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How to fold a racing car
The folding method of the racing car is as follows:

Take out a piece of A4 paper, fold it in half, and cut it in half with a hand knife. The origami racing car only needs half the paper. Fold a triangle on both sides of the paper, then fold a triangle on the opposite side to form a cross on each side; Fold inward at the intersection, both sides are the same.

Taking the center of the cross as the point, the paper on both sides is folded inward into a triangle; While lifting the two wings of the triangle; Fold the big triangle on the other side to the side where the wings are raised, just opposite the triangle edge; Then press your wings on the triangle and press hard.

Then fold the small rectangle, turn it over and fold it in half; Put up the last small rectangle and the wings on both sides. Connect the two wings with small transparent glue. In this way, the car is folded.

value of function

For children, origami can exercise the flexibility of children's fingers and develop their hands-on ability and innovation ability; Origami must be done step by step. In this process, children can also develop the good habit of doing things step by step, and also cultivate their own observation and attention.

Because of its strong plasticity, origami can develop children's creativity, imagination and thinking ability in images; 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 help them use their brains and activate their thinking, so as to achieve the overall coordination of the trinity of hands, eyes and brain, and also prevent the memory decline of the elderly. In some sanatoriums, origami is used 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, origami researchers can fold more complicated graphics than before. In Kamiya Satoshi, people folded a dragon with scales and claws from a square piece of paper 2 meters by 2 meters. It is said that there will probably be no more than 20 people folded out all over 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 storage of parachutes, satellite solar panels, car airbags, and even the structural design of Hubble Space Telescope has benefited from origami mathematics.