Computational Thinking for Youth in Action (2011) This is an early paper of Computational Thinking that has a lot of traction. It's where we first describe the Use-Modify-Create trajectory.
Elementary School Water Cycle overlay module - Water as a Shared Resource This is an overlay for a 5th grade that adds computational thinking, modeling and simulation on top of an existing Water Cycle lesson.
Computational Thinking Resources The attached documents can provide background information for teachers on Computational Thinking.