Object: a road worker's hard hat and a road work ahead sign
(Put on the hard hat and set up the sign.)
Good morning, boys and girls. I wore a special hat this morning. Have you seen any signs like this one before? (Wait for show of hands.) Can anyone read this sign? (Choose someone to read it.) That's right, it says "road work ahead". This is the kind of hat a road worker would wear. Making roads is hard work. Have you seen all the big machines that road workers use? Can you name some of them? (Let them try to list the machines road workers use. They might name machines like the following: crane, grader, roller.) There are a lot of machines used and not just anyone can use the machines. If you were going to drive one of the big machines, you would …