Read another blog on my PLN and two interesting questions came up. First, how much excitement is there in your classroom? In elementary excitement may sometimes be disguised as activity, but how excited are your students to take part in the learning activity. In middle and high school my guess is that some teachers discount that students need to be excited about learning but that's where they are wrong. A student who is excited about learning will be a successful learner.
Second, is there something in your classroom that piques curiosity? It doesn't even have to be related to the subject matter but just as above and excitement, a curious learner is a successful learner.