Mathematical understanding of trapezoidal large class teaching plan 1:
1, to stimulate children's interest in plane graphics and their desire to explore.
2. Cultivate children's keen observation and abstract generalization ability.
3. Let the children basically master the characteristics of the trapezoid and find out the trapezoid.
Activity preparation:
A set of courseware, a set of square and trapezoidal learning tools for children.
Activity analysis:
In the process of children's understanding of plane graphics, they have always followed the principle of step by step. Children already know circles, triangles, squares and rectangles. On this basis, it is a process of learning and improvement for children. Aiming at abstract plane graphics, multimedia teaching is used to solve this difficulty in the process of activities, which on the one hand stimulates children's interest, on the other hand better serves children's learning. The focus of this activity is to understand the characteristics of trapezoid, which can be extended to the surrounding life and environment, mainly using breakthroughs such as observation, observation comparison and explanation; The difficulty of the activity is to let the children find two parallel sides, mainly using the methods of observation, explanation and contact.
Activity flow:
First, play courseware import scene import: the graphics kingdom is going to have a party, let's go and have a look. (Show courseware)
Second, expand
1, simply review the graphics you have learned.
2. Lead the trapezoid from the square, let the children know the trapezoid and remember the name.
3. Ask children to operate and compare the similarities and differences between square and trapezoid. Requirements: Let children compare the difference between edges and corners. Question: What do the sides and corners of a square and a trapezoid have in common? What is the difference?
4. Show the courseware and introduce the concept of parallelism.
5. Let the children find parallel lines and explain the concept.
6, find a trapezoid, find parallel lines, review and consolidate.
7. Look for trapezium-like objects in the surrounding life, let children know that trapezium is a relatively stable figure, which is widely used in our lives, and show courseware for appreciation.
Third, end the extension activity: continue to look for trapezoidal items in the surrounding life.
Activity reflection:
This activity can be observed and compared by children, and the basic characteristics of trapezoid can be obtained. Use "trapezoidal baby somersault" to change different postures and enhance children's sense of orientation. Through painting, the trapezoid of learning society is further applied to real life, and science and art are organically integrated to improve children's interest in learning.
Disadvantages:
1. When measuring the distance between the upper and lower sides of the trapezoid, the teacher should first let the children figure out how to measure, then discuss with their peers and finally draw a conclusion, which will be better.
2. When drawing, individual children have poor behavior habits and should be corrected.
Mathematical understanding of trapezoidal large class teaching plan 2 activity objectives;
1, teach children to know the trapezoid, say its name correctly and know its characteristics.
2. Develop children's observation and imagination, and cultivate their analytical and comparative abilities.
3. Stimulate children's interest in learning graphics.
4. Guide children to actively interact with materials and experience the fun of mathematics activities.
5. Stimulate children's interest in learning.
Activity preparation:
1, magnetic teaching AIDS: various geometric figures
2. A rectangular piece of paper and a trapezoidal piece of paper (one for each person) and several colored strips of paper.
3. ladders made of blow-molded paper, origami boats
4. Paper children's hands drawing various geometric figures, and several oil pastels.
Activity flow:
First, review geometry.
Teacher: Little friend, you have learned a lot about geometry. Now the teacher says nursery rhymes. Let's guess what it is, shall we
1, chubby, rolling around is really cute.
2, three sides, three corners, standing like a hill, looks really beautiful.
3, the four sides are equal in length and the four corners are equal in size. It's the most decent thing to be sure.
4, four sides, four corners, the top and bottom are the same length, and the left and right sides are the same length.
Teacher: The children are so clever. They know so many graphic babies. Today, the teacher brought us a new figure, which looks like a rectangle. Now let's take a look. (Showing trapezoid) What does it look like to everyone? (Ladder), this is trapezoidal baby, we call it trapezoidal. (Children talk to each other)
Second, understand the trapezoid
1. Now let's count together. How many sides does a trapezoid have? (4 sides) How many angles does a trapezoid have? Yes, a trapezoid has four sides and four corners, and a rectangle has four sides and four corners. What is the difference between a trapezoid and a rectangle?
Guide children to observe the length of the upper and lower sides (teacher: the upper and lower sides of a rectangle are equal in length, and the upper and lower sides of a trapezoid are equal in length? ) summary: the upper and lower sides of the trapezoid are short and long.
Let's look at the distance between the upper and lower sides of the trapezoid. (same length)
Teacher: It's all the same. Let's do an experiment. Teacher, there are many colored notes here. Let's measure them. Let's start with the top edge. It's so long from the top to the bottom. Let's cut off the extra parts. Starting from the middle of the upper side, the distance between the upper and lower sides is very long, so we cut off the excess. Finally, measured from the back of the upper side, the distance between the upper and lower sides is very long, so we cut off the redundant part. Ok, now let's compare three pieces of colored paper to see if they are the same length. This means that the distance between the upper and lower sides is the same, that is, the upper and lower sides are parallel. (children repeat)
Let's look at the two sides next to the trapezoid. (oblique, like a small slope)
Teacher's summary; A trapezoid has four sides and four corners. The upper and lower sides are long and short, and they are parallel, and the other side is inclined. In fact, there are many kinds of trapezoid. Today we know the special trapezoid, and we will know other trapeziums when the children grow up.
2, children hands-on operation, experience the relationship between rectangle and trapezoid.
Division; On the children's desks, there are rectangles and trapezoids prepared by the teacher for everyone. Let's overlap them, fold them, change them and see what we find.
Guide children to tell their own results. There are two more triangles on both sides of a trapezoid than a rectangle. Please fold back the extra two triangles, and the trapezoid will become a rectangle. Then open the folded triangle and the rectangle becomes a trapezoid again.
The trapezoidal baby we know today is really naughty and cute, and likes to do somersaults. Look, it's tossing and turning, standing like this. Is it trapezoidal? ? It turns over and over, standing like this, is it trapezoidal? How's this? How's this? Yes, naughty trapezoidal baby, no matter how you stand, it is trapezoidal.
Third, children's operation, consolidate the understanding of trapezoid.
Many things in our life are trapezoidal. Is the ladder trapezoidal? (Yes, each grid is trapezoidal. ) look at the boat again. Is the hull trapezoidal? Yes, it's an inverted trapezoid.
There are many beautiful pictures on the children's desks. Choose one you like, see which part of the picture is trapezoidal, and color it beautifully.
Fourth, homework presentation and evaluation.
Let the children tell each other what they are drawing. What part are you drawing? Why?
Activity reflection:
This activity can be observed and compared by children, and the basic characteristics of trapezoid can be obtained. Use "trapezoidal baby somersault" to change different postures and enhance children's sense of orientation. Through painting, the trapezoid of learning society is further applied to real life, and science and art are organically integrated to improve children's interest in learning.
Disadvantages:
1. When measuring the distance between the upper and lower sides of the trapezoid, the teacher should first let the children figure out how to measure, then discuss with their peers and finally draw a conclusion, which will be better.
2. When drawing, the behavior habits of individual children are very poor and should be corrected.
Mathematical understanding trapezoidal large class teaching plan 3 activity goal:
1, to guide children to perceive the basic characteristics of trapezoid.
2. Inspire children to learn to classify according to graphic features and consolidate their understanding of geometric figures.
3. Cultivate children's good operating habits and learn to put used things in the school basket.
Activity preparation: teaching AIDS: several trapezoids; A triangular, rectangular and square piece of paper. Learning tools: trapezoidal, triangular, rectangular and square, suitable for children.
Activity flow:
I. Group activities
1, graphic classification.
Show some rectangles and trapeziums of different sizes and shapes and ask, "Who will put the same graphics together?" Ask a child to operate it. "How many numbers are there in each type?"
2. Know the trapezoid.
Show me the trapezoid. "What is this figure? What is the difference between it and a rectangle? " (They are all four sides and four corners. The upper side of the trapezoid is short and the lower side is long; The upper two sides are flat, different in length, with four corners of different sizes. "
3. Guide children to observe right-angled trapezoid and quadrilateral.
"Are these two figures trapezoidal?" "Which figure is trapezoidal? Where do you see that it is trapezoidal? " It is flat from top to bottom, with different lengths, and its four corners are different in size.
I. Group activities
The first group: variable trapezoid. "Please take a drawing paper and cut it into a trapezoid."
Group 2: Color the trapezoid.
"Look at the numbers in the picture. Please color the trapezoid. "
The third group: trapezoid looking for a home
Trapezoids of various sizes and colors find their own homes.
3, activity evaluation: focus on individual children to demonstrate how to become a trapezoid, inspire children to come up with a variety of methods.
Teaching reflection:
Compared with other activities, mathematics activities in kindergartens are boring and monotonous, which easily makes children lose interest in learning. Because the children in this period are young and their logical thinking has not yet developed, I created an operable environment for the children in this activity, which is rich in materials, selective and operable. Enable children to operate materials independently and express their ideas boldly. Children's autonomy, selectivity and independence have been fully reflected. Through a series of game activities, the preset requirements of the overall goal of the theme have been achieved.
Mathematical understanding trapezoidal large class teaching plan 4 design background
Autonomous learning in the outline of curriculum reform.
moving target
1. Children use the existing knowledge of rectangles and square circles to know trapezoid and ellipse.
2. Through comparison, let children realize the differences and uses of various graphics and satisfy their curiosity.
3. Children make use of the changes in graphics, play games, do handicrafts, and see that their sales are also very clever and magical.
4. Stimulate children's interest in learning graphics.
5. Guide children to actively interact with materials and experience the fun of mathematics activities.
Activities to be prepared
Various shapes of colored paper, glue, scissors.
Activity process
1. Start: Let the children show the triangle, rectangle, square and circle to the teacher respectively, and patiently help the teacher who is not sure.
2. Basic links:
(1) Let the children take out a piece of paper with the same shape as the teacher's hand. Tell your child that this is a trapezoid, because you can climb obliquely from both sides, just like a ladder, so it is called a trapezoid. Then, the teacher overlapped the prepared rectangles to the corresponding positions, drew two vertical lines, and made the trapezoid into rectangles and triangles. Let the children see at a glance that the graphics can be transformed into each other. This trapezoid can be changed into rectangle, square and triangle. Let the children fold the trapezoid in their hands, draw a picture and watch it change.
(2) Teach ellipsis in the same way. Let the children talk about the oval objects they have seen in their lives, and then let them compare circles and ellipses.
3. End the link:
Teachers and children work together to fold objects or spell out patterns with different shapes of paper.
4. Expand:
In addition to these regular shapes, there are many irregular and unknown shapes in life. Please help the teacher find them when you get home.
Teaching reflection
1. Reflection on preparing lessons:
The understanding of trapezoid is too abstract, even if you carry a ladder, children can't tell it is trapezoid. So we can only draw a ladder with a narrow top and a wide bottom to make students intuitive.
2. Reflection on the activity process;
(1) We should talk about trapeziums with different shapes, and fully show them in the process of speaking. Don't let children fix on trapeziums, so as to fully understand their characteristics. Such as isosceles trapezoid, right trapezoid, inverted trapezoid and vertical trapezoid.
(2) The progress is not the main thing, and all kinds of children should take the initiative and do a good job in inspection and individual guidance.
3. Activity effect evaluation:
Basically achieve the goal, it would be better to be more detailed.