Teachers’ knowledge is situated, event-structured, and episodic. Technology, pedagogy and content knowledge (TPACK) – one form of highly practical professional educational knowledge – is comprised of teachers’ concurrent and interdependent curriculum content, general pedagogy, and technological understanding. Teachers’ planning – which expresses teachers’ knowledge-in-action in pragmatic ways -- is situated, contextually sensitive, routinized, and activity-based. To assist with the development of teachers’ TPACK, therefore, we suggest using what is understood from research about teachers’ knowledge and instructional planning to form an approach to curriculum-based technology integration that is predicated upon the combining of technologically supported learning activity types within and across content-keyed activity type taxonomies. In this chapter, we describe such a TPACK development method.https://scholarworks.wm.edu/bookchapters/1005/thumbnail.jp