Symmetrical part of teaching plan for large class in kindergarten 1 goal of activity:
1. Symmetry between shape and color was observed.
2. Understand the meaning of symmetry and find symmetry.
3. Correctly judge the symmetrical figure and complete the exercise.
Activity preparation:
1. Items with symmetrical characteristics
2. Symmetrical card wall charts and various color graphics.
3. All kinds of graphics are packed in a paper bag, and children have an activity process:
First, perceptual symmetry.
1. Synopsis: Spring has come, the garden is full of colorful flowers, and beautiful butterflies are dancing happily among the flowers. At this time, a dark cloud came and butterflies were flapping their wings to go home. Suddenly, the butterfly cried: "I lost a wing and can't fly!" " "(arranging half a wing of a paper butterfly in the background picture) It's raining harder and harder. Who will help him find another wing?
2. Let each child pair the butterfly wings in the background picture.
3. Show the matched wings and explain the reasons for matching (same color, shape and size). Guide children to observe, compare and summarize the characteristics of these figures: the left and right sides are the same when folded, and they will overlap when folded together. ) teacher's summary: a figure that can completely overlap after being folded in half, such as a butterfly, has a center line, and its left and right sides are exactly the same in size, color and shape. We call it "symmetry".
Second, find symmetry.
1. The teacher shows half of a picture and asks the children to find the other half to spell it out.
2. Teacher: Actually, many parts of the human body are also symmetrical? Let's look for it. So can the movements be symmetrical? Please point out and perform. )
3. What else have we seen that is symmetrical? Doors and windows, bees, dragonflies, butterflies, books, clothes, hearts, trapezoid, palms, faces, airplane wings, wheels, etc. )
Third, practice judging several groups of pictures in the book (show the self-made wall chart) and see which group of pictures are symmetrical. Just tick "√" in the box below.
Fourth, pour out all kinds of graphics in the game paper bag and find out which graphics are symmetrical respectively. Spelling on the table, the teacher will patrol the guidance.
Five, homework after the completion of the workbook (P20)
Analysis of two teaching villages in the symmetrical part of kindergarten large class teaching plan;
Finding symmetry is a scientific mathematical activity, mainly to let children understand the meaning of symmetry. This kind of teaching teacher does not use direct teaching method, but uses several links of watching, folding, watching and doing to guide children to find, ask and solve problems.
There are a series of problems in teaching. For example, when I asked my children to find out the difference between the left and right sides of the triangle, flower and butterfly, I asked a misleading question: "Find out what is the same or different between the two sides." So children look for differences from nuances and find lines that are not straight and circles that are not round. They didn't look from the direction, so I can only remind them. " However, this is not very clear. In order to highlight the direction, a pattern with obvious direction was drawn to let the children see it more clearly. There are still some shortcomings. After discussion and discussion by teachers, different views on the problem are put forward and solved. In the design activities, the process from easy to difficult is adopted. In designing lesson plans, children are first told to understand symmetrical patterns through the method of "folding and folding", followed by the link of "finding", that is, the first application after understanding the meaning of "symmetry", so that children can find symmetrical interesting patterns on the basis of understanding the symmetry of simple patterns. Most children have understood symmetry and can find the same other half. However, few children are vague and make mistakes, so ask questions in mistakes and help solve them in time, so that children can better understand the meaning of symmetry. In order to add a little interest, the last step is to "find it", mainly to let children consolidate their understanding of "symmetry", so as to find more symmetry of objects. As the first person to study children's operation, the plane patterns drawn in children's textbooks are different from those in real life. So you can't directly see that it is a symmetrical pattern, which is difficult for children to understand. Later, I thought of this problem, so I drew a symmetrical plane image as an example to explain it, but it still didn't work well in children's operation, and I always thought it was an asymmetrical figure, which brought confusion to my teaching and made me feel at a loss.
There are still some places: improper design of questions leads to misleading, which more or less delays the time of teaching activities. I don't know enough about mathematics myself. Before preparing for teaching activities, some subtle places and complex patterns were not carefully studied, which brought difficulties to teaching. At the same time, some places have been brushed aside, making it difficult for children to understand.
Two research activities in one lesson need careful preparation before class, such as teachers' familiarity with teaching plans, teachers' response ability, teaching AIDS and so on. It can be said that this process is painful. However, after the second survey, although there are still some loopholes or deficiencies in some places, it is inevitable that I will be happy to see my little progress.
Design intent:
In terms of subsidies and guidance for children's experience needs, children in large classes in the next semester are not only inclined to apply single numbers or simple addition and subtraction models to mathematics knowledge learning, but also need to absorb and instill diversified mathematics knowledge. Therefore, in the selection of the content of this large class mathematics activity, I chose the knowledge point of "symmetry" in mathematics to give simple guidance to the large class children before entering school. There is no excessive demand for large class children to fully master this knowledge point, but
Activity objectives:
1, learn the mathematical knowledge of "symmetry" in order to understand the meaning of "symmetry".
2. Improve children's hands-on ability in the operating experience and learn to cut simple symmetrical figures.
3. Cultivate children's interest in calculation and the accuracy and agility of thinking through various sensory training.
4. Guide children to be interested in numbers.
Highlights and difficulties of the activity:
1, Difficulties: Chivalry understands the meaning of "symmetry", uses its knowledge points in the process of operating experience, and puts learning and even application in children's teaching classes.
2. Focus: Understand "symmetry" in a broad sense, improve children's hands-on operation ability and experience the fun of learning.
Activity flow:
First, the symmetry and experience characteristics of "play"
Second, the scissors are symmetrical and experienced in operation.
1, say it
Definition: What is symmetry? (refers to two pairs of figures or objects with one-to-one correspondence in size, shape and arrangement)
Step 2 look at it
3. cut it off.
Third, "seek" symmetry and improve understanding.
Find out what is symmetrical in life.
Activity reflection:
"Symmetry" follows the principle of taking students as the main body in teaching design, and fully mobilizes students' creativity. After in-depth study of the teaching materials, I identified the teaching section as five sections:
Section 1: Guess
Junior students can quickly accept interesting things and arouse their enthusiasm to participate in classroom learning. Therefore, I design the lead-in link as "guessing", and show the graphics cut by the teacher, so that students can guess the whole graphics according to half of the graphics they see, thus successfully revealing the concept of symmetrical graphics-the graphics whose left and right parts are completely coincident are called symmetrical graphics.
Section 2: Cut.
In traditional teaching, students passively accept what they have learned and do not give full play to their creativity. So from the perspective of learning effect, students can know what they have learned, but they don't know why. The new curriculum standard puts forward that students can participate in what they have learned, which can stimulate students' subjectivity and creativity. So how to have a more intuitive and concrete perception of symmetrical graphics? After I introduced the concept, I immediately designed "Qieqie". The teacher first demonstrated the cutting of symmetrical figures for students to observe and talked about the cutting process. Obviously, the key to cutting symmetrical figures is to fold them in half before cutting, and then let students recreate what they have learned and let them cut. In this way, students not only observe, but also participate and create, and their enthusiasm is very high, and they have a deeper understanding of the concept of symmetrical graphics.
Section 3: Find it.
Finding the symmetry axis is a difficult point. How to let students find the symmetry axis of cutting graphics correctly? I design the teaching link as discovery, touch and painting. Look for it alone, then discuss it in groups, then draw the symmetry axis independently and communicate with the whole class.
Judging from the assignments shown, most students have mastered the method of finding the symmetry axis, and a few students have been folded in half for several times because of the sectional drawing, which makes it more difficult to draw.
Section 4: Thinking
"Think about it" is an improvement exercise after mastering the basic concepts, which has certain difficulty. Therefore, group learning is the main arrangement in the design, and then through group communication, representatives of the whole class are sent to communicate and collectively correct, and many symmetrical figures are found.
Part V: Talking about it
Mathematics comes from life and is higher than life, so that students can feel the extensive application of mathematics in life and the beauty of mathematics in mathematics class. So at the end of the class, I asked the students to find examples around them and talk about which are symmetrical figures. The students are very enthusiastic and want to show their new knowledge. The learning effect is good.
Kindergarten large class teaching plan symmetry 3 activity goal:
1. Understand the meaning of symmetry, and you can correctly judge whether the graph is symmetrical.
2. Be able to swing correctly and draw the other half that is symmetrical with the figure, and feel the symmetry of the figure initially.
3. You can use the method of folding in half to cut out symmetrical figures and feel the beauty of symmetry.
4. Develop visual perception and judgment.
5. I like math activities, and I am willing to participate in various arithmetic games to cultivate rebellious thinking.
Activity preparation:
Whiteboard courseware, operation paper, scissors, small basket.
Activity flow:
First, the story is imported.
Teachers tell stories to create situations and stimulate children's interest in activities.
Second, save the queen.
By creating a situation to break through obstacles, we can break through the important and difficult points of teaching.
1. By understanding the meaning of symmetry at the first, second and third levels, we can correctly judge whether the graph is symmetrical or not. (key)
Level one: find it.
Teachers restore love by showing half of love and inspiring children to find the other half.
Teacher's summary: Figures with the same size and shape on the left and right, which can completely overlap after being folded in half, are called symmetrical figures. This straight line is its axis of symmetry.
Level 2: 10% discount
Use hand folding to judge whether the figure is symmetrical, encourage children to explore and find that the same shape is symmetrical and the number of symmetry axes is different.
The teacher summed up: It turns out that in symmetrical figures, some have only one axis of symmetry like a semicircle, while others have several axes of symmetry like a square.
The third level: one point
Please separate them, put the symmetrical ones in the smiling face box and the asymmetrical ones in the crying face box.
2. Through the fourth level and the fifth level, we know that the distance between two symmetrical squares and the axis of symmetry is equal. (difficulty)
The fourth level: put a pendulum.
Let the children swing the F squares so that they are symmetrical with the pattern on the left.
Level 5: Fight.
Let the children work together in groups of six, and spell a little soldier on the left that is symmetrical with the little soldier on the right.
3. A gift from the Queen
Show pictures of the queen and introduce that the kingdom of the queen is called "symmetrical kingdom".
Show pictures of gifts and guide children to completely change gifts.
Activity expansion:
Jane Jane
Let the children take the gifts back to the classroom and cut them.
Activity reflection:
Children in large classes are more and more eager to explore. In this activity, the form of breaking through obstacles was designed, which greatly attracted children. Through the activities, I deeply reflected and gained a lot:
1. This connection is obvious.
The whole process of the activity is clear, with the task of saving the queen as the definition, and four difficulties are designed, namely, "finding symmetrical love-folding symmetrical figures-dividing symmetrical objects-posing symmetrical figures", and each level has learning and practice about symmetry; In the specific link of teaching, it is also a very prominent feature to let children participate. The origami game effectively increases each child's participation and successful experience.
2. The combination of electronic whiteboard and PPT.
The various functions of whiteboard provide beneficial help for children to understand symmetry. It completely replaces the blackboard, breaks the restriction that teachers can only sit in front of the computer and use the mouse when using multimedia courseware, gives teachers more room to play, makes teaching more vivid, improves learning efficiency and learning effect, changes the traditional education mode, and gives children more knowledge and interest in learning.
Encyclopedia: Symmetry is the regular repetition of the same part of an object.