The Solution Site offers thematic units for grades K-2. These are high quality lessons, created by teachers. All lessons on the website go through a strict review process before being posted. There is a system to rate and review each unit you use. You can also read the reviews of other teachers before selecting a unit to use in your classroom.
I found a great unit on this website for introducing the D.E.A.R. (Drop Everything and Read) program into your classroom: D.E.A.R.: It’s not just Fawn-ics! This is a wonderful way to start off your school year!