Answer: Scaffolding
Explanation:
Scaffolding , according to the concept of Vygotsky is defined as teaching method that involves teacher or to demonstrates the act, interact with student to hint and make them understand concepts,etc so that student can perform the task and achieve goal.
According to the question, Lena is using scaffolding method for interacting and teaching her son so that he can produce certain sounds, they can involve in dialog reading etc.This will improve his understanding achieve learning goals.
