Which one of the following is the most suitable to improve children's learning?

Modern pedagogical theory holds that children learn most effectively when they actively construct knowledge — through hands-on engagement, social interaction with peers, and application to real-life situations — rather than through passive reception of information or the mere presence of teaching resources. This constructivist, experience-based view of learning (drawing on Vygotsky's social constructivism and Kolb's experiential learning cycle) underlies most present-day teaching-methodology guidance, including NCERT's National Curriculum Framework.

Among the strategies offered here, only facilitating children to interact with each other on real-life situations places children in that active, socially-mediated role: they discuss ideas, negotiate meaning with peers, and test their understanding against concrete experience — exactly the mechanism that constructivist and experiential learning identify as driving genuine improvement in learning.

• Conducting regular assessment tests measures learning that has already occurred; it does not itself change how children encounter or process new content.

• Explaining content through different examples and illustrations keeps the teacher as the source of understanding; children remain listeners rather than active participants constructing their own understanding.

• Making all types of learning material available in the class addresses resource provision, not use; material being present in a room does not by itself engage children in the sense-making that produces learning.

Facilitating peer interaction on real-life situations is therefore the most suitable way to improve children's learning.