LECTURE-CUM-DEMONSTRATION METHOD It is one of Traditional method. this is also known as Chalk and talk method. Teacher centered method. In this method Teacher is active and learners are passive. the essentials qualities in learning science such as independent thinking, power of observation and reasoning can be developed in this method. The teacher perform the experiment in the class and goes on explain what he does. here the students see the actual apparatus and operation and help the teacher in demonstrating the experiment. This method works on the principles of concrete to abstract, and learning by doing. Criteria of a good lecture demonstration method 1. the demonstration should be planned and rehearsed well in advance. planning and rehearsing of the experiment is very essential for it gives confidence in the demonstrator. he find out the difficulties involved in the experiment. so that the lesson will go smoothly and systematically. 2. the teacher should be clear of t