Every day is about learning a new concept so today was osmosis.
Our household is as good as a real lab sans many chemical components.
We started with common things done at every household.
Daily we soak pulses for making daal. The daal seeds swell up as water content rises in it.
That’s osmosis.
Question to ask : Can you guess how the Daal swelled up?
yep, it absorbed the water.
Question : Why did it absorb water?
because it had no water in the beginning.
(CAUTION: Don’t get tempted to introduce hypertonic, hypotonic concepts now)
Now take some raisins and two small transparent cups partially filled with water. Add sugar to one glass and mix it well so that you get concentrated sugar syrup.
Put 2-3 raisins in each glass.
Observe after one hour.
Now pick the raisins and change their container.
Let it be there for another hour .. see what happens.
Instead of going through text in books , it is far better to do these simple practicals at home. This way concept stays with the child and they will be able to visualize application of science in daily life.
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