I have a very early P.E. time so it is important for me to get in the subjects that require alot of mental focus in before 9:30. UPSL is our problem solving time. You will notice we are in the classroom each day from 11:20 to the end of the day - uuggh!! It is hard!
I do Writer's Workshop in the aftenoon. The kids enjoy the calming atmosphere after lunch and it is early enough in the day that they are still able to do really good with their writing.
I leave Math and Math Tubs for the end of the day because those are interactive enough kids are always engaged.