रखरखाव (Maintenance) अधिगम का वह विशिष्ट चरण है जो अधिगम के ____ चरण का पूर्ववर्ती है।

A teacher is teaching children by the demonstration of a task to correct the performances of an already learned task. The teacher is using the ______ method of teaching.

The task in which the children get experience while enjoying themselves is known as a/an ______.