Seawalls are hard engineered structures with a primary function to prevent further erosion of the shoreline. They are built parallel to the shore and aim to hold or prevent sliding of the soil, while providing protection from wave action (UNFCCC, 1999).
Making the world better, one answer at a time. Vygotsky is best known for is theory of language acquisition, particularly the idea of scaffolding and the zone of proximal development.
However, Vygotsky's constructivist theory, which is often called social constructivism, has much more room for an active, involved teacher. For Vygotsky the culture gives the child the cognitive tools needed for development.