Thinking Creatively: Teachers as Designers of Content, Technology and Pedagogy
explains TPCK - the interrelationships between Content, Pedagogy, and Technology Knowledge
Part 1

Part 2

Part 3

Part 4

Theo Jansen is referenced in part 4, as well as Sodaplay, a site for creating in the classroom

Part 5

More recent thoughts from Punya Mishra

and from Sugarta Mitra

Shulman and the intersection of pedagogy and content knowledge