What is the most effective teaching strategy for large classes?

For large classes, the lecture method is generally considered the most effective teaching strategy. This method involves the teacher presenting information verbally to a large group of students, often supplemented with visual aids like slides or whiteboards. Its effectiveness stems from its ability to efficiently disseminate a significant amount of information to many learners simultaneously, making it highly resource-efficient in terms of time and personnel. Lectures are particularly useful for introducing new topics, providing foundational knowledge, summarizing complex ideas, and clarifying concepts that might be difficult for students to grasp independently. While it may sometimes be criticized for being passive, a well-structured and engaging lecture can inspire interest and provide a clear framework for further study. Other methods like the tutorial method, project method, and role-playing are highly effective for deeper engagement and skill development but are typically more resource-intensive and challenging to implement effectively with very large student numbers due to the need for individualized attention and smaller group interactions.