What and why -- Introduction to educational design research / Jan van den Akker, Koeno Gravemeijer, Susan Mckenney & Nienke Nieveen -- Toward productive design studies / Decker Walker -- Normal and design sciences in education: why both are necessary / Finbarr Sloane -- Examples from the field -- Design research from a learning design perspective / Koeno Gravemeijer & Paul Cobb -- Design research from a technology perspective / Thomas Reeves -- Design research from a curriculum perspective / Susan McKenney, Nienke Nieveen & Jan van den Akker -- Quality -- Assessing the quality of design research proposals: some philosophical perspectives / D.C. Phillips -- What we learn when we engage in design: implications for assessing design research / Daniel Edelson -- Quality criteria for design research: evidence and commitments / Anthony Kelly -- Moving ahead -- From design research to large-scale impact: engineering research in education -- Hugh burkhardt -- Educational design research: the value of variety / Nienke Nieveen, Susan McKenney & Jan van den Akker -- Author biographies.