एक सहयोगात्मक शिक्षण-अधिगम वातावरण में, शिक्षक की मुख्य भूमिका किस रूप में होती है?

Which of the following is considered a major limitation rather than a characteristic feature of the traditional lecture method?

Which of the following teaching methods is considered most suitable for teaching History effectively?

Which teaching method mainly focuses on 'learning by doing'?