I feel strongly about how time is spent in my classroom. We have two hours every morning for language arts (reading and writing), fifteen to twenty minutes each day for our calendar math, and an hour for math. In addition, I make sure we have twenty to thirty minutes for free choice.
While kindergartners have 'center' time everyday to play, first graders are not expected to do so. I have a whole host of reasons for including this in our day which I will not go into here. Several teammates have remarked that they wish they could figure out how to include this in their days.
My feeling is that we make time for what we value.
However, I've recently been mulling this over some more. My thinking now is that how much time we spend on something is only part of the question. The quality of that time is equally, if not more, important.
Which is not to say that time is irrelevant. But we could spend two hours on math each day and if we don't use that time well then it doesn't really matter. Contrary to what so many (Bill Gates, Jay Mathews, Arne Duncan, etc) believe, our school days are plenty long. We just need to be using our time better, much better.