The underlying principle of ‘understanding-based teaching’ is the belief that :

The correct answer is "learners can construct knowledge when provided with a facilitative environment to do so."

Explanation:

Understanding-based teaching is rooted in constructivist learning theories. Under this approach, learners are seen as active participants who construct their own understanding and knowledge of the world through experiencing things and reflecting on those experiences.

Key principles include:

1. Active Knowledge Construction: Rather than passively absorbing information transmitted by a teacher, students build meaning and connect new concepts with their prior knowledge.
2. Facilitative Environment: The role of the educator shifts from being a mere provider of facts to a facilitator who creates a supportive, resource-rich, and engaging environment that encourages inquiry, exploration, and critical thinking.
3. Deep Understanding: Teaching focuses on conceptual clarity, problem-solving, and meaningful learning rather than rote memorization or strict reliance on standardized instruction.

Therefore, the fundamental belief of understanding-based teaching is that learners construct knowledge effectively when provided with a suitable, facilitative learning environment.