Why was it "clear"? It was such pure water that you could see the stones at the bottom of the brook.
Why does the poet say it was "free"? There were no logs nor big stones to stop its course. It ran freely on its way.
Do you see any other words that describe its appearance? It is "Flecked with shade and sun".
Now "Flecked" is a hard word. It means spotted or striped. Can you tell me what that means? Sometimes the brook is bright and shining and, in some places, it is shaded by the trees or by the clouds. You can see bright patches on the water.
Now you have told me many wonderful things about this brook; where it began and where it ended, how it grew, how it sang, how glad it was to see the children, and how the children played with it, and how it looked. What does it tell us at first? It tells us where it began.
In the next stanza? It runs a little faster.
In the next? It was glad to see the children.
In the next? The children were playing with it.
In the next? It ran bubbling and singing into the sea.