Person who has the trade of directing the practices in a laboratory and who is an assistant to the teacher. A person whose job is to teach a practice or technique. Device that displays images, TV, screen. In the army, Physical Education teacher. Name given to a reptile similar to an iguana or a lizard, also called varano. They belong to the genus Varanus and the family Varanidae. In Biology name of a genus of reptiles of the family Varanidae and that is also called Varanus . They are characterized by having a small head and a long neck.