This work selects the most accessible papers on this subject from 20 years of writing by the author on psychology, education, computing, and artificial intelligence. The book may be used as an introduction to educational computing, highlighting primary themes in the use of technology to support education. The author's studies have focused on young children of elementary school age. The book considers 20 years of computerization in schools along with a view of computing experience and cognitive development. It is more about people learning than computing, with a defined focus on the psychology of this. The text is complemented by a more extensive database, on disk and in Microsoft Word, of papers collected and prepared by the author. A more extensive collection of papers is also available on disk with each copy of the book for those who wish to go further into the issues.