As The Dish mentioned in a post on Monday, the John Lennon Educational Tour Bus rolled into campus over the weekend. Stanford computer science majors joined John Lennon staff on board to help a group of local middle and high school students design and build an iPad app in 48 hours. The teenagers came up with a farming game to promote understanding of agriculture in developing countries. Players have to allocate resources among technology, crop improvement and debt payments to increase the health of the people in their virtual village. STEVE FYFFE, videographer for the Stanford News Service, captured the action.