The wooden half moon pieces are like dice. They are thrown on the floor of the temple and their final position is "read" or interpreted for prophetic insight.
You may know more about this scene than I do, or you may have an amazing story revolving around a similar thing you saw. I'd love to hear it. Submit your story below, and if it's appropriate I'll post it here for all to read. For the benefit of a larger audience, please use English, even if it is not the best English.