Page 113 - Viva
P. 113

ACTIVITY-1

                  What To Do?
                  To estimate and measure the length of small objects using a metre long paper strip

                  What We Need?
                  Chart paper, glue stick, pencil, ruler, a pair of scissors and cardboard

                  How To Do?
                       •  Cut five strips of width 2 cm and length 20 cm from the chart paper.
                       •  Paste the strips one after the other on the cardboard to make one long strip. Cut
                        the cardboard along the edges of the strip.

                       •  Make markings 1 cm apart on the strip using a ruler. Your metre scale is ready.
                       •  Take a few items like a book, lunch box, duster, pencil, chalk, etc. Guess and write
                        the lengths of these objects.
                       •  Then measure the lengths of these items using your metre scale and record your
                        observations. Ignore the part of the object that cannot be completely measured
                        with the strip. See how close your guess was to the actual measurement.
                  Extension: You can also measure the length of your classroom, blackboard, table, etc.
                  and make a list of things which are more than 1 metre in length and those which are
                  less than 1 m in length.


               ACTIVITY-2

                  What To Do?
                  To measure the capacity of different containers using non-standard units

                  What We Need?

                  Bottles, cups, buckets, white sheet of paper and a pencil
                  How To Do?

                       •  Pour one cup of water into a bottle. Mark its position with a rubber     4 cups
                        band as shown.                                                             3 cups
                       •  Estimate and guess how many cups of water will fill the bottle.          2 cups

                       •  Now fill the bottle by using cups and find the actual number of           1 cup
                        cups  of water required to fill the bottle.
                        Actual number of cups = ________      Estimated number of cups = ________

                  Extension: Use the bottle to fill a bucket. Estimate how
                  many bottles of water will be needed to fill the bucket
                  by guessing? Check by finding the actual number of
                  bottles of water required to fill the bucket.

                  Estimated number of bottles = _________ bottles

                  Actual number of bottles = _________ bottles

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