"Understanding Triangle" Small Class Teaching Plan 1 Activity Target
Knowing a triangle and knowing that it has three sides and three angles, it's time to review the consistency.
Cultivate children's observation ability and comparative ability.
Guide children to actively interact with materials and experience the fun of mathematics activities.
Willing to participate in activities and experience the fun after success.
Teaching emphases and difficulties
1, know triangles, and know that triangles have many shapes.
2. Distinguish between triangles and squares.
Activities to be prepared
Teaching AIDS: triangular colored paper or blow-molded paper, equilateral triangle, isosceles triangle, right triangle, acute triangle and obtuse triangle, each 1 block. Enough for each child to make 1-2 triangular sticks (different lengths) and a square colored paper.
Activity process
1. What does a triangle look like? The teacher shows an isosceles triangle and tells the children that it is a triangle. How many sides does a triangle have? How many angles?
The teacher concluded: This is a triangle. A triangle has three sides and three angles. We call any figure with three sides and three angles a triangle.
2. Review the understanding of triangles. The teacher showed a right triangle. Let children think about what shape it is. Why?
Compare it with a square and see the difference. The teacher asked the students to name a text and find out the difference between a square and a triangle.
Teacher's summary:
A square has four sides, a triangle has three sides, the four sides of a square are equal in length, and the three sides of a triangle are unequal in length; A square has four corners and a triangle has three corners; The four corners of a square are the same, but the three corners of a triangle can be different. (The teacher demonstrates while talking)
4. Are they all triangles? The teacher showed all kinds of triangles. Ask the students to tell if they are triangles. Why? Children only need to answer "triangles, because they all have three sides and three angles".
Teacher's summary:
A triangle has three sides and three angles.
A triangle has many brothers. Although they look different, they are all triangular.
③ The three sides of a triangle can be different in length and the three angles can be different in size.
As long as a figure has three sides and three angles, they are triangles.
5. Let children look for something similar to a triangle in common objects.
6, children's operation. Put many sticks of different lengths on the child, and count three sticks to make a triangle (you can find sticks of the same length or sticks of different lengths; If you do it quickly, you can do the second and third.
Teaching reflection
My math class is to let children know triangles, and the difficulty is how to distinguish triangles from squares. In this teaching process, I put many sticks with different lengths on the children's desks and asked the children to count three sticks to form a triangle (you can find sticks with the same length or sticks with different lengths). By letting them operate with their hands, the children further realized that 1, a triangle has three angles and three sides. 2. The lengths of the three sides of a triangle can be different, and the sizes of the three angles can also be different.
Small class teaching plan of "knowing triangle" 21. Activity goal
1, guide children to know triangles.
2. Guide children to identify triangular objects.
Second, the activity preparation
1, triangle model
2, triangle related items
3. Triangular foam
4, children's operation card
Third, the activity process
1, scene introduction: It's time for snacks. Small animals are eating snacks around the table.
Please look at the shape of snacks. Do you know these shapes?
2. Communication and exploration: guide children to know triangles and distinguish triangular objects.
(1) The teacher guides the children to enter the cognitive link and guide them to initially perceive the triangle.
(2) Look, the snacks of the tiger and the dog are the same shape. Do you know what shape it is?
3. Teachers guide children to know the main features of triangles.
(1) The teacher shows triangle cards and triangle foam learning tools to guide the children to say the main features of triangles.
(2) Children, please observe carefully and say what the triangle looks like.
(3) Think about it, what's the difference between a square and a triangle?
4. Practical operation: guide children to operate the contents of the card. Guide children to identify the shape of objects and look for triangular objects.
5. Summary: The closed figure of the triangle is a triangle, and there are many triangular objects around us, such as small red flags, clothes hangers and roofs.
Four. Activity suggestion
Guide children to operate exercise cards by themselves, learn and explore, and find out the triangles in mosaic graphics.
The expansion of verb (verb's abbreviation) activity
(1) Guide children to find triangular objects from the activity room, home or other places.
(2) In the corner of the area, guide children to assemble graphics with round, square and triangular building blocks or cards.
"Understanding Triangle" Small Class Teaching Plan Part III Activity Objectives:
1. Guide children to initially perceive triangles, know their names and shape characteristics, and know the diversity of triangles in exploration and operation activities;
2. Triangles can be found without interference from other graphics;
3. Cultivate children's hands-on operation ability and develop the flexibility of thinking.
Activity preparation:
Teaching AIDS:
1, various triangles; Digital card;
2. Stars, diamonds and diamonds 1.
Learning tools:
1, 3 pieces of paper with different lengths (one set for each child);
2. Various graphics: circle, square, rectangle and triangle;
3. Graphic puzzles;
4, rubber pad with one hand.
Activity flow:
First, explore the operation:
1, please take three pieces of paper with different lengths and make a picture. Children's exploration activities, guided by teachers.
2, children show their own graphics, the teacher collectively said, what kind of graphics to put, how many pieces of paper to use, how many angles;
Second, understand the characteristics of the triangle
1, "Good boy! Now please invite today's graphic guests. " Show the triangle and guide the children to count the angles and sides of the triangle. (The teacher numbers triangles according to the angles and sides counted by the children) 2. Show the stars, squares and diamonds. Let the children tell if they are triangles.
2, show a variety of graphics, let children put aside the triangle classification. (The second operation consolidates the understanding of triangle features)
3. Operation: Children are holding a graphic puzzle. Please find out the triangle and color in the picture.
4. Show your pictures to your parents.
Third, the activity is over.
"Understanding Triangle" Small Class Teaching Plan Chapter IV Activity Objectives
1, teach children the names and main features of triangles and life, and know that triangles consist of three sides and three angles.
2. Teach children to compare triangles with common objects in life and find objects similar to triangles.
3. Develop children's observation and spatial imagination. Cultivate children's hands-on operation ability.
4. Experience the fun of math group games.
5, preliminary training observation, comparison and reaction ability.
Activities to be prepared
1, 6 triangles of different sizes.
2.4 Physical pictures composed of graphics.
3. Children have three triangles.
Activity process
First, review the number of 3.
Guide children to count objects with their hands and mouth for 3 minutes.
Through horizontal and vertical rows of points and random rows of points at three points, children's hands and mouths can be counted consistently, and the three points are connected into a triangle.
Second, learn the characteristics of triangles
1, guide children to observe and compare graphs. Each child has a triangle.
Count it yourself. Try it, feel the graphic features, let the children fully express it and get the graphic features.
2. Guide children to observe several triangles with different shapes and sizes, and get three sides and three angles through verification; A figure with three sides and three angles is a triangle.
3. The teacher summed up the characteristics of the triangle to make the knowledge acquired by the children complete.
Third, review and consolidate the characteristics of the triangle
1, find friends for the graphic baby, and let the children find triangles from many geometric cards.
Let the children find the triangles one by one and tell the reasons.
2. Ask the children to find triangles from the jigsaw puzzle and show the pictures one by one.
Let the children observe and say these images. What?
Which parts are made up of triangles? How many triangles were used?
3. Let the children find something similar to a triangle in the surrounding environment.
Extended activities:
Add sorbet sticks and straws in the corners of the area to let children spell triangles and consolidate their understanding of triangles.
Chapter 5 Activity Objectives of "Understanding Triangle" Small Class Teaching Plan:
1, through observation and operation, know the characteristics of the triangle and know the triangle.
2. Cultivate children's observation ability and operation ability.
Activity preparation:
1, triangle diagram, drawing point base map, fountain pen, triangle combination wall chart, triangle objects arranged around the classroom.
2. Square wax paper, scissors, glue and drawing paper.
Activity flow:
1. Import: A graphic baby came to visit our class. Want to know what kind of graphic baby it is?
2, show the triangle, let the children say the name of the triangle, and then let the children find something similar to the triangle around the classroom.
3. Ask a question: "How do you know they are the same shape as the baby triangle?" Guide children to touch the corners and sides of the triangle with their hands and experience the shape of the triangle-three corners and three sides.
4, show the triangle combination diagram:
1) Guide the children to find that the patterns on the wall chart are all composed of triangles.
2) Ask children how to know that it is composed of triangles.
5. Show the picture on the left and let the children connect the points with straight lines to form a triangle.
6. Teachers and children talk about connecting triangles.
7. Cut and paste flowers:
1) For example, guide children to observe what graphics the teacher's flowers are pasted with.
2) Ask questions: What if there is no triangular wax paper? (Guide children to fold and cut squares into triangles for pasting.
"Understanding Triangle" Small Class Teaching Plan Chapter VI Activity Objectives
1. Understand the characteristics of triangles through observation and operation.
2. Cultivate children's observation ability and operation ability.
Activities to be prepared
1, triangle diagram, drawing point base map, fountain pen, triangle combination wall chart, triangle objects arranged around the classroom.
2. Square wax paper, scissors, glue and drawing paper.
Activity process
1. Import: A graphic baby came to visit our class. Want to know what kind of graphic baby it is?
2, show the triangle, let the children say the name of the triangle, and then let the children find something similar to the triangle around the classroom.
3. Ask a question: "How do you know they are the same shape as the baby triangle?" Guide children to touch the corners and sides of the triangle with their hands and feel the shape of the triangle-three corners and three sides.
4, show the triangle combination diagram:
(1) Guide children to find that the patterns on the wall chart are all composed of triangles.
(2) Please tell your child how to know that it is composed of triangles.
5. Show the pictures and ask the children to connect them into triangles with straight lines and points.
6. Teachers and children talk about connecting triangles.
7. Cut and paste flowers:
(1) Show an example: Guide children to observe what graphics the teacher's flowers are pasted with.
(2) Ask the question: What if there is no triangular wax paper?