We conducted an activity with our CBSE
8th graders, to deepen the concept of 'Direct and Inverse Proportion'. The
students were given a sheet of paper and asked to write two examples of direct
variation and two examples of indirect variation connected to real life.
All the students participated and gave
differentiated examples according to their knowledge and understanding level.
It was interesting to see that some of the examples were related to science (Ex:
Pressure is directly proportional to force; Pressure is inversely proportional
to area), some were very simple (Ex: For direct, When a balloon is
blown, the air in it increases with time; For inverse, When you eat something,
the quantity of food decreases as your stomach gets full) and some complex (Ex:
The speed of the wind is directly proportional to the number of rotations of a
windmill; For inverse, The more the friction, the less the movement).
This activity helped students in
relating the concept to real-life situations using different examples and made
it fun as everyone contributed in their own way.
Regards,
8th grade Math teachers (CBSE)
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