moving target
1. By manipulating graphics, children can feel the combination and change of graphics and experience the conservation of graphics area.
2. Cultivate children's observation, spatial imagination and judgment.
Activities to be prepared
1, one for each square box, and one for each figure with different shapes.
2. Rectangular, square, triangular and trapezoidal drawings, and one set of triangles with the same number.
3. Put together four records, two or three combination patterns and four stickers.
Activity process
First, floor the playground. Put small figures of different shapes together and feel the combination and change of the figures.
1, hand a basket of small graphics, children put together a big square.
2. Question: How many figures did you use to make a big square?
3. The teacher shows the children the operation results and feels the combination of graphics.
Summary: The children made a square with the same size with different numbers and shapes, which is really capable!
4. Children go to the "playground" building.
Second, build a gate for the playground. Make four triangles into different shapes (rectangle, square, triangle, trapezoid), with different shapes but the same size, and experience the conservation of graphics.
1, children use four triangles to spell out a rectangle and a square respectively.
Ask individual children to come forward and demonstrate what they make into rectangles and squares. Are they the same size?
2. Children exchange materials, operate again, and feel the conservation of graphics.
Q: Are the spelled figures the same size? Why?
The teacher concluded: The children made a rectangle with the same four triangles, and then they made a square. The shape has changed, but the size has not changed. They are the same size.
3. Use the same' four triangles' to spell the triangle and trapezoid again, so that children can exchange discussions and further feel the conservation of graphics.
Q: Are triangles, trapezoids, rectangles and squares the same size? Why?
4. Summary: Four different figures are all composed of the same four triangles, and the size is the same.
Third, the game: "test your eyesight" to consolidate and strengthen the conservation of understanding graphics.
1. Show a pattern composed of triangles. What does the child look like? Is it made up of several triangles?
2. The children find the pattern with the same size as that in the other two pictures. The children talk and discuss the reason: why are they the same age?
Fourth, pave a road for the playground. Discuss in groups and spell out beautiful shapes.
1, show the work, what is the child's creation? What is it spelled with?
2. Pave a road for the playground.
Fifth, play in the "playground" and end the activity.