By which of the following strategy meaningful clarification on the concept of reflection of light can be given?

Constructivist science pedagogy emphasizes hands-on experiential learning. When learners themselves observe the reflection of light on a white paper screen and draw conclusions, they construct knowledge through direct experience, which leads to meaningful and lasting understanding. Animated videos and charts are passive learning tools, and closed-ended questions limit thinking. Hence option (3) provides the most meaningful clarification.