1 The activity goal of "Fill in the blanks in mathematics" in the big class
1. Understand the concepts of total number and partial number and their relationship through children's hands-on operation.
2. On the basis of learning addition and subtraction within 10, children can add and subtract the fill-in-the-blank questions in the formula within 10 through writing practice.
3. Develop children's logical thinking ability.
4. Understand the application of numbers in daily life, and preliminarily understand the relationship between numbers and people's lives.
Activities to be prepared
1. Picture -4 big balls and 2 small balls; 7 apples and 3 pears.
2. Small animal cards (two varieties, with different quantities, with the total not exceeding10); One box of plasticine per person.
Activity process
Please look at the formula in Figure 6.
1. Show pictures: 4 big balls and 2 small balls.
Let the children talk about what is in the picture, how many are there, and what are the similarities and differences.
2. Guide the children to say the total, and then let them classify the fruits.
And said: "Some are big balls, there are four; Some are small balls, and there are two. "
3. Let children understand the concept of whole and part, and list the addition and subtraction formulas:
For example, 4+2=6 2+4=6 6-4=2 6-2=4.
Second, look at the formula of column 10.
1. Let the children talk about what is in the picture, how many, and what are the similarities and differences.
2. The children say the total, and then let the children classify the fruits and say:
"There are some apples, there are seven; Some are pears and there are three. "
3. Let the children understand the concepts of whole and part, and list addition and subtraction formulas.
For example, 7+3 =103+7 =1010-7 = 310-3 = 7.
Third, guide children to do corresponding oral exercises.
( 1) 7 + 3 = 10
There are 7 apples (partial number) and 3 pears (partial number), and the total is 10 (total number).
Similarly: 3+7= 10 4+2= 2+4=6.
Guide the children to say which part number is. What's the total? How many parts are there? How many are there altogether?
(2) 10 -? = 7
Fruit 10, 3 apples and 7 pears.
10 is the total, 3 parts and 7 parts.
Similarly: 10-7=3 6-4=2 6-2=4.
Guide the children to say which is the total. What is a partial number? How many parts are there? How many are there altogether?
Fourth, guide children to say key sentences.
1. In the addition formula, the sum is at the end, and the others are partial numbers;
In the subtraction formula, the total comes first, and the others are partial numbers.
It is concluded that the total sum of addition is at the end and the total sum of subtraction is at the front.
2. The sum of parts and parts is the total. If the number of parts is subtracted from the total, the rest is still the number of parts.
It is concluded that the total demand is the sum of some figures; Find a partial number and subtract another from the total.
Five, children play cards.
Children take out cards, pour out small animal cards, talk about what they have, how many in total, classify them and make records.
Tell your partner the results of your own classification records.
Six, the children play with plasticine
The rule is that everyone can write two kinds of articles, no matter how many.
10 minutes later, let the children say how many things they have pinched, what is one part and how much, what is the other part and how much.
Take notes and tell me which is the total and which is the partial number.
Seven, children know brackets ()
Written exercises;
3+( )=4 5+( )=7 ( )+2=5 ( )+6= 10
7-( )=3 ( )-2=8 5-( )= 1 ( ) -3=6
Eight, the teacher summed up the results of checking the children's exercises.
"Fill in the blanks in mathematics" lesson plan 2 Activity purpose
1, understand the concepts of total number and partial number and their relationship with you through children's hands-on operation.
2. On the basis of learning addition and subtraction within 10, children can add and subtract the fill-in-the-blank questions in the formula within 10 through writing practice.
Activities to be prepared
Teaching aid: a basket full of balls (4 big balls and 2 small balls); A fruit basket (7 apples and 3 pears)
Learning tools: each person has a "small animal card" package (two varieties, different quantities, the total does not exceed10); One box of plasticine per person; Everyone has a pencil and a math exercise book.
Activity process
First of all, the teacher shows the small basket with the ball and asks the children to talk about what is in the basket, how many are there, and what are the similarities and differences. Guide the children to say the total number, and then let the children classify the fruits and say, "There are some big balls, and there are four; Some are small balls, and there are two. "Let children understand the concept of the whole and the part, and list the addition and subtraction formulas: for example, 4+2 = 62+4 = 66-4 = 26-2 = 4.
Second, the teacher shows a small basket full of fruits. Let the children talk about what is in the basket, how many are there, and what are the similarities and differences. The child said the total number, and then asked the child to classify the fruits and said, "Some are apples, and there are seven; Some are pears, and there are three. "Further let children understand the concepts of the whole and the part, and list the addition and subtraction formulas. For example, 7+3 =103+7 =1010-7 = 310-3 = 7.
Third, guide children to do "corresponding oral exercises" such as:
①7+3= 10
Apple is seven pears, but there are three, and the total is 10.
This is the partial number and the partial number, and this is the total.
Similarly: 3+7 = 104+2 = 2+4 = 6 to guide the children to tell which part number is it? What's the total? How many parts are there? How many are there altogether?
② 10-3=7
The fruit has 10 apples, 3 pears and 7 pears.
This is the total, this is a partial number, and it is also a partial number.
Similarly: 10-7 = 364 = 26-2 = 4 Guide the children to tell which is the total? What is a partial number? How many parts are there? How many are there altogether?
Fourth, guide children to say key sentences. For example:
(1) In the addition formula, the total number is at the end, and the rest are partial numbers; In the subtraction formula, the total comes first, and the others are partial numbers.
It is concluded that the total sum of addition is at the end and the total sum of subtraction is at the front.
(2) The sum of part number and part number is the total. If you remove (subtract) the partial number from the total, the rest is still the partial number.
It is concluded that the total demand is the sum of some figures; Find a partial number and subtract another from the total.
Five, children play cards. Children take out cards, pour out small animal cards, talk about what they have, how many in total, classify them and make records. Tell your partner the results of your own classification records.
Sixth, children play with plasticine. The rule is that everyone can write two kinds of articles, no matter how many. 10 minutes later, let the children say how many things they have pinched, what is one part and how much, what is the other part and how much. Take notes and tell me which is the total and which is the partial number.
Seven, children know the bracket "X"; Written exercises; Teachers' itinerant guidance.
3+x=45+x=7x+2=5x+6= 10
7-x=3x-2=85-x= 1x-3=6
Eight, the teacher summed up the results of checking the children's exercises.
Activity reflection
I tried this activity class three times, constantly reflecting on what mistakes I made in my activities with children, and gradually improving.
The first time I tried teaching, the effect of the activity was not very good. I found that children have a good understanding of "total" and a little difficulty in "partial number". Children can never associate "partial objects" with "partial numbers".
In the second trial teaching, I changed the way of guidance, so that when children collectively operate activities, individual guidance inspires children to tell where and how much the total number in their records is. Where is the partial number and what is it? In this activity, it was found that some children lost their physical objects and could not find the "total number" and "partial number". So I made some fine-tuning on the basis of last time, so that children can combine intuitive learning tools with abstract theories. In this way, the activity effect is very good.
The third trial teaching achieved remarkable results.
Summing up these three mathematical education activities, the enlightenment is:
① Constantly searching for new breakthrough points in teaching activities.
(2) Looking for the laws in mathematics, replacing the surface with points, knowing everything.
(3) Like other activities, we should focus on games and turn the abstract into concrete.
"Fill in the blanks in mathematics" big class teaching plan 3 activity goal:
1, master the division of 8.
2. Cultivate children's ability to recognize numbers.
3. Cultivate children's comparative judgment ability.
4. Guide children to actively interact with materials and experience the fun of mathematics activities.
5. Stimulate children's interest in learning.
Activity preparation: different colors of chess pieces on the digital card board rotate hexahedral flag playing cards.
Activity play: 5 children in each group, a chessboard and a set of 1-7 playing cards for each child. Each child holds a chess piece of different colors, puts his own chess piece at the starting point, throws the rotating hexahedron in turn according to his own symbolic order, and then takes a few steps forward. If you get a box without a pattern, let the next child throw a rotating hexahedron; If you walk to a patterned grid, say out the number of patterns loudly and ask other children which number adds up to 8. Then, take out the corresponding digital card from your own digital card with your partner and take the right child forward. The wrong child stays where he is. Whoever walks to the finish line first will insert a colorful flag with the same color as his chess pieces at the bottom of the castle. The game is repeated, and whoever takes the colorful flag to the top of the castle first wins.
Activity rules:
1, the game should take turns to throw the rotating hexahedron in order.
You must get the correct figures as required before you can move on.
Activity flow:
1, invite children to the chess hall to play chess, and arouse their interest.
2. Explain the name, play and rules of the game.
3, children play games, teachers tour guidance.
4. The game is over and the teacher concludes.
Activity reflection:
Mathematics can create the best scene for children to start work, talk, think and all kinds of senses to participate in learning activities, stimulate children's interest in learning, arouse students' enthusiasm, maximize students' physical and mental potential, save time, complete learning tasks efficiently, infiltrate ideological and moral education, cultivate good learning habits and psychological quality, and make intellectual quality and non-intellectual quality develop harmoniously. Guide students to "play" middle school, practice in "fun", increase their talents in "fun" and increase their courage in "competition". Improve learning efficiency and cultivate students' good study habits and organizational discipline.
The fourth teaching plan of "Fill in the blanks in mathematics" is designed for large class children, and has a preliminary understanding, experience and understanding of the concept of number in mathematics. In order to let children understand every number in the addition and subtraction formula, to let children enter primary school smoothly, to lay a good foundation for children to learn mathematics in the future, to cultivate children's thinking ability and to stimulate children to explore the mysteries of mathematics.
Activity purpose 1. Understand the concepts of total number and partial number and their relationship through children's hands-on operation.
2. On the basis of learning addition and subtraction within 10, children can add and subtract the fill-in-the-blank questions in the formula within 10 through writing practice.
Activity preparation teaching aid: a basket full of balls (4 big balls and 2 small balls); A fruit basket (7 apples and 3 pears)
Learning tools: each person has a "small animal card" package (two varieties, different quantities, the total does not exceed10); One box of plasticine per person; Everyone has a pencil and a math exercise book.
Activity flow 1. The teacher shows the small basket with the ball and asks the children to talk about what is in the basket, how many are there, and what are the similarities and differences. Guide the children to say the total number, and then let the children classify the fruits and say, "There are some big balls, and there are four; Some are small balls, and there are two. "Let children understand the concept of the whole and the part, and list the addition and subtraction formulas: for example, 4+2 = 62+4 = 66-4 = 26-2 = 4. Second, the teacher shows a small basket full of fruits. Let the children talk about what is in the basket, how many are there, and what are the similarities and differences. The child said the total number, and then asked the child to classify the fruits and said, "There are some apples, and there are seven; "Some are pears, and there are three." Let children further understand the concepts of whole and part, and list addition and subtraction formulas. Such as: 7+3 =103+7 =1010-7 = 310-3 = 7 Third, guide children to do "corresponding oral exercises" such as:
① 7 + 3 = 10
Apple is seven pears, but there are three, and the total is 10.
This is a partial number and also a partial number. This is the total. Similarly: 3+7 = 10 4+2 = 2+4 = 6 to guide children to distinguish which is the partial number? What's the total? How many parts are there? How many are there altogether? ② 10-3 = 7 apples 10, 3 pears and 7 fruits. This is the total. This is also part of the figure. Similarly: 10-7 = 364 = 26-2 = 4 to guide children to say which is the total. What is a partial number? How many parts are there? How many are there altogether? Fourth, guide children to say key sentences. For example: ① in the addition formula, the sum is at the end, and everything else is partial; In the subtraction formula, the total comes first, and the others are partial numbers.
It is concluded that the total sum of addition is at the end and the total sum of subtraction is at the front. (2) The sum of part number and part number is the total. If you remove (subtract) the partial number from the total, the rest is still the partial number. It is concluded that the total demand is the sum of some figures; Find a partial number and subtract another from the total. Five, children play cards. Children take out cards, pour out small animal cards, talk about what they have, how many in total, classify them and make records. Tell your partner the results of your own classification records. Sixth, children play with plasticine. The rule is that everyone can write two kinds of articles, no matter how many. 10 minutes later, let the children say how many things they have pinched, what is one part and how much, what is the other part and how much. Take notes and tell me which is the total and which is the partial number. Seven, children know the brackets "()"; Written exercises; Teachers' itinerant guidance. 3+() = 4 5+() = 7 ()+2 = 5 ()+6 = 65,438+00 7-() = 3 ()-2 = 8 5-() = 65,438+0 ()-3 = 6 VIII. Teachers sum up the exercise results of checking children.