A child who finds it difficult to do a task alone is able to do it better with the help of more skilled peers and adults. This is termed

A child doing better with help from more skilled peers and adults works in the zone of proximal development.

Accommodation is changing a mental schema to fit new information, a Piagetian idea.

Assimilation is fitting new information into an existing schema.

Equilibrium is the balance between assimilation and accommodation.

The zone of proximal development is the gap between what a learner can do alone and with guidance.

Vygotsky introduced the ZPD, with scaffolding as the support given within it.