The method of folding the triangular three-dimensional blind bag is as follows:

1. Prepare a square origami. If it is not a square, it can be cut into a square.

2. Fold in half along a diagonal of the square, and then unfold it.

3. Then fold both sides towards the center line and then fold them in half.

4. The present situation is folded in half along the diagonal crease.

5. Fold forward and backward along the black line in step 4.

6. Insert both corners of the upper end into the triangular bag, pinch it with your hand and adjust it.

Advantages of origami: origami helps children learn to think and improve their hands-on ability; Origami can also assist our study; It is conducive to cultivating children's good habits and observation and attention; It is good for children's imagination and thinking ability; Can improve children's aesthetic ability; Strengthen children's communication and expression skills; Handmade origami can promote the development of intelligence; Origami can exercise children's will; Enjoy the fruits of your labor.

origami, also known as "craft origami", is an artistic activity of folding paper into various shapes. In most origami competitions, participants are required to fold their works with a piece of intact square paper. Origami is combined with natural science. Origami has not only become a teaching aid for architecture schools, but also developed into a branch of modern geometry. A symbol of peace and commemoration, but also an excellent pastime.