Science

So, imagine this — when summer vacations are ending and the rains start, our farmers plant rice or maize in the fields, right? But in winter, you'll see wheat or mustard in those same fields. Socho zara — why do you think we don't grow the same crops in every season? Do they need different things to grow well?

❌ Some kids think that manure and fertilizer are the same thing, or that they're used in the same way to help plants grow.

✅ Nope, not at all! Manure is an organic material made from cow dung and plant waste, which also improves soil health. Fertilizers, on the other hand, are factory-made chemicals that give specific nutrients but don't really help the soil structure much.

Here’s a fun thing you can try — take some chana (chickpea) seeds in two separate bowls at home. Fill one bowl with water and let the seeds soak, and leave the other bowl dry. After two or three days, what difference do you observe and why?

See interactive experiment in app →

When your mom sets curd from milk at home, have you ever wondered how that happens? — Just a tiny spoon of old curd mixed into warm milk can turn the whole thing into thick, delicious dahi overnight — this magic is all thanks to a tiny 'microorganism' called Lactobacillus. Isn't it amazing how something so small can do such a big job? — What do you think is present in that little bit of curd that makes the entire milk change?

❌ Oh, all these 'microorganisms' are just there to cause diseases! We should just stay away from them.

✅ No, not at all! The truth is, while some 'microorganisms' do cause diseases, many others are super important for us — like the ones that make curd, or help in creating compost. In fact, they are a huge and beneficial part of our lives! — Can you think of any 'microorganism' that acts like a friend to us?

Take a slice of bread and sprinkle a little water on it. Now, put it in an airtight container and keep it in a warm place for two to three days. Observe carefully what changes you see on it.

See interactive experiment in app →