Both experiential knowledge (others and one's own) and received knowledge are useful when a teacher goes to practice. This is the combination of ‘craft and ( )science' knowledge. The learning stage is followed by practice.The term 'practice'can be used in two senses. In one sense, it is a short period of time assigned to do teaching practice as part of one's pre-service education, usually under the supervision of instructors,This practice is also called ( ) practice. The other sense of 'practice is the real classoom teaching that a teacher undertakes after he/she finishes formal education.