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Who is Heavier?

8. Who is Heavier?

Gur (jaggery) and Groundnuts

Shabnam loved to eat jaggery (gur) and groundnuts.One day she bought 1 kg of jaggery and 1 kg of groundnuts.(You know that kilogram is also written as kg.)

  • Are the groundnuts really more than the jaggery (gur) in weight or do they just look more?

  • (1) 1 kg popcorn or 1 kg sugar?
    (2) 1 kg peas or 1 kg potatoes?
    Go to the market and check if your guess is right.

    Pumpkin Tomato 'Panga'

    This is the playground where tomatoes come to play every day. They love playing on the see-saw. One day a big pumpkin comes and sits on one side of the see-saw. When he does not get up for a long time, the tomatoes decide to sit on the other side and lift the pumpkin up so that he falls off.The little tomatoes start climbing on to the other side...1, 2, 3, 4, 5 ....... 25. Huh! The pumpkin is still sitting and laughing. So, the big tomatoes decide to help. The little ones get down

    and make way for the fat ones. 1, 2, 3, 4 ..... 20.
    Yeah! The pumpkin is up in the air. It shouts — Bring me down, bring me down please!

    'Panga' is a colloquial word which gives the sense of a problem or a quarrel. It has been used deliberately because children can find it amusing.

  • How many small tomatoes do you think could lift the pumpkin up?
    - Ten
    - Twenty
    - Forty

  • How many big mangoes can balance the pumpkin?

  • How many pumpkins can balance you on the see-saw?

  • Name some of your classmates who you think weigh

  • (a) Almost the same as you
    ___________________________________________________________________________________________________________
    (b) More than you
    ___________________________________________________________________________________________________________
    (c) Less than you
    ____________________________________________________________________________________________________________

  • How many books can you lift on one hand keeping your arm straight?

  • Double her Weight

    Kunjamma's parents have a different way of celebrating Independence Day because Kunjamma was born that day. They buy sweets double of Kunjamma's weight and distribute them among poor people.

    When Kunjamma was born, she was 3 kg. Today is Independence Day and Kunjamma is 5 years old. She is 28 kg now.

  • Now guess her weight and the amount of sweets her parents distribute every Independence Day.

  • Kunjamma's age

    Kunjamma's weight

    Amount of sweets

    At birth

    3 kg

    3+3=6kg

    1 years old

    9kg

    __________

    2 years old

    __________

    13+13=26kg

    3 years old

    17kg

    __________

    4 years old

    __________

    __________

    5 years old

    28kg

    __________

    You can ask your parents how much a 2-year old or 4-year old child could weigh.

    Yum-yum Rice

    Shugoto heard about a new dish on the radio. He wants to try making it. When he notes down how to make it, he gets confused.

    This is what he notes down —
    (1) Pour 2 spoons of water in the pot
    (2) Boil the water and add
        - 1 pinch of daal
        - half kg red chilli powder
        - 1 bowl salt

    (3) Now put a spoon of rice
    (4) Add 2 peas and 8 glasses of mustard seeds
    (5) Finally add 1 kg of onions

    Mix everything and boil for 15 minutes. But Shugoto feels there is something VERY wrong in the amounts of everything!!!

  • Help him match the things with their right amounts.

  • 1 kg rice
    half kg daal
    _______ peas
    _______ water
    _______ onions
    _______ salt
    _______ mustard seeds
    _______ red chilli powder
    ACTIVITY TIME
    • Make a list of things bought at your home. Find out how much of each thing is bought at one time. These things can be rice, oil, chilli powder, sugar, milk, onions, ginger, etc.

      Name of thing

      How much bought

       
       
       
       
       
       
       
       
       
       

    • Guess their weights and match.

      • Your school bag

      • Geometry box

      • A brick

      • A big pumpkin

      • Your pair of slippers/shoes

      Bring a balance and a 1 kg weight to class. Check if your guess was right.

    • Use your balance to find which of the following is heavier —

      i) A water bottle or a cricket ball
      ii) Your shoe or your pencil box
      iii) Your Maths book or Hindi book
      iv) Your bag or your friend's bag

    • Weigh 1 kg of mud or sand. Divide it equally into 2 bags. Use the balance to check if both the bags have equal weight.

    • Each bag of mud is your half-kg weight. Use it to weigh some other things around you.

      • Make a list of

        i) Things weighing less than half kg.

        ii) Things weighing more than half kg.

    Different activities will help children to guess and estimate weights of familiar things they see at home, at the grocery shop, etc. Guessing the weights of animals is an enjoyable exercise and helps them get a feel of larger weights. Teachers must bring a balance to class and give them a chance to weigh things themselves.

    Look for Weights and Balances


    Make a trip to your nearest junk dealer, vegetable shop and grocery shop. Have a look at the weights they use. Find out:

    i) Who uses the biggest weight?
    ii) Who uses the smallest weight?
    Have you seen any of these balances?

    In which shop would you find the following types of weights?
    Discuss with your friends.

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