1. Cultivate children to actively participate in math activities and experience fun in games.

2. Perceive the shape characteristics of various triangles and try to find triangles with the same shape.

3. Cultivate children's interest in graphics and be willing to know triangles in life.

Activity preparation:

1, Montessori line, various triangles and pictures, straws, music, cameras, projectors.

2. Learning tool: form a triangle, page 29 of volume 2 of the exercise book, and form a triangular exercise paper by connecting lines.

Activity flow:

I. Preparatory activities:

Teachers and children greet each other, say hello to guests and teachers, and go to river line.

Q: Please look at which row we are standing in now. (Third row) How many people are standing in the corner? (3)

Online game: changing triangle: teachers and children read children's songs together: changing triangle? What do you exchange for it? I use my hands (or feet and other body parts) to change triangles with various body parts following nursery rhymes.

Second, the collective activities:

1, the formation of perception triangle: Ask children to put out various triangles on the ground with straws, and the teacher will record them with a camera.

2. Perceive all kinds of triangles and collectively verify the characteristics of triangles.

(1) Let the children watch the triangles they just arranged with the projector, and the teacher will guide the children to see if these triangles are exactly the same. Summary: Triangle has various shapes.

(2) Teachers take out different triangles in turn to guide children to observe these different triangles carefully. There is also a conclusion: although these triangles look different, they are all triangles. They all have three corners and three sides.

(3) Let each child take a triangle and touch the corners and sides of the triangle to guide the children to perceive the different shapes of the triangle in the operation.

4. Try to find the same triangle.

Let children play games: find friends (let children listen to the teacher's instructions, according to the shape of the triangle in their hands, find a good friend with the same triangle and take a group photo together).

Third, group activities:

Red Group: Operation Manual Volume II, page 29. Yellow Group: Make a puzzle with the existing triangle.

Green group: connect points of the same color to form triangles of different shapes.

Fourth, tidy up school tools and exchange summaries.

5. Ask the children to find a picture with a triangular object as a gift for the visiting teacher.

Say goodbye to the guest teacher and end the activity.