The TPACK model, progressively created by Lee Shulman (1986), Matthew Koehler and Punya Mishra (2006), is used to assist educators in designing lesson plans that are based on using technology to optimize learning for students, in context. However, at every moment in time, educators are actually involved in a complex "dance." That is, deciding what is best for their students, given the content and context to teach. Sometimes, you might want to be focusing only on pedagogy and content, sometimes only technology and pedagogy. I hope you dance!
This is how TPACK was incorporated into the Edmodo blogging project: