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Summary of math 1 class Size. The decision of the task 2018
2016-07-06, 15:57:59

Theme: Value. The decision task.
Objective: - to learn the ideas of quantities – length, mass, volume, units of measurement of these quantities; the development of these concepts in order to apply them in life situations.
Objectives: Educational:
- to acquaint with the rules of the comparison, addition and subtraction of values; to continue to strengthen knowledge about the General principle of measurement values.
- to create conditions for the formation of mental operations: analysis and comparison, logical thinking and the development of mathematical speech, to enrich and to complicate the vocabulary.

- to create conditions for the formation of skills to work together in a team to raise the cognitive interest in the subject, communicative culture, learning and interaction.
Equipment: Textbook, notebook, presentation.

Tools: ruler.
The lesson
I. Organizational moment.

- Hello, guys!
Math, friends,
Not love, no way!
A very strict science –
Do the MATH.
II. An oral account.
1. Mathematical dictation (children write in their notebooks the answers in a string separated by commas) .
-Guys, open your notebook, count down 4 cells, 10 cells to the left, write down today's date: March 14.
- On the next line you will record only the answers to my questions.
- 1+2 (3)
- 8-5 (3)
- 5 to increase by 1 (6)
- 3 reduce to 1 (2) find the sum of the numbers 4 and 3 (7)
- find the difference between the numbers 9 and 2 (11)
- 3 bullfinch and 6 Tits,
Guys, how many birds? (9)
- Well, how many guys
On the mountain riding?
Three in the sleigh sit
Two wait. (5)
Two leverets shustrenko
So cold, already shivering.
Do the math and tell me
How many boots to buy them? (8)
- We received the following series of numbers: 3 6 2 7 4 1 9 5 8.
- Arrange the numbers in ascending order (girls, and descending order (boys) .
2.- With a theme you worked on the previous lessons? (value).
- What is the value? (this is a feature of an object that you can measure and record using numbers) .
- What values do you know? (length, mass, volume) .
3. Puzzles.
"I'll ask riddles about some values, try to guess what about?
The planets she's a big,
The minimum of the particles.
Her eyes did not measure
After all, she has a lot of entities.
There are often vertical,
Can any inclination to take
Can I sleep horizontally
Can size determine.
Can ring, spiral curl
Can I snake crawl
You can once again to return back,
Great way to go.
- Which of these words are names of values?
(Weight, color, taste, smell, length, volume) .
4. Task.
Given a segment of length 7 cm, it was divided into two parts. The first part is 4 cm, what is the second part?
- Pick up the ruler and pencil, draw a line segment. (Repeat the rules for constructing segments).
The range applied to the border cells start to delay the interval from 0, ends cut at the point 7.
- On this segment set aside a portion equal to 4 cm. This means that the 0 division on the ruler is compatible with the beginning of the segment and mark a point 4 cm.
- What is the remainder?
- How to find? (the remainder found by subtraction). How to find the balance? Unknown: part? Or as a whole?
- Write the solution: 7 – 4=3 (cm)
Answer: 3 cm
III. The primary material.
1) - Open the textbook on page 8 and find exercise 1.
- On what basis are collected in each line of the image objects?
(in color) .
- Is the color value?
(no) .
(Because value is something that can be measured and the result recorded. Color cannot be measured, so color is not a magnitude) .
- And what shall be the sign of these items will be the value?
(volume, mass) .
2) – Find the job number 2 and read it.
- What General name can we give to these objects?
(this flowers) .
- Give the name of the flowers?
(Daisy, Tulip, forget-me-not) .
- What are the signs of these flowers.
Some of them can be called a value?
(length, weight) .
- Can we measure the mass using a page of the textbook? (no) .
- What values we can work even if the flower is drawn? (length) .
– Now we need to measure the length of each flower and record the result in the blank cells.
(Chamomile – 4 cm, Tulip – 3cm, forget-me-not – 2 cm).
I. Disminuci.
Hands up raised,
And then let them go.
And then they will deploy
To itself rather.
And then hurry, hurry
Clap, clap, fun.
5. 5 read the task it must perform in the tutorial.
- What are the numbers you need to set "Windows" to get a correct equality?
- Read the first equality?
(4 kg + 1 kg = 7 kg - kg).
- How many kilos is obtained in the left part? (5) .
- To the right side is 5 kg, how much we should subtract from 7 kg? (2 kg) .
- Record the number in the blank "window".
- Check the second equality?
(8 l – 4 l = l + 2l) .
- How many liters of obtained in the left part? (4 l) .
- To the right side turned out 4 years, how much must we add to 2 l? (2 l) .
- Record the number in the blank "window".
- Read the third equality?
(cm + 6 cm = 9 cm + 0 cm) .
- How many turns out the right side? (9 cm) .
- To the left of 9 cm how many we need to add to 6 cm? (3 cm) .
- Record the number in the blank "window".
6. Find the job under the number 6.
- What is depicted? (Libra) .
- In what condition are the scales? (in equilibrium) .
It means the weight on the left side of the scale equals the weight on the right pan.
- What is on the left bowl? (the weight of mass 1 kg and a package of unknown weight) .
- Lying on right side? (weight of 2 kg and 4 kg) .
- First we have to figure out how much weight rests on each bowl, how many kilos on the first bowl? (don't know because not known to the mass of the package) .
- How many kilos on the second Cup? (6 kg) .
- How did you know? (2 plus 4) .
- Using these data, we can compile the following expression?
(1 kg + kg = 2 kg + 4 kg). From this it follows (1 kg + kg = 6 kg) .
- What number can we substitute in our expression to the left part was 6 kg? (5 kg) .
- What is the weight of the package? (5 kg) .
- Write in a notebook solution: 1 kg + 5 kg = 6 kg
Answer: the package weighs 5 kg.
. Summing up.
- Than we took in class today?
- What is the value?
- What values do you know? In what units are they measured?

Category: Arithmetic | Added by: Admin | Tags: The, Math, of, Task, Decision, summary, Size., class
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