Sarah is learning to ice skate. Her grandpa is an experienced skater and first helps Sarah to stand up on her skates and balance herself. After she is able to stand on her skates comfortably, he offers her support by having her hold onto his arm while she learns to move around on her skates. After some practice, Sarah can skate in a straight line by herself. What concept of Vygotsky’s explains Sarah’s grandpa’s actions?
Responses

conservation
conservation

scaffolding
scaffolding

object permanence
object permanence

egocentrism
egocentrism

reversibility