To teach first grade mathematics, you need to solve the process

First of all, it rained in the morning and afternoon for 7 days. And it rains in the afternoon, there must be no rain in the morning, it rains in the morning, and there is no rain in the afternoon.

Secondly, there were 5 days without rain in the afternoon. Suppose that it rains in the morning on 5 out of 7 days, and there is no rain in the afternoon on those 5 days. Then there are still 2 days of rain in the afternoon, and it will rain in the morning and afternoon, a total of seven days!

There were 6 days without rain in the morning. Take 2 of these days as afternoon rain. Then there are only 4 days left before it rains in the morning and afternoon!

So the total number of days is; 7+4=11

It didn't rain for 4 days.

Hope! Happy New Year!

It rained in the afternoon for several days, but it did not rain in the morning.

The number of rainy days in the afternoon is 6-5=1 more than the number of rainy days in the morning.

Since there were a total of 7 rains in the morning and afternoon, the number of rainy days in the morning was: (7-1) 2=3, and the number of rainy days in the afternoon was 3+1=4

Since the number of days that rain in the morning or no rain in a day is 5, there are 5-3 = 2 days without rain in the whole day.

Because there was no rain in the morning for the days when it rained in the afternoon, there were a total of days of rain in the afternoon + days of rain in the morning + number of days without rain in one day = 4 + 3 + 2 = 9 days.

If it rains in the afternoon, it doesn't rain in the morning, so it rains at least 6 afternoons, 7 times in total, then it rains once in the morning, and on the day it rains in the morning, it definitely doesn't rain in the afternoon. There were 5 days without rain in the afternoon, so there were at least 6+5=11 days during this period, and there was no day of rain all day.

Yiyi has 7 more stamps than Apple. 3 + 4 = 7 (sheets).

A: Yiyi has 7 more stamps than Apple.

Analysis] From the stem information, it can be seen that "Apple is 3 less than Taotao", then Pingping's stamps + 3 = the number of stamps on Taotao, according to "Yiyi is 4 more stamps than Taotao", then Yiyi's stamps - 4 = the number of stamps on Taotao. Therefore, 3+4=7 (sheets), so you can answer the question.

About.

It is indeed very difficult for children of six or seven years old to understand such a problem! Even adults need to think calmly! The main thing is that there is no "base number" (there is no specific number of stamps on Taotao).

It is recommended to use line segments to represent the quantity. In order to make it easier to understand, you can change the topic slightly and replace it with the height of three people, so that the children can intuitively sort out that A is less than the "same quantity" (intermediate quantity) and B is more than the same amount (intermediate quantity), so who is more and who is less between A and B, and how much is the difference? Guide your child to understand step by step.

Grade 1 math compulsory exam questions, students feel that it is too difficult, memorize methods and skills to kill the problem.

For example, mom has three fewer candies than her child, and dad has four more candies than her child.

You can use children's favorite toys such as building blocks, robots, etc. instead of stamps, mainly find some things that children are interested in instead of targets, so that children can imagine the number of items in the relationship between the picture, so as to change the way of thinking about similar problems.

Let the child read that Apple has 3 fewer stamps than Taotao, and ask the child how many more stamps Taotao has than Apple Apple? If the child can answer 3 more stamps, then let the child read 4 more stamps than Taotao, and then ask the child how many more stamps Yiyi has than Pingping. If you haven't understood yet, cut 7 pieces of paper, first 3 and then 4.

Assume the number of apples a child has on the blackboard, draw circles or apples, and see at a glance.

First, explain the concepts of "more" and "less" to your child.

It is best to use physical examples, such as having three pens in your own hand, six pens in your child's hand and ten pens in the hands of another parent, to explain the problem, of course, it does not have to be a pen, there are other things around you.

After explaining the question to your child, you can ask him to dictate it in an easy-to-understand language.

Then the pen is replaced with the term stamp, and the analogy is promoted.

Apple has 3 fewer stamps than Taotao, so Taotao has 3 more stamps than Apple Ping.

And Yiyi pays 4 more than Taotao.

Then, Yiyi has 3+4=7 more than Apple.

Simulate it with money or pens and let them think for themselves.

In the first class of elementary school mathematics, I will introduce it first, and I will give a lecture. There is no need to talk about the content. In the first lesson, don't talk about the rules first, but talk to students about the fun of mathematics, and start with some mathematical stories so that students can experience the beauty of mathematics.

Eliminate students' fear and embarrassment of mathematics, students will naturally have the confidence and courage to learn mathematics well, if you can stimulate students' interest in mathematics, students will be very willing to learn, so that your mathematics teaching will be successful.

Mathematics originated in the early production activities of human beings, and the ancient Babylonians had accumulated a certain amount of mathematical knowledge since ancient times and could apply practical problems. From the perspective of mathematics itself, their mathematical knowledge is only obtained through observation and experience, and there is no comprehensive conclusion and proof, but it is also necessary to fully affirm their contributions to mathematics.

The knowledge and application of basic mathematics is an integral part of individual and group life. The refinement of its basic concepts can be seen in ancient mathematical texts in ancient Egypt, Mesopotamia, and ancient India. Since then, there has been a steady stream of development.

But algebra and geometry at that time remained independent for a long time.

Algebra is arguably the most widely accepted form of "mathematics". It can be said that since everyone started learning to count when they were young, the first mathematics they came into contact with was algebra. As a discipline that studies "numbers", algebra is also one of the most important components of mathematics.

Geometry was the first branch of mathematics to be studied.

For example, if the white ball is n, then the number of red balls is n-10, then the number of yellow balls is n+30, and 30+10 is the number of red balls less than the yellow ball, that is, 40 less.

Analysis: 10 fewer reds than white, 30 more yellows than white. The difference between less and more is 40.

Q: How many less reds are there than yellow?

10 + 30 = 40.

A: There are 40 fewer red balls than yellow balls.

If the white ball is x, then the red ball is x-10 and the yellow ball is x+30 The red ball is less than the yellow ball.

x+30)-(x-10)

x+30-x+10=40

There are 40 fewer red balls than yellow balls.

This is a revised version of the nine-square grid, don't worry about what the theoretical basis, remember the formula: the righteousness of the nine palaces, the law is based on the spirit turtle, two four for the shoulder, six or eight for the foot, three on the left and seven on the right, wearing nine shoes and one, five lives **.

Theoretically, the nine numbers from 1 to 9 add up to 45, if there are 3 numbers in each row, then each row or column should be 15 after adding up, 1 to 9 these nine numbers, in addition to 5, the rest will have four groups of numbers (1 and 9, 2 and 8, 3 and 7, 4 and 6) added to 10, so these four groups of numbers should be paired, 5 is placed in the nine-square grid**, and the four groups of numbers are placed in the horizontal, vertical, and diagonal positions. It is very easy to fill in the test form. In this problem, there is no middle one, only the surrounding eight squares, just remove the middle 5.

I don't know if I made it clear.

From the graph, the first one has one more star than the second, which means 2 more, so the star = 2

The star is 2, and the triangle is 6 by the third picture star, then the triangle = 6-2 = 4

From the second figure, circle + triangle = 7, circle = 7-4 = 3

Because Eq. (2) is equal to 7

So equation (1) can be brought in 7 to find that the pentagram is equal to 2

In bringing the pentagram into equation (3), it is concluded that the triangle is equal to 4

Finally, the triangle is brought into equation (2) to arrive at the circle equal to 3

You can tell him that the same figure represents the same number, the first one has more five-pointed stars than the second, what number does the five-pointed star represent, then find the triangle, and finally find the circle.

Let's put these equations first

Subtract =2

Use minus =3

Substituting and substituting into to get =4

Suppose all three are circles or stars or triangles. Then each circle or star or triangle is equal to 3

If two 7 cm strips of paper are connected together, the length is 7 + 7 = 14 cm.

But there are 6 centimeters in the middle that are glued together, so the length of this 6 centimeters is repeated in 14 centimeters, which should be subtracted, therefore.

The answer is 14-6=8 centimeters.

It can be concluded that two pens are eight yuan, and that one pen is 4 yuan, and then from the second column, it can be concluded that a stationery box is equal to 10-4=6 yuan.

18-10 = 8 (** for two pens).

4 + 4 = 8 (that is, the ** of a pen is 4 yuan).

10-4=6 (stationery box 6 yuan).

Four dollars for pens, six dollars for stationery boxes, hope.

The circle is 6, the box is 13, and the triangle is 10

The second question is three triangles and one box, so it should be 10+10+13=33 The third question is two circles and one triangle, so 6+6+10=22, and the fourth question is three circles, so it should be 6+6+6=18

The last one in the top row (the wrong one):

The second line reads, in order: