Trinity College, in partnership with the Hartford Public School System, the Connecticut Chapter of the Computer Science Teachers Association, and other Hartford area high schools, will train approximately 30 Connecticut high school teachers to teach computing courses in Connecticut high schools that currently do not teach computer science. The course will be based on a mobile Computer Science Principles curriculum, Mobile CSP, which uses the new mobile computing language, App Inventor for Android, to provide a rigorous, programming-based introduction to computational thinking.