Page 104 - Demo

104 Arrow-Puffin-1_Semester-2 Mathshandspan cubitpacefootspanWe use a tape to measure something long. See how a tailor measures length with a tape.A rulerA tape0cm 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15Carpenters use a tape to find out the length of things. They also use it to see the height of things.We measure length in metres and centimetres.Standard Units of LengthThe standard units of length is used to measure the correct length. We use a ruler and tape to measure length.MEASURING LENGTHThe length of an object tells us how long it is.Let's Understand Conceptual UnderstandingA ruler helps us draw lines of short length.Non-Standard Units of LengthIn the past people used different ways to measure lengths. They are nonstandard units of measurement.