In "Apprentices" in Whirligig, what is Brent and how is he able to fulfill this? Why is the chapter called "Apprentices"?

In the chapter "Apprentices," Brent has arrived in Florida
and begins making his whirligig on the beach, when a group of children find their way
onto his section of the beach. The children are fascinated by his work, and hound him
with questions, which he patiently answers. The children want to learn how to make
whirligigs like Brent, and Brent teaches them. The children return to the beach on
different days as Brent is working on the whirligig, and as Brent teaches them how to
make it, the children also teach him about the beach. As Brent is leaving, he worries a
bit about hurricanes blowing away the whirligig, but then he sees the children working
on skills he taught them and realizes that even if the wind blows his away, more
whirligigs will appear because the children will keep making
them. 

In this chapter, Brent is both a teacher and an
apprentice, and the children both apprentice themselves to Brent and teach Brent new
things. Brent is able to pass on some of his knowledge and start a new tradition of
whirligigs on the beach. The chapter is called "Apprentices" because he meets the
children who become his pupils (and in some ways, his teachers). In each place Brent
goes, he learns new lessons and touches someone else's life in a small way. In Florida,
he connects with these children over the building of the
whirligig.