When I explained to my eight year old son that ancient peoples didn't have clocks like we do today, he was surprised. I don't think the thought had ever occurred to him that without batteries or electricity, the hands of a clock simply couldn't move. In Ancient Greece, they used a water clock to time short events. It was called a clepsydra (KLEP-sye-druh). I thought it would be fun to make our own version of these ancient clocks. What You Need masking tape fine-tip permanent marker two of…