Beyond computer literacy: supporting youth's positive development through technology / Marina Umaschi Bers -- Educational technology, reimagined / Michael Eisenberg -- Children as codesigners of new technologies: valuing the imagination to transform what is possible / Allison Druin -- Content creation in virtual worlds to support adolescent identity development / Laura M. Beals -- Youth as content producers in a niche social network site / Christine Greenhow -- YouTube as a participatory culture / Clement Chau -- Making projects, making friends: online community as catalyst for interactive media creation / Karen Brennan, Andres Monroy-Hernandez, Mitchel Resnick -- Augmenting your own reality: student authoring of science-based augmented reality games / Eric Klopfer, Josh Sheldon -- Developing technological initiatives for youth participation and local community engagement / Leo Burd -- "MXing it up": how African adolescents may affect social change through mobile phone use / Christopher M. Napolitano -- El Silencio: a rural community of learners and media creators / Claudia Urrea