Each player receives three index cards. On the cards, record a length. One length must be in meters, one in centimeters, and one in millimeters. Be sure to label the units for each measurement (for example, 3 millimeters or 16 centimeters). Now, shuffle all the cards together and deal 3 cards to each player.

Look at the three cards that you were dealt. Use your tape measure or meterstick to find an object that measures the length on each of the cards. Write the name of each object on the card with its measurement. The winner is the first player to find the measurements on all three of his or her cards.