Teaching plan for children's scientific activities in large classes

Activity objectives:

1. Perceive the speed of free fall and be interested in exploring scientific mysteries.

2. Find out the phenomenon of free falling of different objects.

3. Learn to record the falling speed of two different objects with statistical tables.

Activity preparation:

1. Two items with obvious light and heavy contrast (one for each person). Such as sandbags and foam boards, feathers and plasticine, plastic bags and iron plates, cloth pieces and plastic toys.

2. Two pieces of paper of the same size.

3. Several items with the same quality and shape but different sizes. For example, triangle iron, milk bottle, beverage bottle and potato chip box of the same size.

4. There are three big statistical tables, which respectively represent the decline of three kinds of articles. Each person has a sub-statistical table.

Activity flow:

(1) Explore the falling phenomenon of two objects with different weights.

1. Show sandbags and foam

Let the children guess: "What will happen if these two things fall?"

2. Experimental sandbags and foam falling.

Question: "What did you find when these two items fell? Why? " (light is fast, heavy is slow)

Children are free to explore two different projects.

Requirements: (1) Two items should be placed at the same height.

(2) Exchange two kinds of goods with friends.

4. Summarize the conclusion and make statistics (summary, heavy items end quickly, light items end slowly)

Teachers come up with big data to help children understand how to record.

5. Children make their own statistical conclusions, summarize the statistical situation and show statistical tables.

(2) Explore the falling phenomenon of items with the same mass but different shapes.

1. Take out two pieces of paper of the same quality and size and knead one of them into a ball.

Let the children guess: who will fall fast?

2. Try it, son.

3. To sum up, small shapes fall quickly. And record it on the big statistical table.

(3) Explore the falling phenomenon of items with the same quality and shape but different sizes.

1. Show me triangles of different sizes. www。

(1) Let the children talk about their similarities (quality, shape) and differences (size).

(2) Guess: Who landed first? Or is there something else?

2. Experiment. The conclusion is: landing at the same time.

3. Verify and display bottles and potato chip boxes of different sizes.

4. Record the conclusion on the big statistical table.

5. Tell me, what else in our life falls like this at the same time?

Changeable weather

moving target

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 "Grass Boat Borrows Arrows" 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.

Exploring knowledge: how information is disseminated.

1, activity target:

1) Children can actively collect and transmit information from different channels and in different ways.

2) Children learn about different information transmission channels in activities and learn to use different information tools.

2. Activity preparation: Children learn relevant knowledge through inquiry and interview.

3. Activity flow:

1) Communication: I know the way of information transmission. Children can be inspired to consider the following aspects: signaling with objects, signaling with sounds, and signaling with words. Such as: sending signals through gestures, semaphores, fireworks and other objects; Send signals by blowing horns, ringing bells, drumming, broadcasting telephones, etc. ; Send signals by carrier pigeons, post office delivery, fax, e-mail, etc.

2) The teacher uses pictures to tell the story of people transmitting information. For example, fireworks were set off on the beacon tower of the Great Wall in ancient times to convey the enemy's situation; During the War of Resistance against Japanese Aggression period, the enemy's whereabouts were reported by knocking down the message tree.

3) Discussion: How do people convey information nowadays? Guide children to understand common communication tools.

4) Organize children to play communication games and make phone calls: The teacher divides the children into two groups and whispers to the first person in each group. After the start, they will be sent back one by one, and the last one in each group will report the phone content. The team that passes quickly and accurately wins.

4. Activity expansion:

1) Organize children to operate computers by themselves.

2) Provide semi-finished materials in the activity area, learn to make these communication tools, and provide props for children to play role games.

Water flows to other cups.

Design intent:

The experience of water freezing and melting, the change of water vapor into water droplets, and the secret of sinking and floating are dissolved.

1: Provide different materials, and suggest children to think about how to make the submerged materials float on the water surface or let the submerged materials sink into the water. For example, make a boat out of toothpaste skin, or nail small nails on building blocks. sink and rise

2 (Standing stick): Put the stick into the water and find it lying on the water. If you stick a big piece of plasticine on one end of the stick, or nail a big nail, you can make it stand up.

Activity objectives:

Using a variety of materials, the process of playing with water is full and interesting.

Activity materials:

Beverage tube, paper, toothpaste skin, foam plastic, small building blocks, plastic, vegetable leaves, small porcelain, bamboo chips, nails, small stone water pipes, bamboo chips, water containers, colored ink and other activities. On a hot afternoon, children are playing with water. Today, there are abundant materials, but there is one condition: each person only gives a basin of water, and the water will be saved, and it will be gone when used up. There are 3 groups of water pipes, 2 groups of water cups, 3 groups of water bottles, water curtain caves 1 group, ups and downs, user-defined gameplay.

"Water flows to other cups" group; She Xinrui, Zhang, Qin, Lu, Ban

The children connected three cups with two pipes and slowly poured a glass of red water into the cups to play with. They found that the red water in one cup flowed into another cup through the connected drinking pipe, and the three cups turned red slowly. The children are very happy. The drinking pipe delivers water, and three cups of red water flow horizontally for the first time, and the water does not flow.

* Zhang observed again and suggested adding water to one of the cups. She Xinrui: The water flowed through the pipe, and three cups of red water flowed horizontally for the second time, but the water did not flow.

* The teacher reminds the child to find a way to make a glass of water higher and observe what will happen. Lu took two pieces of soil from a nearby small vegetable garden, raised a cup with his attendant, and red water flowed out again.

* Just do it over and over again. Qin stirred the water with his fingers, but the red water was not as red as before, and it became weak.

* The teacher said: Why does water flow?

Lu said: the water should have a slope.

Compare the relationship between water level height and flow velocity, and understand the characteristics of water flowing from high to low. Understand the relationship between water quantity and color depth change.

Bridge designer

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.

Use of rope

Activity objectives:

1, learn about all kinds of ropes in life and their uses.

2, willing to carry out creative activities, like to share with peers.

Activity preparation:

1, Chinese character card: hang, tie, tie and string (I know all these four Chinese characters).

2. Clothes, towels and pictures; Shoes without straps; All kinds of beads with holes; The boxes are divided into four groups.

3. Collect some photos about the rope.

4. Treasure chest: rope, clothes rack, clip, scissors, etc. There are different materials, thicknesses and lengths.

Activity flow:

Understand the material first and lead to the theme of the rope.

Teacher: Look, what's on the table?

(Showing four Chinese characters) Teacher: Can these words be friends with something with a rope on the table?

Second, try it in groups. What is the purpose of the rope?

1, Teacher: The teacher divided them into four groups, with a word in the middle of each group. After reading this word, you should use your brains in groups of four to change the things on the table!

2. Each group of children shows their achievements.

Teacher: What's that on your desk? What changes have taken place?

Third, talk about the used rope.

Teacher: What did you do just now?

What rope did you use? Teachers and children summarize the use of ropes together, so that children can understand the characteristics of various ropes.

For example, cotton rope is very soft, and it doesn't hurt to hit the face: nylon rope is relatively strong and can be used to hang heavy objects; Plastic rope is used to jump rope …

Fourth, play with the rope.

Teacher: Ropes can also be used for playing. I have some ropes here, and everyone is too few. You can play a rope with a few good friends and see which children can play new tricks with the rope.

In the process of playing, discover new ways of playing in time and guide children to cooperate.

Five, the rope in life

Teacher: Great boy! We tied, strung, tied and hung different ropes just now. Where else did you find the rope in our life?

1, children discuss freely

2. Play photos of various ropes.

Teacher: There are still many ropes to be naughty in life. It's hard to find them in hiding. Teacher Jin will find these ropes. Let's have a look. Where are these ropes hidden? What's the use?

Sixth, the end.

There are so many useful ropes in life that the children downstairs can't wait. Let's tell them what we learned and played today!

Self-defense skills of animals

Default target:

1. Discover several self-protection methods adopted by animals in order to survive.

2. Germinate an interest in exploring the mysteries of animals.

3. Further deepen the understanding of animal self-protection through physical performance.

Activity preparation:

1, multimedia courseware, music.

2, small animal headdress, "tail" woven with crepe paper, 4 jelly bottles.

Activity flow:

First, the game: hide and seek.

1, let's play hide and seek. Let me count 1, 2, 3 children hide.

2. Discussion: Why do I find some children and I can't find some children?

3. The teacher's summary.

Second, the stealth coup.

1, learn about the stealth tricks of small animals.

Teacher: Small animals are also playing hide and seek. Please look carefully and tell everyone what animals you have found and where you are hiding.

Watch the courseware: the animation of butterflies flying to the branches, lizards lying on the mound and frogs drilling into the grass. )

2, physical performance: dead leaves butterflies fly to the branches.

Lizards lie on the mound.

The frog got into the grass.

3. What skills do these animals have to protect themselves?

Summary: Invisibility. In nature, in order to protect themselves and survive better, some animals' body colors and stripes are very close to their living environment to hide themselves and avoid enemies.

4. Inspire children to tell which animals have stealth skills?

Third, discuss the unique skills of animals in self-defense.

1, do you know what other ways animals can protect themselves?

2. Look at the courseware. Before reading, ask, "Notice which animals are in it, and how do they protect themselves?"

Question: What kind of animal do you see and how does it protect itself?

Name one and click on the corresponding word baby and the head of the corresponding animal. )

Armor: tortoise

Hard thorn: hedgehog

Running: deer

Self-cutting: Gecko

Smell: Weasel

Play dead: fox

3. Discussion: What other animals protect themselves in the same way?

Summary: Small animals are very smart. They thought many ways to protect themselves, some-some-and so on. They are really powerful little animals.

Fourth, self-defense.

The teacher showed all kinds of animal headdresses. Who did the children answer? How do you protect yourself?

Now let's play a game. Children can become any kind of small animals. Wear headdress and play music. Hey! What happened? The tiger is out, what should we do? You have to become a small animal to protect yourself and see who imitates the most!