primary-schooler
MKOU "Secondary Kamensky SOSH"
Altai Territory, Loktev district
c. Second Kamenka
A general lesson on the topic: “Consolidation of computational skills in adding and subtracting two-digit numbers”
Lesson is a journeyBased on fragments from the modern cartoon "Masha and the Bear"
Subject:Adding and subtracting single and double digit numbers.
Class type:generalizing lesson.
Lesson form:journey.
Goals:
- To fix the computational skills of addition and subtraction within 20 and 100; repeat the ability to solve problems;
- Develop the ability to quickly and correctly solve expressions for addition and subtraction within 20; improve logical thinking, imagination, thinking;
- To cultivate interest in mathematics and love of cartoons.
Equipment:
- Mathematics textbook 2nd class, author I.I. Arginskaya
- Presentation for the lesson “Masha and the Bear”
- handouts: tests, coloring
- projector
Class progress:
I. Org. moment.
(a) Psychological attitude.
- Good afternoon, guys and distinguished guests! It's math class.
The math lesson tells us,
What we know and what we need to know.
In order to solve tasks correctly,
We need to think and reason.
This requires attention and effort!
Let's smile at each other. May the lesson bring us all the joy of communication. Today in class, guys, you are waiting for many interesting tasks, new discoveries, and your assistants will be: attention, resourcefulness, ingenuity.
- I wish you today to be attentive and diligent, to be active in the lesson, so that we have a good lesson.
- Let’s welcome each other with a smile, please turn around and smile at each other.
II. Verbal billing.
- Now I suggest you do some oral tasks:
(a) Name the number in which- 2des.3d., 4des. 7d., 5des.6d., 8des.2d., 9des.1d., 6des.9d.
b). Do your homework.:
What is the sum of the numbers 8 and 4?
Number 9, number 4, what is the sum?
Decreased 12, subtracted 5, what is the difference?
- 14 reduce by 1;
- 9 increase by 3?
What number follows the number 49? the number 70?
What number precedes the number 80? the number 50?
- Now I'm going to give you a few things to do from the presentation.
c). Presentations:
- "Help the rabbit."
- "Determine the route of the plane."
- "Mathematical mosaic"
III. One minute of writing:
- Guys, now, let's open the notebooks and write in them impressions and numbers.
- Observe the correct landing.
IV. Lesson topic message.
- Guys, today I want to take a trip with you in math class.
- Tell me, do you like watching cartoons?
- Name your favorite...
- Well, now I suggest you remember the modern cartoon "Masha and the Bear". You must all like him, right? Today, in class, we will travel through some fragments of this cartoon.
- All right, let's go!(music presentation)We need to move a little bit with you, please get up from behind the desks, and try to repeat to the music a few of these movements behind me.Physical minute.
— All right, guys, let's move on. Look at the next slide, who do you see on it? (MASHU, where she is wearing a hat, after stealing a snowmobile from a bear, and the bear is unconscious with a bump on his head...)
- And who can quickly and briefly remind us of this fragment, what happened to Masha?
- You remembered everything correctly, but, guys, Masha has a problem that we will solve, because we have a math lesson, so imagine that Mishka, to forgive Masha for her fault, gave a task to Masha, what task we will read on the next slide.
V. Textbook work.
- So, guys, let's open the textbooks and find this assignment. (Performing collectively)
- Aloud will read...(Respond to task questions and perform drawings)
11 - 3 = 8 (d)
- Do you guys like to play ball? Where do you play with him? Are you a lot on the set? Are you friendly? Don't fight? It is right, you need to play together, cherish friendship.
- Well done, let's move on.
- Please look at the next slide. Who can briefly explain the excerpt from the cartoon?
- Yes, this piece is about when Masha and the bear were fishing. Don't you want to fish?
- Well, then we'll fish like this:The first option will try to catch perch, and the second karasha. I'm going to give you this fish, and on the back of it will be written the task that you have to do, which will be expressions in which you need to find their meanings.
- Once you have completed them, you will exchange them with each other and check.Compare the answers on the slide.
- Who did this task without mistakes? All right, well done!
- You can keep the fish for yourself, especially since you caught it yourself!
And we go on, what do we see on the slide? (How Mary began to treat wolves.)
- Who can tell?
- Good! You and I will be treated and we will be treated.The gym minute!
Eye physique
- Guys, look at this slide, we're going to make a physical minute for the eyes to rest.
- Okay, let's move on. What fragment do we see on the slide? (Masha and the apples while she was playing school with her bear friend.)
- Okay, what's she offering us?(decide)
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VI. Work by the board.
- We're going to compete! We split into two teams, the team captains will work at the board, for them I have prepared a task on the board.(Expressions solved with errors, you need to find errors and correct them). And we will work with you verbally, and then check the work of our captains.
Task on the board:
1 captain 2dm = 20cm 3dm 3cm =30cm 1dm 5cm =10cm |
2 Captain: 40cm = 4dm 2dm 8cm =82cm 4dm 9cm =40cm |
The task for working with the class:
- 7 light bulbs were on. 3 of them were extinguished. How many light bulbs are left?(7)
- Three people waited 3 hours for the train. How long did everyone wait?(3)
- You can see 8 cat legs from under the gate. How many cats are in the yard?(2)
- The log was cut into 3 pieces. How many saws did you make?(2)
Slide task!
- What shapes and how many do you count? (9)
- So, good guys, you did a good job, and our captains are ready too, let's see how they completed the task, did they correct the mistakes?
Physcultminute.
- Let's get some more rest, let's dance?
- Look at the slide! Who do we see? What fragment is that? (As Masha plays with her friend Mishka to school.) What does it say?
- Who will tell me what kind of holiday is coming?(Mother's Day)
- Yes, for several years in a row in Russia on the last Sunday of November is celebrated Mother’s Day, this year it will be on November 27.
- How do you congratulate your mother on this day? How do you help them? What do you make them happy?
- Guys, try never to upset your mothers, because there is no one in the world closer to a person than your mother, take care of them and pity them!
- And our heroine from the cartoon offers you not only to solve tasks, but also to make a surprise for your mothers for their holiday. I will now give you these coloring books, in which you must find the meaning of expressions and paint the picture with the specified color, this will be a task for you at home, and on November 27, on the feast of mothers, you will give these coloring books to mothers.
VII. Lesson result.
- Well done, children, you worked very well today, I am very pleased with you. Tell me, what were you doing in class today?
- I also want to thank you for helping each other and the heroine of the cartoon “Masha and the Bear”. We can't do it without friendship.
Presentation (14 slides) in .ppt format and lesson summary in 2 Mb .doc format
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