The decomposition of large class math 6 and the activity goal of composition 1 are the starting point and destination of educational activities, which play a leading role. According to the characteristics of large-class children, I have set the following activity goals, namely:
1, children feel the decomposition of 6 through independent exploration and hands-on operation, and say five points of 6.
2. On the basis of the decomposition and composition of perceived numbers, master the laws of number increase and decrease and mutual exchange.
3. Develop children's ability to observe, analyze and record, and cultivate children's interest in mathematics activities through games.
4. Cultivate children's good operating habits of cooperative and orderly operation.
5, like math activities, willing to participate in various arithmetic games, and cultivate rebellious thinking.
At the same time, I take understanding and mastering the decomposition and composition of 6 as the focus of this activity, let children boldly participate in the activity, and take actively exploring and discovering the law of 6' s separation and integration as the difficulty of this activity.
In order to better serve the goal and complete the activities, I have made the following preparations:
1, math card 1-6, one for each person.
2. Panda-patterned CDs, one with red background and the other with green background, 6 for each person.
3, "and disc game" record sheet.
The Outline points out that teachers should be supporters, collaborators and guides of learning activities. Therefore, in this activity, I mainly adopted three teaching methods: mainstay, multi-sensory participation and free discussion.
For the use of these three methods, I "changed" the traditional teaching mode-the teacher preached, "for" children as the main body, inspired and guided children to think and answer questions, developed children's thinking ability, and let children explore the decomposition of 6 in a relaxed and happy atmosphere through games.
In activities, guide children to acquire knowledge through observation and exploration, and actively participate in activities through hands-on operation.
Combined with the age characteristics and activity goals of large class children, I designed the following three links:
The first part, the story teller: Autumn is coming, and Dashu's mother is busy writing letters, writing here and there, and all the red leaves and yellow leaves are finished.
Many small animals have received letters from Mother Tree. Guess what is written in mother tree's letter? (Tell the little animals to prepare for the winter) Teacher: The little animals have received the letter from Mother Tree and built many new houses, ready to spend the winter warmly in the new houses.
Teacher: The panda family has been allocated two houses. How many pandas in the panda family (including * * * six plus children) showed their number card "6".
Teacher: How to divide six pandas into two houses? The panda is worried. I don't know how to divide it. There are several kinds of distribution. Please tell the children.
The second link, the game: Disrupting helps pandas to separate.
1, each child takes 6 discs and guides the children to play the game of scattering discs.
The teacher asked the children to scatter six disks on the table to see how many are red and how many are green, and record the different findings on the record sheet.
2. Children operate and record the different results of spreading CDs.
3. Divide the children into groups and discuss according to the recorded results. How many points did the panda get? Group summary 6' decomposition combination represented by numbers.
4. The teacher records on the blackboard according to the children's answers.
The third link is to explore the opening and closing law of observation 6. In order to let the children end the activity in a relaxed and happy atmosphere, I adopted the method of changing the voice to end the part, which is beneficial for the children to consolidate what they have learned and end the activity in a natural state.
Observe that 12345 is on the left and 5432 1 is on the right. The larger the number on the left, the smaller the number on the right.
Teacher's summary: A number can be divided into two smaller numbers, one decreasing and the other increasing, and the total number remains the same.
The above is the content of my lecture, thank you!
Activity reflection
According to the spirit of the new syllabus, the design of this activity requires children to "perceive the quantitative relationship of things from life and games", and also pays attention to children's ability to explore, operate, communicate, solve problems and cooperate. This semester, the children in our big class have learned the decomposition and composition of numbers within 2-5, and the children have had some experience in the composition of numbers. I try to let the children do it by themselves, then record the results, find the law of decomposition and composition under the guidance of the teacher, let the children play middle school, and achieve the combination of activity goals and children's interest optimization.
Decomposition and synthesis of mathematics 6 in large class teaching plan 2 activity goal;
1. Children feel the decomposition and composition of 6 through independent exploration and hands-on operation, and master the five points of 6.
2. On the basis of the decomposition and composition of perceived numbers, master the laws of number increase and decrease and mutual exchange.
The division of 3.6 can be recorded in sequence.
Activity preparation:
6' s opening and closing point diagram, 6' s opening and closing blank record sheet, pen and children's picture book (volume III P39)
Activity flow:
1. Import:
(1) Children observe kittens and divide six fish into two kittens. How do they divide it?
Teacher: Mother cat bought six fish for her baby cat. Please give two kittens a point.
Let the children talk about their scores, and the teacher will record the results of each score.
2. The teacher summed up the children's points and summed up the five points of "6".
3. Observe children's disorderly division and guide learning to decompose "6" in an orderly way.
(1) The teacher showed six kittens how to divide small fish, and counted the number of small fish with the children and recorded the results. "6" can be divided into 1 and 5,2 and 4,3 and 3,4 and 2,5 and 1.
(2) Children observe the decomposition formula of "6", initially grasp the orderly decomposition composition of "6", and understand the law of number increase, decrease and exchange.
2. Consolidate new knowledge: Just now we have learned the division of 6 and learned to keep accounts. Next, please be a mother rabbit and give carrots to the baby rabbit. How to divide it? Please separate them in order.
3. Children's operation;
Mother rabbit picked some carrots. Please tell us how to give them to the little white rabbit and the little black rabbit. Please come up and share a little. Complete the operation
4. Teachers tour to guide and show children's homework.
5. The activity is over.
Decomposition and composition of the design background of 6 teaching plans 3 in large class mathematics
After learning the decomposition and synthesis of numbers within 2-5, a child suddenly asked me this day: "teacher, I know the decomposition and synthesis of 5, but we will be six years old soon." Can you tell us the decomposition and composition of 6? " Children have had some experience in the composition of numbers. I try to let the children do it by themselves, then record the results, find the law of decomposition and composition under the guidance of the teacher, let the children play middle school, and achieve the combination of activity goals and children's interest optimization. Recently, we learned two poems, The Name Card of the Tree and Letter from Mother Tree. The children know that autumn is coming, and Mother Tree tells the little animals to prepare for winter. Combined with the content of poetry, this activity tries to divide the house for small animals and learn the decomposition of 6.
moving target
1, children feel the decomposition of 6 through independent exploration and hands-on operation, and master the five points of 6.
2. On the basis of the decomposition and composition of perceived numbers, master the laws of number increase and decrease and mutual exchange.
3. Develop children's ability to observe, analyze and record, and cultivate children's interest in mathematics.
4. Experience the fun of math group games.
5. Cultivate children's comparative judgment ability.
Emphasis and difficulty in teaching
1, focus: perceive the relationship between the whole and the part, learn and record the five points of 6.
2. Difficulties: Summarize the law of decomposition and synthesis of numbers within 6.
Activities to be prepared
Teaching AIDS: a large wall chart (there are two houses on the map, and there is a decomposition of 6 spaces on both sides of the map), 6 panda cards, markers and recording paper.
Learning tools: each child has a picture (there are two houses on the picture, and there are spaces on both sides of the picture with a score of 6).
Each person has 6 animal cards, pencils, erasers and 1-5 digital cards.
Activity process
(a), the beginning part
1, import:
Teacher: Autumn is coming. Mother Dashu is busy writing letters, writing here and there, and all the red leaves and yellow leaves are finished.
Q: Who has received the letter from Mother Tree? Guide children to answer which small animals have received the letter from mother tree.
Q: What did Mother Tree write in her letter? Tell the animals to prepare for the winter.
Teacher: The little animals received the letter from Mother Tree and built many new houses. They are going to spend the winter in the new houses.
2. Show the big wall chart, which leads to "the decomposition of 6"
Teacher: The panda family has been allocated two houses. There are several pandas in the panda family (including six with children) to display the digital card of "6".
Teacher: How to divide six pandas into two houses? The panda is worried. I don't know how to divide it. There are several kinds of distribution. Please tell the children.
(2) Basic part
1, please help your little animals to divide the house.
(1), children observe their learning tools, talk about what small animals they are and count the number of small animals (6).
(2) Children divide six small animals into two rooms and record the results of each division.
2. Let the children talk about the results of their own points. The teacher recorded the children's division of labor on the record paper.
3. The teacher summed up the children's points and summed up the five points of "6".
4. Observe the disorderly division of children and guide the orderly decomposition of learning to form "6".
(1), the teacher demonstrated that six pandas were divided into houses, and counted the number of small animals in the two houses with the children, and recorded the results. "6" can be divided into 1 and 5,2 and 4,3 and 3,4 and 2,5 and 1.
(2) Children observe the decomposition formula of "6", initially grasp the orderly decomposition and composition of "6", and understand the law of number increase and decrease and exchange.
5. The child divided the house for the small animals for the second time, tried to break down the "6" in an orderly way, and recorded the results of each division.
(3), the end part
The game "find friends"
Each child chooses a digital card (1-5) to wear, and together with the music of finding friends, find the child with the number "6".
Teaching reflection
According to the spirit of the new syllabus, the design of this activity requires children to "perceive the quantitative relationship of things from life and games", and also pays attention to children's ability to explore, operate, communicate, solve problems and cooperate. This semester, the children in our big class have learned the decomposition and composition of numbers within 2-5, and the children have had some experience in the composition of numbers. I try to let the children do it by themselves, then record the results, find the law of decomposition and composition under the guidance of the teacher, let the children play middle school, and achieve the combination of activity goals and children's interest optimization. The design idea of the activity comes from two poems we recently learned, namely "The Business Card of the Tree" and "Letter from Mother Tree". The children know that autumn is coming, and Mother Tree is busy writing letters. Mother tree told the little animals to get ready for winter. According to the content of the poem, this activity tries to divide houses for small animals. Children can feel the decomposition of 6 through exploration and independent operation and master the five divisions of 6. On the basis of digital decomposition, they can master it
The activity revolves around allocating houses to small animals. Each child is assigned to six small animals, which are different, including six puppies, six kittens, six rhinos, six elephants and six lions. Every child also has a picture with two houses. Lovely teaching AIDS, coupled with children's happy mood to help small animals divide the house, fully mobilized the enthusiasm of children to operate and explore independently. In the process of assigning houses to small animals for the first time and recording them, the children found five ways to divide "6" through calculation and exploration. When showing children's housing distribution records, some children did not find out five ways to divide "6", and some divided figures did not add up to "6". This is the first time a child has tried recording. I will pay more attention to those who have not mastered it in the next link. Next, guide and observe the disorderly division of children. The teacher will demonstrate that six pandas are divided into houses, count the number of small animals in the two houses with the children, and record the results of the division. "6" can be divided into 1 and 5, 2 and 4, 3 and 3, 4 and 2, 5 and 1, which leads to the orderly decomposition of learning to form "6". Children will observe "6". When children divide small animals into rooms for the second time, they master the orderly decomposition of "6" and record the results of each room division. The activity ended in the cheerful atmosphere of "Find Friends" game, and the children realized the combination of activity goals and children's interest optimization through exploration, operation, communication, playing and learning.