1. Consolidate the understanding of squares, triangles and rectangles, and explore the changes and relationships between graphs.
2, learn to use scissors, will cut out graphics along the sideline.
Second, the focus of activities:
Explore the changes and relationships between graphics.
Third, the activity preparation:
1, a handkerchief.
2, children's activity textbook "Mathematics" P 10 "dexterous hands".
3. A pair of scissors.
Fourth, the activity process:
(1) Magic
1, the teacher shows a monochrome handkerchief. This is a handkerchief. What shape is it? Next, I use this handkerchief to do magic.
Let the children close their eyes, and the teacher will fold the square handkerchief in half. What shape has the square handkerchief become?
Let the children close their eyes, and the teacher will obliquely fold the square handkerchief in half. What shape has the square handkerchief become?
Let each child try to change the square into other shapes.
(2) Cutting, cutting and folding
1, please turn to the children's activity material "Mathematics" P 10 "Skillful Hands" and tell the children: Please cut and fold the square paper with your little hand, make a big transformation and see what shape it has become.
2. Guide children to use scissors correctly, and cut the outline of the square along the solid line. Then, according to the dotted line, fold the reduced square and talk about what figure the square has become.
3, children will be folded graphics cut open, a big picture into several small graphics.