As of the advent of modern digital electronic teaching tools still some people are using the old teaching methods :A chalk and a blackboard. Some prominent professor claim that it is the most effective. Please pass on your experience on the matter.
For relatively new teaching method, I'd address humanistic methods in which students are encouraged to grow more internally from inside to outside rather than by force of teachers to just fit into the predefined norms or patterns of success. Finland could be the most remarkable country to apply humanistic teaching methods.
As you might agree with: chalks, blackboards, video projectors, interactive digital screens are all just tools. Although better tools may enhance some communication procedures, they are not essentially that effective to change teaching methods fundamentally.
thanks Aryan, but the crux of the matter we are looking at the best method that makes the students or the audience more attracted and attentive to the subject being taught and to grasp it completely without showing disinterest or getting carried away.
In the 80s Dr Bloom showed that tutoring can increase academic success by two letter grades. http://web.mit.edu/bosworth/MacData/afs.course/5/5.95/readings/bloom-two-sigma.pdf
If larger audiences are required, then active learning has some evidence of success: