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P. 61

B. Let’s Perform an Activity
     Make your own fountain.
     Take a bottle with a narrow neck and fill it with water. Add few drops of ink (red or blue) and fit
      a rubber stopper having two holes as shown in the figure. Introduce two glass tubes (one
      bent and other straight) as shown here:
     Now blow through the bent tube. You can see the water with coloured ink coming out
      through the straight one.

C. Let’s make a chart
     Make a chart on saving water and show in the class.

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