Solving problems of multiplication and division. Consolidation of the material passed. ABC of the city

Goals:Provide conditions for:
(a) fully anchor the multiplication and division table by 2.3.4.5.6.7.8;
(b) direct and inverse tasks;
(c) the solution of the tasks formulated.
Improve computational skills. To educate a conscious attitude to compliance with the rules of road traffic.

Class progress

1. 1. Organizational moment.
   2. Communication of the topic and tasks of the lesson.

Eloquent reading.
The city we live in with you,
You can rightly compare it to a bookkeeper.
ABC of streets, avenues, roads
The city gives us a lesson all the time.
Here it is, the alphabet overhead:
Signs are hung along the pavement.
Remember the ABC of the city,
Don't let anything happen to you.
We'll have a guest in this class.
(Traffic lights hanging)
His name is Traffic Light. He has prepared interesting tasks for you and at the same time wants to know whether literate pedestrians study in our class, whether everyone can read the alphabet of the city. Today we are going on a trip to our city. And what we eat, you will know if you solve the mystery of the traffic light.
Traffic light mystery:This word begins in the same way as the third month of summer and ends in the same way as the first month of autumn. Who figured it out? That's right, it's a bus.

1. 1. Oral billing.

We go in and take our seats. Who came first, boys or girls?
That's right, the boys gave way to the girls.
Let's solve the problem.Our bus has 35 seats. There are 9 girls and the same number of boys. How many seats are left? The problem is solved orally: 35-(9+9) = 17 places.
That's right, we can go now.
Song recording.
Here's the first stop. We see this sign on it. (Put a sign saying “No audio signal is allowed”).
Who knows what it's called?
That's right, "The sound signal is prohibited."
Then we will silently fill out the table.
On the board:
Multiplier 5 ...
Multiplier 8 7 3 8
Work ... 49 27 56
Answers: 40, 7, 9, 7.
How did you find the unknown multiplier?
Divisible 32 21 ... 72
Divisor 4 ... 8 9
Private ... 3 8 ...
Well done! Now we can move on.
And here's another sign. (On the board sign "Circle traffic")
Who will tell you what it's called?
That's right, "Circle Movement."
Where is that sign put?
And you need to solve circular examples:
81:9=9 4*6=24 36:6=6 24:8=3
12:3 = 4 9*4 = 36 6*4 = 12 3*3 = 9
Children in notebooks write examples in a chain. (Check from position)
Who did this job cleanly and neatly? Get a pink chip.

1. 1. Problem solving.

We can move on. There's a new sign.
(The “Main Road” is displayed on the board)
What's he telling us?
That's right, it's the main road sign.

Solve the problem (the problem on the sheets on the table):10 liters of gasoline in one canister. How many liters in 3 of these canisters? Solve the problem yourself: 10 * 3 = 30 (l). Answer: 30L in three canisters.
Now we will compile and solve 2 inverse problems.
Which tasks are called inverse tasks?
1.In 3 identical canisters 30 liters of gasoline. How many liters of gasoline in one canister? 30:30=10(l)
2. There's 10 liters of gasoline in one canister. How long will it take to pour 30 liters of gasoline? 30:10=3(l)

Let's solve the problem:Three liters of gasoline costs 18 rubles. How much money should I pay for 7 liters of gasoline?
What does the task say?
What do we know?
What do I need to know?
What words will we write down in a short note?
Price Quantity Cost

? 3l 18 rubles.
(18:3)*7=42 (Rub.)
Well done! You can drive on the main road. Now we can rest. (For the correct operation of the red token).

1. 1. Physical minute.

A poem
Walking carefully,
Watch the street--
And only where you can,
Cross her.
(Movements: Walking in place, looking left, right, walking again).

1. 1. Working in groups.

Now, traffic light and I want to know if you can work in groups, and there are envelopes with specific tasks on each row. On my command, you open them and make a mosaic. If you solve all the examples correctly, you should get a picture. Attention, here we go.
(The children are working together on a mathematical mosaic.) You should get pictures with road signs.
What do these signs tell you? (The student of each group tells what the sign is called and what it means.)
Well done, guys, you have proven that you can work in groups.
The best band gets a badge.

1. 1. Independent work.

Task cards - Examples No. 1 page. 41 (check from position).

1. Lesson result.

Raise your hand who did the job correctly and accurately. You get a badge.
Who has 3 tokens or more? You get 5 per class work. You and I are saying goodbye. Thanks for your work. The doors of our bus opened. Which door are you going through?
Don't forget the alphabet of the city. Follow the rules of the road
Choir.
alphabet
Always remember,
Whatever happened.
You're in trouble.

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