The lesson plan aims to teach students about human activities and cycles in an ecosystem. The teacher will illustrate the oxygen-carbon cycle and how human activities like deforestation, garbage dumping, kaingin farming, and insecticide use can disrupt these natural cycles. Examples of human disruptions discussed include reduced oxygen from lack of trees, pollution from garbage in rivers, and loss of habitats from kaingin. Students will also learn how natural disasters can damage ecosystems and affect animal and human life.