If you remember the movie Big, with Tom Hanks, then you'll recall that it takes a child to tell you what's fun--particularly when it comes to toys and games. This book is about design and testing of software and other technology for children--whether it is toys, games, or educational products. The methods include children as design partners, and because of this and the products themselves, require a different set of methods and tools to get the job done. This book is a complete short course on how to do that: what is different about designing for children and how to do it: with principles and rules, guidelines and tips, and lots of case studies and quizzes to help get a thorough understanding. An invaluable tool for a designer or usability professional entering the world of chilren's products, as well as a good set of tools for the experienced children's designer.