We are working on prepositions. We use Kansas Writing and each student got a copy of this page.
They wrote using first, next, then, finally and a preposition in each sentence.
I only had the students do one draft of the paper. When they showed me that they had used the proper format and a preposition in each sentence they got to paint their bug they had drawn earlier in the day. I never saw some of those students complete a writing assignment so quickly!
( The idea came from this site http://www.deepspacesparkle.com/2013/09/09/bug-paintings/)