The best way to understand Agriculture is to actually get into it. I suggest school children to start doing it at school and repeat it at home. The produce can be sold or distributed at carnivals or amongst family and friends. This has the additional benefit of teaching and experiencing Accounting and Marketing . I am a strong advocate for Carnivals at schools as both educational and providing experience in a cooperative milieu. Getting involved in a Caenival is an educative experience and often teaches children initiative, leadership, accounting and marketing. Amongst many other things. Though these maybe at a basic level, they are enough to set a spark and lead the child to think at a long term and possible future career. It also helps the child bring out hidden talents. A point about learning about Agriculture is to empathize with farmers and better understand empathy too.