Prioritizing the "Aha!" Moment

The goal of learning is not piling up kindling; it's setting the kindling on fire.

If I’m talking with teachers about something like getting math students engaged in problem-solving discourse, somebody will always say, “But what about time on task?” If I’m writing something about argumentation using textual evidence, somebody will always want to comment about time-on-task. You can invent this new strategy or that new reform, but in th…