Science is not a chapter to memorise — it is something that happens on your table. 48 experiments and builds, sorted by Std, each with what to do, what you will see, and why it happens.
After two days the shell has vanished and a bare, bouncy, see-through egg is sitting in the jar.
🧰 a raw egg, a glass jar, white vinegar to cover the egg…Try it → Science20 min
Let go of the balloon and it flies the whole length of the room along a string, like a tiny rocket.
🧰 a balloon, about five metres of smooth string, a drinking straw…Try it → Science20 min
Your finger sinks in slowly like honey, but a fast punch lands on it as if it were a solid floor.
🧰 two cups of cornflour, about one cup of water, a wide bowl…Try it → Science20 min
Cut the stalk open and you find coloured dots in a neat ring, the actual pipes the water travelled up.
🧰 a celery stalk with leaves, or a white flower, a glass of water, dark food colour…Try it → Science20 min
A dropped marble leaves a round crater with bright rays spraying out, exactly like the photographs of the Moon.
🧰 a deep tray of flour, a sieve and a spoon of cocoa or turmeric, marbles and small stones…Try it → Science20 min
A blank sheet of paper suddenly shows your secret message in a different colour when you brush juice across it.
🧰 one spoon of baking soda, one spoon of water, a cotton bud or thin brush…Try it → Technology15 min
A single drop of water turns a phone camera into a microscope that shows salt as tiny glass cubes.
🧰 an adult's phone with a camera, a small piece of clear plastic sheet, a drop of water on a straw tip…Try it → Technology20 min
Your friend follows your instructions exactly and walks straight into a chair, which is how you find your first bug.
🧰 paper cards with arrows drawn on them, chalk or tape to mark a grid of squares, an object to be the target…Try it → Engineering20 min
One sheet of paper that cannot hold five coins flat will hold a book once you fold it the right way.
🧰 several sheets of A4 paper, two equal stacks of books to be the supports, a pile of identical coins…Try it → Engineering20 min
The same square of foil carries three coins as a deep cup and thirty as a wide flat barge.
🧰 aluminium foil, a bowl of water, a pile of identical coins…Try it → Maths20 min
Your tally marks turn into a chart that tells the story of a whole room at a single glance.
🧰 paper, a pencil, a ruler…Try it → Maths15 min
Nobody in the class can fold their sheet eight times, no matter how big or thin the paper is.
🧰 several sheets of paper of different sizes, a long strip cut from a newspaper, a ruler…Try it →Ask Acharya Samayeshwar about any of these ideas — he explains them for your board and Std.
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