Objectives CCSS Math/Measurement & Data 1.MD.A.1: Order three objects by length; compare the lengths of two objects indirectly by using a third object. 1.MD.A.2: Express the length of an object as a whole number of length units, by laying multiple copies of a shorter object (the length unit) end to end; understand that the length measurement of an object is the number of same-size length units that span it with no gaps or overlaps. Limit to contexts where the object being measured is spanned by a whole number of length units with no gaps or overlaps. 2.MD.A.1: Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes. Materials Needed How Big Is a Foot? by Rolf Myller Area Tiles 12-inch ruler Measuring Bones template “How Many Bones Long?” record sheet “Big Fish” file folder game Introduction Read aloud How Big Is a Foot? by Rolf Myller. Point out that in the story, they measured “feet” to find out what size to make the bed for the queen. Explain that there is a difference between the length of one person’s foot and a foot-long standard unit of measurement. Hold up a 12-inch ruler and say, “In standard measurement, a foot is the same as 12 inches. Do you think your foot is longer or shorter than this ruler?” Invite a few students to compare their feet to the ruler so that they can see that the ruler is longer. Explain that unlike a foot in standard measurement, people’s feet are different sizes. This is why the king had trouble getting a bed that was the correct size for the queen. Finally, tell students that they are going to practice measuring things using nonstandard units of measurement.
