Collectibles: Tablet pieces aren't showing up in my game.

At the beginning of the game, only coral, turtle shells, and feathers will appear. Once your villagers begin work in a specific area of the village, the tablet pieces will begin appearing in your game. The tablet pieces are not like the other collectibles, and the goal is to complete the tablet. Once you have collected a particular tablet piece, that piece will no longer appear. Once you have completed the tablet, the tablet pieces will stop appearing.