Evaluate and grade students' class work, laboratory work, assignments, and papers. Prepare course materials, such as syllabi, homework assignments, and handouts. Supervise students' laboratory and field work. Advise students on academic and vocational curricula and on career issues. Effective EVS teaching-learning takes place when children are allowed to explore and observe their immediate environment. A teacher encourages children to observe animals and make pictures on their own with the objectives to develop: creativity of children.