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Interaction also helps the teacher to know how much a child has learnt from the school or from the peer. Through interaction, an effective teacher can always create curiosity in a child so that the child would look forward to find out the answers himself. This helps to stretch the child’s thinking and it leads to develop critical thinking skills. By scaffolding, an effective teacher’s suggestion will stimulate a child’s learning. Well directed, explicit teaching, contributes very significantly to the learning which takes place within each child’s zone of proximal development (Peter Westwood, 1996, p.69).  

Lessons may be altered to meet the needs of a child. An effective teacher always turns difficulties to opportunities by using different strategies on different child. Van Kraayenoord and Elkins (1994) have commented that when teaching is viewed as an interactive process, the teacher is sensitive to the characteristics of the students and uses a wide variety of techniques (Peter Westwood, 1996, p 68). There’s no more “one size fits all” strategy on all children in this contemporary teaching. An effective teacher has to think fast and acts fast.