Classroom model essay on understanding mathematical graphics in kindergarten and junior high school 1: understanding ellipse
Activity objectives:
1, initially perceiving ellipses, and being able to distinguish ellipses from other figures.
2. Children can find elliptical objects.
Activity preparation:
The music "Understanding Ellipse" has a number of red and yellow ellipses, a number of various colors of graphics, group operation charts, and each person has an oval and circular card.
Activity flow:
First, the initial perception:
Today we are going to visit the "Graphic Amusement Park". There are still many graphics on the road. Let's read their names as we walk. Children listen to music and review known figures while walking.
1, guide children to observe what graphics are in the "graphic amusement park"?
2. What kind of new friends have come to the "Graphic Amusement Park"?
3. Guess the name of this new friend? Walk along the "ellipse"
4. Click the "Universal Cartoon City" icon to let children enjoy the animation. "The name of the children's song we just heard is" Understanding Ellipse ". Today, three friends were taken to the Oval Kingdom. Let's take a look! "
Second, cognitive understanding:
1, the teacher asked:
What shape is the magic mirror?
(2) What figure are they stepping on the chocolate fountain?
2, visual perception ellipse:
① Show the ellipse to guide children to observe its edge. (Smooth without edges and corners)
(2) Show oval teaching AIDS of different sizes and colors, all of which are oval.
3. Visually identify the ellipse:
① Show the circle and ellipse, and find that the ellipse is flatter than the circle through overlapping comparison. Hula hoop demonstration.
② By comparison, the lengths of the two center lines of an ellipse and a circle are different.
Show all the circles, triangles, squares, rectangles and ellipses of different sizes and colors, and let the children find the ellipses. And verify.
Third, the operating experience:
1, the first group of children color the ellipse: find the ellipse and paint it with the same color.
2. Complete the game "Dinner of Elephants" on page 2 1 in Dido Game Park.
Fourth, experience transfer:
Find out which things you have seen in your life are oval, such as oval eggs, mirrors, packaging boxes, biscuits and so on. "Shall we go outside and see if there is anything oval? Goodbye guest teacher! "
As the music exits.
Understanding of Mathematical Graphics in Model essay 2 "Where is the Trapezoid" in Kindergarten Middle School
Activity objectives:
1. Know the trapezoid and perceive its basic characteristics.
2. Look for trapezium-like objects in the environment and trapezium in life.
3. Be able to operate independently according to the activity rules and speak out the operation results boldly.
Focus of activities:
Knowing the basic characteristics of trapezium, you can find trapezium in many drawings.
Activity difficulty:
Can fully express their own operation results.
Activity preparation:
Experience preparation: know the rectangle and know its basic characteristics.
Material preparation:
Teaching AIDS: a graphic baby (rectangle, square, circle, triangle) house map, a robot map, and several pictures containing trapezoidal elements in life.
Learning tool: find a trapezoid. Pictures, record sheets and pens with different shapes; Color the trapezoid: operation sheets and colored pens with trapezoid and other graphics; Take the ladder home. In order to create a green scene, there are several (trapezoidal) frames with graphic markers scattered on the grass. Trapezoid in life: There are pictures and colored pens of trapezoidal and non-trapezoidal items on the operation record sheet.
Activity flow:
First, the beginning part: situational introduction stimulates interest.
1. Review and consolidate the understanding of rectangles, squares, circles and triangles.
Teacher: Please look at this, children. (Invited) Yes! The king of the graphics kingdom sent an invitation to the teacher, saying that the graphics kingdom would hold a party and invited the children in our middle class to attend. Let's go and have a look! The teacher led the children into the activity room.
2. By searching, reviewing and consolidating the understanding of rectangle, square, circle and triangle, guide children to name the graphics.
Teacher: Can you tell me what graphics are there in your position?
Second, the basic part: where is the trapezoid?
1. Observe the shape of the house in the picture and compare the shape characteristics of trapezoid and square.
Review teacher Fang, show the picture of the house: what is this? What shape is the main body of the house? How many sides does it have? How many angles?
② Knowing Trapezoid Teacher: What is the shape of the roof? How many sides does it have? How many angles? Is this figure the same as a square?
Guide the children to answer after observing and comparing.
③ Teacher's summary: A trapezoid and a square have four sides and four corners; Both sides are flat. The four sides of a square are equal in length and the four sides of a trapezoid are unequal in length. Like this: there are four sides, four corners, and one side is short, the other side is long, and the two sides are flat figures, named trapezoid.
2. Finding a trapezoidal baby can be naughty. It tumbled for a while and lay down to sleep for a while. Look: (Teacher demonstrates) Is this still a trapezoid?
Summary: It turns out that the trapezoid can be placed upside down or lying down, and it is a trapezoid in any case.
① Teachers show all kinds of trapezoids to guide children to find out trapezoids. (PPT) Teacher: "Which of these figures is trapezoidal? Where did you see it? " Children try to find the trapezoid and tell its basic characteristics.
② The teacher shows the robot and finds out the trapezoid on the robot. (Picture) Teacher: The graphic baby has changed and become a robot. Please look for it. Where is the trapezoid on the robot? Take it off.
(3) Looking for trapezium-like figures in life, and consolidating the understanding of trapezium characteristics.
Teacher: Think about it and find out what a trapezoid is in life. Teacher: Look carefully. Do these figures look like trapezoid? Teachers show pictures such as ladders and desk lamps (bases) to further consolidate their understanding of trapezoidal characteristics.
3. Work in groups to further consolidate the understanding of reminders.
① Introduce group activities.
Looking for Trapezoids: Let the children find out the trapezoidal babies hidden in the picture frame, stick them on the record sheet, and write down several trapezoidal babies on the record sheet in their favorite way.
Colour the trapezoid: Do you see the trapezoid hidden in the box? Give them their favorite color in the picture, and finally count how many trapeziums are in the box and record them in your favorite way.
Take the trapezoid home: Please find the graphic baby playing on the grass and take it home. Trapezoids in life: Please find out which objects in life are trapezoids and tick "√" in brackets.
2 children's operation and teacher's guidance.
Guide children to color the trapezoid and count the trapezoid.
Third, the last part: sharing and communication
1. Communicate the operation result.
Teacher: Who can tell me where you found some trapezoidal babies today?
(Children introduce the operation results)
2. Teacher's summary: Today, the children got to know the trapezium in the graphic kingdom and found many trapezium babies. You're great. I hope the king of the graphic kingdom will invite our middle-class children to visit again and look for other graphic babies.
Comprehension of Mathematical Graphics in Kindergarten Middle School Model essay III: Understanding Rectangle
I. Name of the event:
Know the rectangle (middle class)
Second, the design intent:
Knowing rectangle is the teaching content of middle class. In the process of children's understanding of plane graphics, in line with the principle of step by step, children have already known circles, triangles and squares. On this basis, it is a learning process and an improvement process for children. The Guide emphasizes that children's thinking characteristics are mainly concrete thinking in images, and attention should be paid to guiding children's scientific learning through direct perception, personal experience and practical operation, rather than instilling and strengthening training for children in pursuit of mastering knowledge and skills. To this end, I designed this activity to let children boldly participate in the activity and actively put it into practice.
Three. Activity objectives:
1, understand the basic characteristics of rectangles and name them correctly.
2. Rectangles can be correctly recognized without interference of size, color and placement position.
3. Children feel the fun of mathematics through operation and develop the habit of being good at observation in life.
Fourth, activity preparation:
Material preparation:
1, PPT courseware for understanding rectangles
2. A rectangular card and a square card.
3. A child will operate the card for the game.
4. Each person prints a rectangular children's operation card.
5, watercolor pen The child has a hand.
Experience preparation:
Children already know common figures, such as circles, triangles and squares.
Five, the teaching focus:
Understand the basic characteristics of rectangles and name them correctly.
Teaching difficulties:
The rectangle can be correctly recognized without interference from size, color and placement position.
Activity process of intransitive verbs:
(1) situational introduction consolidates children's understanding of squares and leads to rectangles.
1. Children, today the teacher received an invitation from the king of graphics kingdom to take you to visit his graphics kingdom. Let's go and have a look!
There are so many beautiful graphics in the graphics kingdom, let's see who they are. (circle, triangle, square)
A new friend came today. Do you know its name? Let's meet it together.
(2) Show the rectangle, and guide children to discuss the main features of the rectangle through observation and comparison.
1. Show a rectangular baby. Q: How many sides does this figure have? How many angles? What is it like?
It has four sides and four corners, much like a square.
2. Show rectangles and squares and compare their similarities and differences.
Observation reveals the same thing: they all have four sides and four corners, and the four corners are all the same size. Similarities and differences: square, four sides are equal in length; Rectangular, two opposite sides are equal in length, and the other two sides are equal in length. Two adjacent sides are different in length.
3. Definition: A figure with four sides, four corners, the four corners are equal in size, the opposite sides are equal in length, and the adjacent two sides are unequal in length is called a rectangle.
(3) The game of "Finding Rectangle" helps children to consolidate and deepen their understanding of rectangles.
1. The graphics baby in the graphics kingdom likes our children very much, and invites us to play a game to see if our children can get through all the levels.
The first level: first show the operation cards with the same color, neatly arranged, but different sizes, so that children can find out all the rectangles and circle them with a pen.
The second level: neatly arranged operation cards of different sizes and colors, let the children find out all the rectangles and circle them with a pen.
Level 3: Show more and more graphic babies of different sizes, colors and placement positions, and let the children find out all the rectangles and circle them with a pen.
2. After the children finish the operation card, the teacher and the children verify the answers on the big screen.
(d) Guide children to find things similar to themselves in life.
Rectangular babies can be naughty. He has come into our life and changed into many things. For example, in our classroom, rectangular babies have become doors, windows, computers and so on. Can you think of any rectangular baby in our life? (Children raise their hands to answer)
(5) The teacher concluded that the activity was over.
Many buildings or objects in our life are rectangular or are made of rectangles. After class, children can compare and see who finds the most rectangular babies and who is the most observant child.