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High School Biology Department: Outdoor Practice of "Natural Selection"

April 16, 2026

On April 14, 2026, teachers and students of the Grade 9 Biology class held a unique outdoor activity, enabling students to experience the mystery of "natural selection" through practical exploration and deepen their understanding of knowledge related to biological concept of evolution.


As a core content of Grade 9 biology teaching, "evolution" has undergone a long process of human cognition from the germination of early scientific thoughts to Darwin's global expedition and the publication of On the Origin of Species. Diverse selection pressures in nature have shaped the rich and varied biological world, and natural selection is the key driving force behind biological evolution.



To transform abstract theories into intuitive perceptions, this activity was carried out in an orderly manner based on previously learned knowledge. First, students used yarn of different colors to create various "yarn worms" and put forward experimental hypotheses according to the trait differences of these "yarn worms". Then, they went to the lawn to work in groups: one group was responsible for randomly placing the "yarn worms", while the other group acted as "predators" to search for and capture the targets within a limited time. In the relaxed outdoor atmosphere, all students devoted themselves wholeheartedly and gave full play to their abilities, experiencing the intense process of biological survival and predation.


After the simulated predation and lawn cleanup, all teachers and students returned to the classroom to conduct detailed statistics and comparative analysis on the data before and after the experiment. Combining the initial experimental hypotheses, they exchanged ideas, discussed and summarized conclusions, further clarifying core concepts such as "natural selection", "fitness" and "evolution" through heated discussions. The biology department will continue to commit itself to providing students with hands-on practice opportunities to enhance their scientific thinking and inquiry abilities.




(Written by Mengli Wang　　　Pictures by Yanbo Ma　　Reviewed by Qian Zuo)