Object: Rulers, 6 inch, with Golden Rule imprint

Good morning, boys and girls. Do you recognize what I have with me today? (Response.) Yes, it's something very common. You all probably have one in your desk at school or in your room at home. A ruler is a very useful object, isn't it? What are some of the things one might use it for? (Responses -- measure height, width, length, mark off a graph, help draw straight lines, and so forth.)

Yes, those are all good uses. I think one of the most important things about a ruler is that it sets a st…