वह कार्य जिसमें बच्चे आनंद लेते हुए अनुभव प्राप्त करते हैं, ______ के रूप में जाना जाता 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.

Maintenance is the specific stage of learning which is antecedent to the ______ stage of learning.