This is a meter stick. It can also be called a yardstick. Let's estimate how many rulers make up a yard stick. Write student's suggestions on the board. Invite a student to come up an measure how many rulers make up a yardstick.
Lets play a game.
Miss Ihrke and I will choose an object in the room. You need to decide if we should use a ruler or a yard stick to measure with. Play the game for a few minutes. We sure learned a lot about measuring with rulers today. When introducing inches and centimeters, teachers will walk around the room to check for understanding.