A: I'm going to the beach (heads to sandbox)
B: There's no beach. Oh, THAT"S the beach!
A: Wait, let's get a truck.
B: And build a road!
A: Yes we're building a road. (Child B pours water on the road)
Wait, don't pour water on the road, it's not a...river...wait...yes it is. Let's make a river!
B: Yes, we're making a river, I'll get some water.
The sandbox was a beach, then a road, then a river. By having the freedom to play, children are able to allow their minds to flow through different possibilities. This can lead to potential conflict with other playmates, but when they both have the freedom and time, they can create ideas that allow them both to play and expand on that play. Think of how helpful this is in later relationships!