What is a biocorner?

The biological corner is the natural corner;

The natural corner is a place set up in a corner of the classroom for students to observe natural things and phenomena. Animals and plants, such as fish, turtles, frogs, silkworms and other small animals, potted plants, experimental devices (such as soil capillarity experiments, water evaporation experiments), etc., are usually displayed in a corner of the classroom for students to regularly and systematically observe, allowing them to keep and care, and in the process observe and record changes in various natural phenomena. The individual display of animals and plants is also called a biological corner. It is one of the effective ways for primary school students to learn natural science.

Extended information:

A living body with kinetic energy is also a collection of objects, and individual organisms refer to living organisms, as opposed to non-living things. Its elements include: living objects with the ability to survive and reproduce through chemical reactions under natural conditions, and the living offspring produced by it (or them) through reproduction, which can respond accordingly to external stimuli. , can be interdependent and mutually reinforcing with the external environment. Moreover, it can eliminate useless substances from the body and has the characteristics of inheritance and mutation.

The other goal ball must be pocketed. This is all in line with the principles of geometry. In actual batting, the part where the cue ball is used to hit the target ball is an imaginary ball behind the target ball that forms a "natural angle" with it. Only by hitting this part can the target ball possibly enter the pocket.