Other duties of an environmental science teacher include: Supervise students during research projects and fieldwork. Assign and grade assignments, laboratory projects and term papers. Prepare materials for lectures and classroom discussions.They help develop learners the skills and aptitudes necessary to understand ecological issues and take necessary actions. Teachers help their students develop an awareness of creative, dynamic, effective, and efficient environmental protection and management responsibilities. Environmental Science Teachers, Postsecondary. Description: what do they do? Teach courses in environmental science. Includes both teachers primarily engaged in teaching and those who do a combination of teaching and research.