did he do it?

2. Let children think through stories. How did Zhuge Liang know it would be foggy?

Second, understand the common and bad weather conditions, and know how to understand the weather.

1. Besides foggy days, what other common weather do you know?

2. Know some bad weather conditions. And watch courseware.

How do you know the weather?

(SMS, TV, newspaper, etc. )

Appreciate a weather forecast and know its main contents.

Weather, temperature, dressing index, etc. )

Third, understand the relationship between the weather and our lives.

1. Interesting question and answer

Teacher: The weather has a lot to do with our life. I will test you today.

(1) How to escape the heat in hot weather?

(2) How to maintain yourself in thunderstorm weather?

(3) What do you need to prepare when you go out in rainy days?

Fourthly, try to design a weather forecast table.

Teacher: The weather is closely related to our life. So we should care about the weather and learn to maintain ourselves according to the weather changes.

The teacher prepared a table for everyone, with three columns: weather, temperature and warm tips.

2. Let the children be weathermen and record the weather on the form.