Sink-Like-a-Stone Method: Instead of skimming the surface of a subject or interest, drop anchor there for a while. If someone is interested in chess, mess with chess. Not just the game, but the structure and history of tournaments. How do chess clocks work? What is the history of the names and shapes of the playing pieces? What other board games are also traditional and which are older than chess? If you're near a games shop or a fancy gift shop, wander by and look at different chess sets on display. It will be like a teeny chess museum. The interest will either increase or burn out—don't push it past the child's interest.
When someone understands the depth and breadth of one subject, he will know that any other subject has breadth and depth.
photo by Sandra Dodd
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