The practice of inserting small fish into triangle

The practice of inserting small fish in triangle is as follows:

We need to prepare some materials: colored paper, scissors, glue, pencils and rulers. Colored paper can choose your favorite colors, such as red, blue, green and so on. Scissors should choose sharp scissors to cut beautiful shapes. Glue should be adhesive, so as to stick the paper together. Pencils and rulers are used for drawing and measuring dimensions.

2. We started to make triangle fish. Draw a triangle on colored paper with a pencil, and then measure the side length of the triangle with a ruler to ensure that the three sides are equal in length. Then, cut the triangle along the pencil line with scissors. Repeat this step and cut out multiple triangles of the same size.

We fold the triangle into the shape of a fish. Fold one side of the triangle to the other side of the triangle, and then fold the folded triangle again to form a small triangle. Then, fold the two sides of the small triangle inward to form a smaller triangle. Finally, the two sides of the small triangle are folded outward to form a three-dimensional fish shape.

Fish knowledge

1. There are many kinds of fish, from tiny plankton to giant whales, each with its own unique morphology and survival strategy. Some fish, such as sharks and eels, have sharp teeth and strong muscles, which are used for predation and defense. Others, such as carp and goldfish, are more adaptable to the fresh water environment, with softer bodies and less defense mechanisms.

2. The life history of fish usually includes incubation, growth, maturity, reproduction and death. Many fish will live independently after hatching, but some fish, such as sharks and sturgeons, will continue to rely on their mothers for a period of time after hatching. In the process of growth, fish will exercise their muscles and enhance their defense ability through constant swimming, predation and defense. When fish reach sexual maturity, they will reproduce and produce new offspring.

3. Fish has important economic, cultural and ecological values. Fish is an important food source in many countries, and fishery is also the economic pillar in many areas. In addition, the ornamental fish industry is also very developed, and many people regard fish farming as a hobby. Fish also plays an important role in the ecosystem. They are a link in the food chain and help to maintain the balance of the aquatic environment.