Mathematics teaching plan for large classes: countdown

As a diligent educator, we often have to write an excellent teaching plan, and use it to properly select and use teaching methods to arouse students' learning enthusiasm. How to write lesson plans to play a better role? The following is the math teaching plan for the big class I compiled: Countdown, welcome to read and collect.

Mathematics teaching plan for large class: countdown 1 activity target;

1. Understand the meaning of countdown and be interested in the method of countdown.

2. Experience the relationship between countdown and our life.

Activity preparation:

PPT courseware, rocket launching video, big calendar, each group of pens.

Supporting courseware: PPT courseware for big class mathematics courseware "Countdown"

Activity flow:

First, import.

PPT demo countdown: "Do you know what countdown is?"

Summary: Countdown is to count the time backwards, which is called countdown.

Second, look for the countdown to life.

Question: Where have you usually seen countdown?

(1) Illustration: electric fan.

Teacher: A Let's see where the countdown on the electric fan is.

Do you usually use the countdown on the electric fan?

Who used it? (Mom, children)

Why does mom use the countdown on the electric fan?

Mom sets the countdown. Don't catch a cold after sleeping.

Teacher: Mom really cares about our children. By the way, falling asleep after the electric fan is set for countdown can prevent us from catching cold. With the countdown, we can protect our health.

Yang: Save electricity. Why do you save electricity? )

Teacher: By the way, now we advocate a low-carbon life and save water and electricity. With the countdown timer, the electric fan will automatically turn off after we fall asleep, saving more electricity.

Summary: Through the countdown on the electric fan, we can turn off the electric fan when the children are asleep, prevent us from catching cold, save electricity and realize a low-carbon life. The countdown is really useful!

Teacher: The rocket launch needs a lot of preparations from many scientists, uncles and aunts to ensure the success of the rocket launch. With the countdown, they can listen to the unified password and make preparations together.

Teacher: By the way, our rocket from China is about to go into space. Everyone in China is very excited and looking forward to this moment.

Summary: By the way, the countdown before the rocket launch reminds us that the uncles and aunts of scientists should concentrate together and make final preparations. At the same time, let all of us in China remember this important moment, and remember that we are really great in China.

(4) Show pictures: traffic lights

What does the countdown to the traffic lights tell us?

Summary: The numbers on the green light tell us that the longer the crossing time is, the safer it is, and the shorter the crossing time is, the more dangerous it is. With the countdown, it is safer and more convenient for us to cross the road.

(5) Show pictures: countdown advertisements

What TV program do you watch with an advertising countdown? Why is there an advertising countdown? I know how long I have to wait. I'm not in a hurry. Please tell me if it's too late to go to the bathroom. )

Summary: With the countdown to advertising, you can know the waiting time, so you won't be in a hurry.

Conclusion: Countdown is used in many places in our lives. Some countdown uses "seconds" (rocket launch, New Year bell), some countdown uses "minutes" (electric fan, microwave oven, oven), and some countdown uses "days". Different places have different uses. Countdown has a lot to do with our life.

Transition: Do you want to count down? What do you want to do in countdown?

Third, try to design the countdown.

1, exchange and discuss the countdown method.

2. Stimulate children's desire to count down.

June 1 is coming soon. Let's make a countdown card together.

Find out what festivals are there in June.

Question: What's the date today? What date should we find besides today's date?

3, children's operation, teachers observe children to take the countdown method.

4. Exchange questions: June 1 A few days ago? How to calculate it?

(1, reciprocal 2, reciprocal 3, two numbers)

5. One month plus extra days-is a month 30 days?

6. Why is the difference between days one day? June 1 doesn't count. Why not?

7. Summary: With the countdown to June 1 day, we can clearly know that there are still several countdown days from today to June1,so we can make preparations during this period.

World Environment Day, 8, 6.5.

9. Lead out the countdown to leaving the park and let the children do the countdown to leaving the park.

Mathematics Teaching Plan for Large Classes: Countdown 2 Activity Objectives:

1. Understand the meaning of countdown and be interested in the method of countdown.

2. Experience the relationship between countdown and our life.

3. Understand the application of numbers in daily life, and preliminarily understand the relationship between numbers and people's lives.

4. Experience the life of mathematics and the fun of mathematics games.

Activity preparation:

Related ppt, big calendar, each group of pens.

Activity flow:

First, import

Display "countdown": "Do you know what countdown is?"

Summary: Countdown is to count the time backwards, which is called countdown.

Second, look for the countdown to life.

Question: Where have you usually seen countdown?

1) child: electric fan.

Teacher: A Let's see where the countdown on the electric fan is.

Do you usually use the countdown on the electric fan?

Who used it? (Mom, children)

Why does mom use the countdown on the electric fan?

Child: Mom starts the countdown. I don't catch a cold when I fall asleep.

Teacher: Mom really cares about our children. By the way, falling asleep after the electric fan is set for countdown can prevent us from catching cold. With the countdown, we can protect our health.

Child: Save electricity. Why do you save electricity? )

Teacher: Yes, now we advocate a low-carbon life. We should save water and electricity. With the countdown timer, the electric fan will automatically turn off after we fall asleep, saving more electricity.

Summary: Through the countdown on the electric fan, we can turn off the electric fan when the children are asleep, prevent us from catching cold, save electricity and realize a low-carbon life. The countdown is really useful!

2) children: microwave oven

Teacher: Did you see what was written on the timer on the microwave oven? There are different lengths of time, such as one minute, two minutes, 30 minutes, etc. )

Teacher: Why do you have different times? (Is there a countdown in the home appliance industry? )

Conclusion: We can determine different times according to different foods, which not only ensures that the food will not be burnt, but also can do other things without our supervision, which is both safe and convenient.

3) Rocket Launch: Today, the teacher brought a short video of rocket launch. Shall we go and have a look? (Watch the video)

How to pronounce the final countdown to rocket launch? When the rocket is launched, we must count down to ten seconds. )

B Why did you count down a few seconds before the rocket was launched? Let's get ready together. Everyone is very excited and looking forward to this moment.

Teacher: The rocket launch needs many scientists' uncles and aunts to do a lot of preparatory work to ensure the success of the rocket launch. With the countdown, they can listen to the unified password and make preparations together.

Teacher: By the way, our rocket from China is about to go into space. Everyone in China is very excited and looking forward to this moment.

Summary: By the way, the countdown before the rocket launch reminds us that the uncles and aunts of scientists should concentrate together and make final preparations. At the same time, let all of us in China remember this important moment, and remember that we are really great in China.

4) traffic lights

What does the countdown to the traffic lights tell us?

Summary: The numbers on the green light tell us that the longer the crossing time is, the safer it is, and the shorter the crossing time is, the more dangerous it is. With the countdown, it is safer and more convenient for us to cross the road.

5) advertising countdown

What TV program do you watch with an advertising countdown? Why is there an advertising countdown? I know how long I have to wait. I'm not in a hurry. Please tell me if it's too late to go to the bathroom. )

Summary: With the countdown to advertising, you can know the waiting time, so you won't be in a hurry.

Conclusion: Countdown is used in many places in our lives. Some countdown uses "seconds" (rocket advertisements, New Year bells), some countdown uses "minutes" (fans, microwave ovens, electric blankets), and some countdown uses "days". Different places have different uses. Countdown has a lot to do with our life.

Transition: Do you want to count down? What do you want to do in countdown?

Third, try to calculate the countdown.

1, exchange and discuss the countdown method.

2. Stimulate children's desire to count down.

June 1 is coming soon. Let's make a countdown card together.

Find out what festivals are there in June.

Question: What's the date today? What date should we find besides today's date?

3, children's operation, teachers observe children to take the countdown method.

4. Exchange questions: June 1 A few days ago? How to calculate it?

(1, countdown 2, countdown 3, two numbers,

5. One month plus extra days-is a month 30 days?

6. Why is the difference between days one day? June 1 doesn't count. Why can't it count)

7. Summary: With the countdown to June 1 day, we can clearly know that today is 6. 1 interval has a few days to count down, so you can get ready during this period.

8、6。 5 World Environment Day countdown.

9. Lead out the countdown to leaving the park and let the children do the countdown to leaving the park.

Mathematics Teaching Plan for Large Classes: Countdown 3 Activity Objectives:

1. Calculate the time by counting backwards and understand the meaning of "countdown".

2. In the process of finding festivals, it is convenient for us to experience the countdown.

Activity preparation:

1, countdown PPT.

2. Every child has a self-made calendar and pencil for June of XX.

Activity flow:

Link 1: Talk about countdown (perceive the "countdown" on the signal light and understand the meaning of "countdown". )

1, let's see: countdown

Insert 1: PPT Question: What do you see? What do the numbers on the green light tell us?

Summary: The numbers on the traffic lights count down from big to small.

Box 2: PPT question: What are the numbers shown in the green light on this picture? What does this mean?

Situation: My brother is holding his mother's hand and crossing the road. Her mother said, "Look, there are only three seconds left in the green light, and it will turn red soon. Let's wait for the next green light, so it's safer to cross the road. "

Interrupt 3: PPT question: How many seconds does this picture show?

Situation: Grandma sends her sister to kindergarten. When she walked to the crossroads and saw the green light flashing, she said to her sister, "Let's wait!" " My sister said, "Grandma can do it. There is still a long time from 18 seconds to the red light. "

2, induction

It turns out that we can calculate the transit time by counting backwards. "Long time" means safe crossing the road, while short time means dangerous crossing the road. Be sure to take the time to go, not when you shouldn't.

The countdown time is called "countdown".

Step 2: Find the "countdown" (experience the relationship between "countdown" and our life)

1, looking for the "countdown" of life

Olympic opening screen, rocket launch, New Year countdown, microwave oven, washing machine, World Expo countdown.

Step 3: Calculation: Father's Day "countdown" (experience the convenience brought by "countdown" to our lives)

1, children's operation: How many days are there from today to Father's Day?

Important and difficult

Look for the locations of June 10 and June 20th on the calendar.

What are those days?

Link 4: Activity Extension

June 30th this year is a special day for you. You are going to graduate, so how many days before graduation? Can you work it out?

Mathematics teaching plan for large classes: the goal of penultimate 4 activities

1. Understand the meaning of countdown and be interested in the calculation method of countdown.

2. Experience the convenience that the countdown brings to our life.

Activities to be prepared

Some related pictures, calendars, pens.

Activity process

First, simulate the traffic lights crossing the road.

1. Import: The teacher took two photos on the road the other day. What's the difference between these two photos?

Thinking: Does the different number of pedestrian traffic lights have anything to do with us crossing the road?

2. Simulate crossing the road (two children successively simulated crossing the road, and the rest counted backwards).

3. Tell me what they found: the number here is reciprocal, the number is getting smaller and smaller, and the time is getting shorter and shorter. ...

Experience: The numbers on the green light tell us that the longer the time, the safer it is to cross the road, and the shorter the time, the more dangerous it is to cross the road. With the countdown, it is more convenient and safe for us to cross the road.

4. How do the numbers on the green light change? (Understand that counting the number from big to small by counting backwards means that the time is from changeable to less)

Second, look for the countdown to life.

1. Talk about the countdown phenomenon in life.

2. The teacher shows the photos in turn to understand that there are many countdown phenomena in our life.

3. It is further found that when countdown is used, some countdown uses "seconds" (Olympic opening ceremony, rocket launch, etc. ), some countdown uses "minutes" (electric fans, microwave ovens, electric blankets), and some countdown uses "days" (World Expo).

Third, try to calculate the countdown.

1. Stimulate children's desire to count down: On March 20th, we will go for a spring outing. Let's make a countdown card for a spring outing together.

Thinking: What's the date today? Besides finding today's date, which date should we find?

2. Communication adopts the method of calculating countdown, such as: countdown; Two two numbers; Countdown; The day of spring outing is not waiting.

3. It is found that with the countdown to the spring outing, we clearly know that there is still 1 1 day before the spring outing today, so we can prepare for the spring outing during this time.

Activity expansion

1. Make countdown cards for the recent festivals.

2. Make a countdown card to leave the park.

Mathematics teaching plan for large classes: countdown 5 design ideas;

We live in a digital world, and numbers are everywhere. Similarly, children's lives are inseparable from numbers. This activity is to intercept the numbers that children pay attention to as the content in the theme activity of "People around us", and use the inspiration of "countdown to life" to let children discover and understand the numbers in life and the mysteries between them through experiential review, comprehensive form, gamification process and life-oriented content.

It is pointed out in the outline that the design of teaching activities should be based on children's original experience, not only to understand children's existing experience, but also to provide new experience. On weekdays, children have mastered the points within 10 through counting, counting and other games, and have a certain interest in mathematics learning. On this basis, in order to further consolidate children's understanding of logarithmic concept, teachers can carry out "countdown" activities through collective teaching and other ways to develop children's reverse thinking ability.

Activity objectives:

1, learn about the countdown in life and experience the countdown function initially.

2. Perceive the number change from more to less in the countdown.

Activity preparation:

Numbers in Life ppt, digital card

Activity flow:

(1) Experience reappearance:

1, remember the number of the road:

Key questions:

(1) Last time we went to the street to look for numbers, where did you find them? (Reprinted by ppt according to the children's answers)

(2) What do these numbers mean?

Summary: Some numbers indicate identity, some numbers indicate price, and some numbers indicate time.

2. Watch the video:

Key questions:

(1) Have you ever seen the ever-changing numbers on the roadside?

(ppt shows the digital changes of traffic lights)

(2) How do the numbers change?

Conclusion: If we count the time from more to less, we call it "countdown". Countdown can make us ready to do things.

(3) Why should countdown traffic lights be installed on the road?

Summary: Traffic lights with countdown can remind us to cross the road quickly.

(2) Experience the "countdown"

1. Where else have you seen or heard the countdown?

L rocket launch

L countdown to the new year

L microwave oven, washing machine

Game: making popcorn

(1) Suppose the explosion starts in 5 seconds, and we will count down.

(2) Suppose the explosion starts in 8 seconds, and we will count down.

(3) The teacher gives the numbers, the children count down, and the popcorn is ready.

Summary: Countdown is often used in life.

2. Countdown for kindergarten use:

Key questions:

(1) Did you find that Teacher Zhang usually uses countdown?

(2) Why does Teacher Zhang always count down?

(3) When do you think Zhang Can is still using countdown? Why?

Conclusion: Countdown is really useful, reminding us to speed up our work.

Activity expansion:

Children's Day is coming. Do you know how many days before Children's Day?

After today, how many days before Children's Day?