Eight plus 1 teaching plan for large class mathematics;
1, understand the meaning of 8 addition through teaching aid demonstration, teachers' and children's activities and oral addition exercises.
2. Cultivate the accuracy, flexibility and agility of children's calculations.
3. Understand the interchangeability and mutual irregularity of the addition of 8.
4. Cultivate children's ability to observe, judge and operate.
5. Cultivate children's spirit of trying and develop children's agility and logic of thinking.
Emphasis and difficulty in teaching:
1, key point: let children strengthen the accuracy of addition in exercise 8.
2. Difficulties: Exercise children's thinking flexibility and discrimination.
Activity preparation:
1, wall chart, snowflake, homework paper, map.
2, 8 digital headdress, music game tape.
Activity flow:
First, the beginning part:
Organizing teaching, the teacher walked into the classroom wearing a digital headdress of 8. Hello, children, the teacher brought it today.
Learn digital doll 8 with us, concentrate children's attention and observation, and stimulate their interest in learning.
Second, the basic part:
(1) Review the division of 8 in the form of duet, first according to the complementary relationship, and then according to the exchange relationship.
Teacher: Let me ask you something, little friend. What number can 8 be divided by 1 and?
Child: Teacher Liu told you that 8 can be divided into 1 and 7. ...
Teacher: Let me ask you something, son. 8 How many kinds of division are there?
Child: Teacher Liu told you that 8 has seven divisors.
(B) learning the addition of 8
1, the teacher shows a wall chart for children to observe, and guides children to list addition formulas according to the size, color and shape of flowers:
There are 1 yellow flower and 7 red flowers on the picture. How many flowers are there in a * * *?
1+7=8
There are two big flowers in Kobanawa in the picture. How many flowers are there in a * * *?
2+6=8
There are three round flowers, five oval flowers and one * * *. How many flowers are there?
3+5=8
There are four orchids and four purple flowers in the picture. How many flowers are there in a * * *?
4+4=8
2. Gymnastics
Give each child 8 snowflakes, let the children count the snowflakes, and fill in the corresponding numbers on the homework paper.
3. Teachers tour to guide children's operation, reward good children's maps, and strengthen guidance for poor children.
4. Game: Find friends
The teacher gave each child a digital headdress. When children think of music, they look for numbers that add up to 8 and become good friends. This game can be played by exchanging headdresses.
5. Guide children to observe things around and in the classroom. Together, it is the number 8. After returning home, they can also practice arithmetic, such as sugar, apples, biscuits, toys and so on.
Third, the last part:
The teacher comments on the class situation, praises the good children, guides and encourages the poor children to finish class.
Activity reflection:
In the future math teaching activities, I will use games more, because children are most interested in games and can attract them most. The form of games can make children more interested in math activities, stimulate their enthusiasm and initiative in learning, and form a good habit of loving brains and hands-on.
The Teaching Content of "Eight Plus" Teaching Plan II in Large Class Mathematics
Page 35-36 1, 2, 1 in the first grade textbook published by West Normal University.
Textbook analysis
Compared with the addition and subtraction of 6 and 7, the addition and subtraction of 8 and 9 are quite different in arrangement: first, it is a transition from writing two addition formulas or two subtraction formulas according to a picture to writing four formulas according to a picture. The textbook provides stick figures. Under the guidance of the teacher, let the students write different formulas. This arrangement allows students to discover the relationship between numbers 2, 6 and 8, not only to write four formulas, but more importantly, to experience the exploration process of writing four formulas according to a picture, so that students can feel the connection between "one picture and four styles" and real life. The addition and subtraction of 9 is based on the addition and subtraction of 8, so that students can further strengthen the method of arranging four formulas and improve their computing ability.
Analysis of learning situation
The students have learned 8 and 9. When students learn the addition and subtraction of 6 and 7, they will list two addition formulas or two subtraction formulas according to a picture, which will lay the foundation for the study of four formulas in this lesson.
Teaching objectives
1, knowledge and skills: master the calculation method of addition of 8 and 9 and subtraction of 8 and 9, and be able to do the corresponding oral calculation correctly.
2. Process and method: Let students feel the objective fact that the numbers are the same by changing the positions of the two addends in the process of writing four formulas and calculating numbers according to a picture through observation, communication, independent inquiry and practical operation.
3. Emotional attitude and values: cultivate students' interest and exploration spirit in learning mathematics in the form of deskmate cooperative learning, and feel the fun of learning mathematics.
Emphasis and difficulty in teaching
1, teaching focus: master the calculation method of addition and subtraction of 8 and 9, and be able to do the corresponding oral calculation correctly.
2. Teaching difficulties: Write two addition formulas and two subtraction formulas (four formulas for one picture) according to one picture.
Teaching preparation
Wall charts, small red flowers, compact discs, etc.
First, review the basic knowledge and introduce new courses.
1, what the teacher said is interesting: children, in the previous math trip, the teacher took everyone to the math kingdom and learned a lot of math knowledge. Today, we will use what we have learned to tide over the difficulties. Do you have the confidence to challenge?
2. Practice:
(1) Level 1: Calculate to see who can calculate quickly and accurately. Show me the card:
6+ 14+27- 16-43+22+24+36-3
(2) the second level: fill in. (Composition exercises of 8 and 9)
3. Demystifying the title of the book: addition and subtraction of 8 and 9.
The child is so clever that he has learned so many skills. Let's see if we can calculate the addition and subtraction of 8 and 9 by the method we learned before.
Design intent:
Second, explore new knowledge.
1, teaching example 1.
(1) Show the stick map. The teacher asks: How many sticks are there here? Hands up and count together. (8 pieces)
(2) The teacher asked: If eight sticks are divided into two piles, how can they be divided? ( 1,7)、(2,6)、(3,5)、(4,
4)。
(3) Teacher: Choose your favorite division method and talk about how to make a formula. (report by name and write it on the blackboard. )
1+7=82+6=83+5=84+4=8
7+ 1=86+2=85+3=88-4=4
8- 1=78-6=28-3=5
8-7= 18-2=68-5=3
(4) Guide students to observe the formula and tell your findings.
(5) The teacher summarizes the method in Figure 4: a division can list four formulas, two addition formulas and two subtraction formulas. In column subtraction, one added number is subtracted from the added number to get another number. Design intent:
(1) Small blackboard shows Example 2. The teacher asked: Can you help the teacher complete this form by posing?
(2) Set up learning tools to guide teachers to fill out forms.
(3) Discussion at the same table: Observe the watch carefully and tell me what you find. Tell your deskmate what you found. The numbers in the upper row are getting bigger and bigger, and the numbers in the lower row are getting smaller and smaller. The relative two numbers add up to 9. )
Teacher: According to this table, can you write down the addition and subtraction formula of 9 just now? Finished, deskmate communication algorithm.
(4) roll call report and write the formula on the blackboard:
1+8=92+7=93+6=94+5=9
8+ 1=97+2=96+3=95+4=9
9- 1=89-2=79-3=69-5=4
9-8= 19-7=29-6=39-4=5
Design intent:
Third, consolidate practice.
1, I'm the postman.
Heart: 6+28+19—14+51+77+23+64+4.
Teacher: The teacher has two mailboxes, one is mailbox 8, and the small postman who takes the letter will put it in the mailbox number if he wants to count the number of letters.
Answer first: (the child who answers correctly will be rewarded with a small red flower)
3+69—39-22+78+08—88-33+5
Design intent:
Fourth, the class summary:
Teacher: What did we mainly learn today? We know that the addition and subtraction of 8 and 9 can also be calculated by the calculation method we have learned before. Will you forget?
Design intent:
blackboard-writing design
Addition and subtraction of 8 and 9
1+8=92+7=93+6=94+5=9 1+7=82+6=83+5=84+4=8
8+ 1=97+2=96+3=95+4=97+ 1=86+2=85+3=88-4=49- 1=89-2=79-3=69-5=4
9-8= 19-7=29-6=39-4=58- 1=78-6=28-3=5
8-7= 18-2=68-5=3
Teaching reflection
This lesson is arranged on the basis of students' learning the addition and subtraction of 6 and 7, and is paved with learning the composition of 8 and 9. Students have basically mastered the method of "one picture and four bodies" and will use the knowledge of the composition of numbers to calculate the related addition and subtraction.
In the teaching of this class, my design idea is: review and preview (review oral calculation within 7 and composition of 8 and 9)-introduce situation (stick figure)-look at pictures and ask questions, solve them in columns (list two addition and subtraction formulas according to pictures)-hands-on operation (put learning tools and write formulas)-classroom activities (consolidate the addition and subtraction of exercises 8 and 9).
Through the reflection of this class, I think the teaching has done well: First, we can design classroom activities around the learning content with students as the main body, let students learn while talking, pay attention to the cultivation of students' observation ability and questioning ability, and encourage students to speak boldly. Secondly, the imported design effectively stimulates students' interest in learning, and students show high enthusiasm for learning. Thirdly, the design of classroom activities is more in line with the age characteristics of first-year students, so that students can practice the addition and subtraction of 8 and 9 in the game.
Disadvantages: First of all, when teaching the addition and subtraction of 8 and 9, the textbook only lists four formulas of one of them. In order to let students master the addition and subtraction of 8 and 9 more comprehensively, I ask students to write all the addition and subtraction formulas of 8 and 9 in the teaching process. Therefore, it seems that there are more contents and the handling methods are relatively simple, which makes students' learning enthusiasm seem very low. Different activities should be used to let students list formulas, such as grouping calculation formulas.
It not only improves students' learning enthusiasm, but also achieves the purpose of teaching.
Secondly, when you list four formulas in different arrangements, ask students to observe the formulas and say what they find. The students speak too little, and the teacher doesn't sum up well. Two addition formulas and two subtraction formulas have no clear connection for students. Let the students talk more, and then talk on the basis of the teacher's guidance, so that students can fully understand the relationship between the four formulas.
Third, in the process of making students cooperate at the same table, there is not enough guidance for students, and some students do not actively participate in cooperation and exchanges. We should strengthen the guidance for these students.
Fourth, in teaching, more students are not allowed to express their views, but are transmitted from point to surface. Students should be allowed to talk about their own ideas, and teachers can guide them if they are incomplete.
The teaching goal of "eight plus" teaching plan 3 in large class mathematics;
1, the learning number is the addition of 8. I can look at the picture or calculate the formula according to the item.
2. Further understand the meaning of plus sign and equal sign.
3. Experience the fun of playing the same game.
Teaching preparation:
1, teaching aid:
(1) Picture: 8 birds, 8 kittens, 8 rabbits and 8 peacocks.
(2) A picture of a forest
2. School tools: some small snowflakes
Teaching process:
First, the teacher leads the children to do finger exercises and concentrate their attention.
Teacher: "Children! (hey! ) Shall we do finger exercises together? (good) stretch out a pair of small hands and do finger movements together; Open your fist and relax. One, two, three, four, five, six, seven, eight, two, two, three, four, five, six, seven, eight, five, six, seven, six, seven, eight; Swing left and right with open hands, three, two, three, four, five, six, seven, eight, four, two, three, four, five, six, seven, eight, four, five, five, six, seven, eight, eight.
Second, put small snowflakes and review the composition of numbers within 8.
1, the teacher says the number within 8, and asks the children to take out the corresponding small snowflakes in the basket and divide them into two parts. (children's operation)
2. Ask some children to get up and tell everyone how they got it, see if he got it right, and give encouragement to those who got it right. At the same time, the teacher will show the children's score results on the blackboard by means of composition.
Please read these compositions to all the children.
4. The teacher told the children that in order not to miss, we should master a rule when dividing: divide according to the method of one less on the left and one more on the right, so that it is not easy to miss, for example, divide 8 into 1 and 7, and divide it according to the rule of 1 on the left and 1 on the right, that is, 8 can be divided into 2 and 6, 3 and 5.
Third, the teacher teaches children to learn 8 to celebrate Children's Day "6. 1" in the form of many small animals gathering in the forest. The teacher showed pictures of the forest and told the children, "Children, this is a beautiful big forest. Today's forest is so lively! Many small animals gather here to celebrate Children's Day. Are they going to perform a program for the children to celebrate the festival? (happy)
1. Let's watch the first program "Birds Singing" brought by small animals.
(1) shows 1 bird, seven birds fly in. Q * * * How many birds are singing? Q: How did you work it out? (subtraction) formula: 1+7=8. According to the exchange law of addition, the number of two addends remains the same. Who can list another formula? (Child formula: 7+ 1=8. )
(2) Please read the formula1+7 = 8,7+1= 8.
Please watch the second program "Cats Catch Mice" brought by small animals to children.
(1) Two cats catch mice, and six cats catch mice. Q: How many cats are performing Cats Catch Mice on the stage now? (8) How did you work it out? (Addition) Formula: 2+6=8. After seeing this formula, can you list another formula? (Children's formula: 6+2=8)
(2) Please read formulas 2+6=8 and 6+2=8.
The following is a program brought to us by the lovely bunny-the song performance "Bunny Darling".
(1) Show three rabbits, and then five rabbits run away. Q * * * How many rabbits are performing? (8) How did you work it out? Formula: 3+5=8. Can you list another formula? Q: What does 5 mean here? 3 What does it mean here? How about eight o'clock?
(2) All children read the formulas 3+5=8, 5+3=8.
The beautiful peacock heard that Children's Day is coming, and it has arrived. It will also perform programs for children. Please watch the program "Proud as a Peacock and Colorful Clouds" brought by the little peacock to children.
(1) Show four little peacocks to act as proud as peacocks, and then four little peacocks come. How many little peacocks are performing here now? (8) What method did you use to calculate it? How much is (addition) 8? (4+4=8) What do these numbers mean here? (Answer with children) (Read the formula together)
(2) Let children read the addition formula with the number 8.
Fourth, the game of "making up numbers", review the addition method of the combined number less than 8: the teacher shows a number, so that children can read it carefully, then the teacher says a number, and the children also say a number, so that the teacher can say this number, and the children say that the added number is the number shown by the teacher. After showing the number 8, the teacher said, "I will give 1. How much will you pay? " The child said, "You give 1, I give 7, and the teacher: 1+7=? Children: 1+7=8 (repeated game)
Fifth, the teacher summarizes the activities and ends them.
The fourth teaching plan of "Eight Plus", the goal of mathematics activities in large classes;
1, guide children to learn to choose the third answer picture according to the content of the physical picture, and list the formula.
2. Ask children to say the meaning of arithmetic in accurate language.
3. Stimulate children's interest in learning the number 8.
4. Develop good qualities of thinking, doing, studying hard and being happy to learn.
Activity preparation:
1, self-made teaching wall chart.
2, finger games.
Activity flow:
I composition of review 8
1, clap your hands and ask questions.
Teacher: Before class, let's play a game of clapping and answering questions. I will ask and answer you.
2. Fill in the unfinished scoring formula.
Teacher shows 8 unfinished splits: Look at the split above. Have these splits been completed? Please fill in the blanks.
Teacher's summary: 8 is divided into two parts and 7 kinds.
Second, learn the addition of 8 by looking at the teaching wall chart.
1, show the teaching wall chart 1
Teacher: Here are three pictures that tell one thing. Please make the meaning of each picture clear in one sentence. (In the first picture, there are 7 yellow flowers on the grass, in the second picture, there are 1 red flowers on the grass, and in the third picture, there are more than 8 flowers in a * * *. )
Teacher: Which child can make an addition problem by looking at three pictures? Can that child be expressed in a formula? (7+ 1=8)
Teacher: What does this formula mean? The teacher guides the children to say the corresponding meaning. )
2. Show Figure 2
Teacher: Look at this wall chart carefully, children. What are the different characteristics? What's in the picture? Are they the same? (Guide children from different colors, positions and sizes) How many * * *?
Teacher's summary: There are 8 apples, 6 red apples, 2 blue apples, 5 on the plate, 3 on the table, 4 big apples and 4 small apples in the picture.
Teacher: Who can make up an application problem according to the different colors of this apple and express it with a math problem? (6+2=8)
3. Lead children to solve different application problems and arithmetic problems in the same way from Apple's standpoint and self. The teacher wrote the addition formula of 8 on the blackboard in turn. ﹚
Teacher's summary: You see, 8-* *, there are seven addition formulas. Read these formulas together.
Third, finish the activity by playing boxing games.
1, Teacher: Now let's play a boxing game. The hand index given by the child and the teacher add up to 8.
2. Play the game several times.
Effect analysis:
Teaching reflection
Using multimedia courseware to show vivid life scenes is helpful for students to understand mathematics in real life, feel the close relationship between mathematics and daily life, increase their closeness to mathematics and experience the fun of using mathematics.
Encyclopedia: Addition is one of the four basic operations, which refers to the operation of combining two or more numbers and quantities into one number and quantity. The symbol of addition is the plus sign "+". Connect items with a plus sign when adding.
Teaching plan 5 for the goal of "eight plus" activities in large class mathematics
1, understand the meaning of 8 addition through teaching aid demonstration, teachers' and children's activities and oral addition exercises.
2. Cultivate the accuracy, flexibility and agility of children's calculations.
3. Understand the interchangeability and mutual irregularity of the addition of 8.
The focus of teaching is to let children strengthen the accuracy of addition in exercise 8.
Teaching difficulties exercise children's thinking flexibility and discrimination.
Activities to be prepared
1, wall chart, snowflake, homework paper, map.
2, 8 digital headdress, music game tape.
Activity process
First, the beginning part:
Organizing teaching, the teacher walked into the classroom wearing a digital headdress of 8. Hello, children. Today, the teacher brought an 8-digit doll to study with us, which concentrated the children's attention and observation and stimulated their interest in learning.
Second, the basic part:
(1) Review the division of 8 in the form of duet, first according to the complementary relationship, and then according to the exchange relationship.
Teacher: Let me ask you something, little friend. What number can 8 be divided by 1 and?
Yang: Teacher Liu told you that 8 can be divided into 1 and 7. ...
Teacher: Let me ask you something, little friend. 8 How many kinds of division are there?
Yang: Teacher Liu told you that there are seven divisions of 8.
(B) learning the addition of 8
1, the teacher shows a wall chart for children to observe, and guides children to list addition formulas according to the size, color and shape of flowers:
There are 1 yellow flower and 7 red flowers on the picture. How many flowers are there in a * * *? 1+7=8
There are two big flowers in Kobanawa in the picture. How many flowers are there in a * * *? 2+6=8
There are three round flowers, five oval flowers and one * * *. How many flowers are there? 3+5=8
There are four orchids and four purple flowers in the picture. How many flowers are there in a * * *? 4+4=8
2. Gymnastics
Give each child 8 snowflakes, let the children count the snowflakes, and fill in the corresponding numbers on the homework paper.
3. Teachers tour to guide children's operation, reward good children's maps, and strengthen guidance for poor children.
4. Game: Find friends
The teacher gave each child a digital headdress. When children think of music, they look for numbers that add up to 8 and become good friends. This game can be played by exchanging headdresses.
5. Guide children to observe things around and in the classroom. Together, it is the number 8. After returning home, they can also practice arithmetic, such as sugar, apples, biscuits, toys and so on.
Third, the last part:
The teacher comments on the class situation, praises the good children, guides and encourages the poor children to finish class.