1. What is play?; 2. Children's perspectives on play; 3. Families at play; 4. Digital play and digital tools to support learning; 5. Playing in schools; 6. Lenses on play: classical and developmental theories of play; 7. Lenses on play: post-structuralist analyses of children's play; 8. Lenses on play: cultural-historical conceptions of play; 9. Play in the curriculum; 10. Conceptual PlayWorlds: intentional teaching in play-based settings; 11. Planning for play development; 12. Assessment through, of and for play; 13. Being a play activist.