How to make hydrangea

The making method of hydrangea is as follows:

Material: square origami.

Tools: scissors, glue sticks.

1. Prepare a square piece of colored paper and fold the rice word in half.

2. Fold the left and right sides in half and open them.

3. Fold the four corners to the center point and expand.

4. The cutting position is as shown in the figure.

5. Cut all four sides.

6. Cut four squares according to the crease to get a double square, as shown in the figure.

7. Turn to the back.

8. Fold the four small squares in half to the center point, turn to the back, and fold the corner of the middle small square in half to the center point, as shown in the figure.

9. Fold the right angles of two small rectangles in half, as shown in the figure.

10, all four corners are folded in the same way, and one * * * folds six identical shapes and interpenetrates each other. Stick them all together as shown in the figure, and the hydrangea will be folded.

For children, origami games have many benefits. Origami can exercise the flexibility of children's fingers and develop their hands-on ability and innovation ability; Things in life, small animals, vehicles, etc. Become an image origami. In this process, children's spatial imagination will also be improved.

For the elderly, origami games can not only help them use their brains, activate their thinking, and achieve the overall coordination of the trinity of hands, eyes and brain, but also prevent the memory of the elderly from declining. Some sanatoriums use origami as a treatment for patients' rehabilitation.

The "origami mathematics" derived from origami art is proved by equations: theoretically, any geometric form can be simulated by origami. With the help of computer software aided design, today's origami researchers can fold more complicated graphics than before.

In Kamiya Satoshi, a 2m× 2m square paper was folded into a dragon, and its scales and claws were clearly visible. It is said that there are probably no more than 20 successful origami people in the world.

On the other hand, modern origami is not only an art, but also a new science: origami mathematics. It has been applied to the solar panels of artificial satellites, the storage methods of automobile airbags, and even the structural design of the Hubble Space Telescope, all with the help of origami mathematics.