Lowering the lights, I call the preschoolers to attention. Alex and Freddie! I'm going to be calling you to work on your castle projects in just five minutes!" The two boys nod and focus back on their block tower, to which they are trying to attach some dress-up scarves to act as lava. When I call them to the table five minutes later, they come willingly, issuing warnings to their peers: "Don't touch the tower! We're still working on it! Dana says that we can save it." They head over to the art table, set up in the corner of the classroom where they can safely watch their block tower. On the table are a collection of miscellaneous