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               \ 04-Oct-2025  Bharat Arora   Proof-9                                    Reader’s Sign _______________________ Date __________





              3.  Count and find the heights of these objects.
                   (a)                    (b)                   (c)                          (d)

















                              crayons               crayons                       crayons                   crayons

                     l Which is the tallest among the objects above?                            ______________
                     l Which is the shortest among the objects above?                           ______________

              Comparing WEigHTs


              We use the words ‘heavy’ and ‘light’ to compare the weights of objects. We can
              compare the weights of some objects by just observing them. Look at the following.











                  A pencil box is lighter          A crayon is lighter than a          A car is heavier than a

                    than a school bag.                    water bottle.                         bicycle.


                      Think Tank                                                                   Experiential Learning  Logical Thinking

                     1. Are smaller objects always lighter than bigger objects?
                     2. Take a banana in one hand and an orange in the other. Can you say which one is lighter?
              a Balance or scale


              When we are unable to say which item is heavier or lighter just by
              looking at them, we use a balance or scale to compare weights. A
              balance has two pans.

              Look at the balance given here. There is a watermelon on one pan
              and a papaya on the other. The pan with the watermelon goes
              down. The pan with the papaya goes up.

              Thus, the watermelon is heavier than the papaya or the papaya is lighter than the
              watermelon.




              Mathematics-1                                                                                         143
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