Failure to disrupt: why technology alone can't transform education

Introduction: Education technology's unrequited disruption

Part I. Three genres of learning at scale. Instructor-guided learning at scale: massive open online courses

Algorithm-guided learning at scale: adaptive tutors and computer-assisted instruction

Peer-guided learning at scale: networked learning communities

Testing the genres at scale: learning games

Part II. Dilemmas in learning at scale. The curse of the familiar

The Edtech Matthew effect

The trap of routine assessment

The toxic power of data and experiments

Conclusion: Preparing for the next learning-at-scale hype cycle.