The formation of scientific thinking is an integral component of the educational process. The formed worldview determines behavior. The content of academic disciplines needs constant interdisciplinary interaction. On the example of a case method, the interaction of students with biology and ecology (synecology) is shown. The paper presents scientific material for teachers of biology, ecology, which can be used in the classroom. The content of the article reveals the nature and dynamics processes, understanding the essence of interaction in nature, is characterized by the integration of knowledge, the priority of worldview education, which allows you to relate to the outside world from the perspective of science and determine the attitude to what is happening, to form its own judgments and make the right decisions to achieve harmony to achieve harmony in the biosphere.

Keywords: case method, trematodes, natural science literacy, scientific thinking, worldview environmental education, interdisciplinary connections.