How the child feels and what he knows, that is, what he has been taught by the people around him, tends to flavor his perceptions of events. Past experiences with objects (including people) may have resulted in completely inaccurate of distorted views, What exists is irrelevant to the individual: he responds, instead to what he thinks exists, I hus his own perception of reality shapes the child’s behavior. The teacher of science, like teachers of everything eise, must be concerned with psychological phenomena that interfere with scientific thinking. Fortunately, teachers may replace misconceptions by helping children to focus their senses on the world around them in ways designed to promote objectivity –through the processes of science.