Mathematics teaching plan for kindergarten large class: quartering method 1 activity goal;
1, guide children to learn to divide an object into four equal parts.
2. Explore the methods of bisection of various objects to stimulate children's interest in bisection.
3. Cultivate children's observation ability and comparative ability.
Activity preparation:
1. Material paper: round, square and rectangular.
2, in kind: cookies
3. Math workbook
Activity flow:
I. Group activities
1, introduce the theme with magic.
Teacher: Today, a magician came to our class. Now, would you please ask the magician to perform magic for us?
2. The teacher shows a rope.
Teacher: Look, children, what is this? How many ropes are there? (1) Do children want to learn magic from magicians?
Teacher: A magician can change one rope into four. Can you believe it?
(1) Ask individual children to perform magic tricks. First, change one rope into two ropes with the same length.
(2) Ask individual children to perform magic and turn two ropes into four ropes of equal length. Tell me how you got here. How do you know they are the same length?
3. The teacher demonstrated the quartering of the circle.
The teacher continued to show round, square and rectangular material paper in the form of magic, and asked the children to demonstrate.
Teacher: Ask children to compare: Are the divided parts the same size, which is larger than the original figure or each divided part? Which is smaller?
4, children's operation, please explore a variety of different quartering methods and various graphics.
The teacher demonstrated how to divide the graph into four parts with a pen on the blackboard.
Second, personal activities.
Teacher: Please turn your exercise books to pages 43 and 44.
The teacher said the operation requirements: 1. Are the items in the following groups equally distributed? Circle the right one.
2. How to divide the following figures into four parts? Draw lines with strokes.
Three. Activity evaluation
Teacher: Please be good children and good friends and tell us how you do it. (Children's communication)
Teacher: That's very clever. It's really good.
Four. Promotional activities
Teacher: In the regional activities after class, let the children play the game of "selling cookies".
Mathematics teaching plan for kindergarten large class: four equal parts and two activity goals
1. Guide children to learn to divide objects into two parts and four parts with the help of four seasons garden design activities.
2. Explore the method of dividing all kinds of graphics into four parts to stimulate children's interest in mathematics.
3. Experience the gardener's hard work through the activities of planting flowers and cultivate children's awareness of greening.
4. Let children understand simple mathematics.
5. Improve the ability of logical reasoning and form a good habit of doing things in an orderly way.
Activities to be prepared
A picture of a square flower bed, several flower bed cards in various shapes such as rectangle, circle and ellipse; Scissors; glue
Activity process
(A picture import, leading to the topic
1. Show pictures of typical flowers in four seasons: winter jasmine, lotus, chrysanthemum and plum blossom.
Teacher: Here are some flowers in a certain season. Can you tell me in which season they bloom?
Under the teacher's demonstration, the children draw these four kinds of flowers on white paper and cut them out.
(B) examples of operation, understanding of knowledge
1. Show me the square flower bed.
Teacher: A small flower bed will be built in Teacher Pei's yard, and all the four kinds of flowers mentioned just now should be planted. Please help me find a way to plant four kinds of flowers in this flower bed, so that each flower occupies the same space. (Children speak freely)
2. The teacher concluded that the square flower bed should be divided into four pieces with the same size, so as to ensure that the flowers in the four seasons occupy the same place.
Teacher: Look at this square flower bed. How can we divide it into four pieces of the same size on average? How to divide it? Are there any other children who are different?
4. Teacher's summary: By folding the square in half, you can get four flower beds with the same shape and size.
Teacher: Let's think, children. Where have you used the method of folding in half in our life? Organize skipping rope, folding handkerchief, etc. )
(C) problem expansion, sublimation classroom
1. Displays various shapes of paper (rectangle, circle, ellipse). Take the children to know some of these numbers.
Teacher: There are many flower beds of various shapes in the garden, all of which should be planted with flowers of four seasons. Please try to divide the flower beds into four different sizes.
3. Assigning tasks, children can choose a flower bed with their favorite shape from three kinds of graphics for equal activities.
4. Complete the task and communicate the results of the challenge:
Who got the rectangular flower bed? How to divide it? Is there any other way?
(2) How to divide the round flower bed into four pieces on average? How do you divide it?
(3) Which shape is the same as the oval flower bed?
The children stick the flowers painted at the beginning of the class on the flower bed.
(4) Extended activities
Think about it, can a triangular flower bed be divided into four flower beds of the same size? How to divide it?
Activity reflection:
In today's math teaching, I have prepared some figures (square, triangle, circle, rectangle, etc. I invite the children to divide the circle into two parts with their own brains, and the two parts should be the same size. Stimulate children's interest, interest is the best teacher for children to learn. Only in this way can we effectively interact with children in teaching. Children are willing to try, let them do it themselves, let them concentrate on how to divide the object into two parts, and also boldly try various methods. However, children are unfamiliar with the word "bisection" and need the help of teachers to better understand it. Through this link, children's interest in learning is improved, and children's mathematics learning becomes a voluntary and happy thing. Also let the children concentrate their thoughts and start to study how to divide them into two parts. After learning dichotomy, the concept of division has been initially formed. The next four parts will be easier for children to master.
The next step "dividing the cake" is to let the children divide the cake into four parts. This material is very good, let children realize that many scenes in life are full of mathematical knowledge, let children learn independently and enjoy learning from it.
After the whole activity, the children gradually realized that it is an effective method to solve practical problems by using mathematical knowledge. Over time, children will consciously think about problems in real life from the perspective of mathematics, and then solve problems, that is, use mathematical knowledge to solve problems in real life. I gained a lot through this activity. As a teacher, I should pay more attention to the importance of mathematics in teaching.
Encyclopedia: In elementary geometry, equal division refers to the symmetrical and equivalent division of geometric figures, where there are both lines and faces. In order to realize bisection, the region is divided into many corresponding graphics, mainly axisymmetric graphics.
Mathematics teaching plan for kindergarten large class: four equal parts and three activity goals
1. Through operating activities, children can perceive that many objects (graphics) can be divided into two parts and four parts, and perceive the relationship between the whole and the parts.
2. Explore various methods of graphic bisection to stimulate children's interest in bisection.
Activities to be prepared
Children's commonly used graphics (rectangle, square, circle), scissors, PPT related to teaching and a magic bag.
Activity process
1. Tell stories, introduce them with stories, and show PPT with story content.
After the story is finished, the design problem: the village chief Yang and Pleasant Goat share the cake. There are as many people as there are. How to share?
2. Name 4-5 children to operate and display the operation results on the blackboard.
3. Please ask all children to participate in the scoring.
(1) The teacher showed the "magic schoolbag" to arouse children's interest. Each group chooses a representative to touch the figure in the pocket, and what figure he touches, and what figure the group shares equally.
(2) The child tries to divide into two parts.
(3) How do you divide the representatives of each group? How to verify?
4. Compare and understand the meaning of dichotomy.
Take the above children's bisection works as examples to guide children to understand the meaning of bisection.
The teacher concluded: We divide an object into two parts with the same size, which is called dichotomy.
5. Divided into four parts on the basis of dichotomy.
(1) Beauty sheep and laziness appear on PPT. Please think about it: There are four people at this time. How should we divide the cake?
(2) Question: What is the quartering method?
(3) Group discussion: How to divide it into four parts on the basis of the original two parts? Discuss at least two methods in each group?
(4) On the basis of discussion, divide the children into four parts.
(5) Children show their own operation results.
(6) Question: How to divide it into four parts? Let the children draw a picture on the picture.
6. Activity expansion:
Show me the irregular plasticine. Can this be divided into two parts and four parts?