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.
My Robotic Friends (cups activity) This is the cups activity by Thinkersmith (later part of Code.org)
An Example of CT in the Workplace This is an example of how a computer modeler uses various aspect of computational thinking while designing, creating and using a computer model as a tool to think with.
Computational Thinking Resources The attached documents can provide background information for teachers on Computational Thinking.