Here are a few links to interesting materials about design thinking (lectures, presentations, videos, ebooks, articles, etc.):
Definition of design thinking:
http://en.wikipedia.org/wiki/Design_thinking
Tim Brown's presentations about design thinking at TED:
http://youtu.be/UAinLaT42xY (Tim Brown urges designers to think big)
http://youtu.be/RjwUn-aA0VY (The powerful link between creativity and play)
How IDEO works:
http://youtu.be/JkHOxyafGpE
Design thinking toolkit for NGOs:
http://www.ideo.com/work/human-centered-design-toolkit
Design thinking toolkit for educators:
http://www.designthinkingforeducators.com/
Short presentation about disruptive thinking:
http://youtu.be/Um8klv5rX4U
Frameworks for design thinking:
http://youtu.be/cWBctTjuZkI
Bootcamp Bootleg manual with a lot of useful design thinking methods:
http://dschool.stanford.edu/wp-content/uploads/2011/03/BootcampBootleg2010v2SLIM.pdf
Set, Ready, Design! - short design thinking exercise for everyone:
http://youtu.be/jIXSuZg2awA
