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.
A phone's slow-motion mode becomes a laboratory timer accurate to a few thousandths of a second.
🧰 a phone that records slow motion, a measuring tape taped vertically to a wall, a small dense ball…Try it → Technology40 min
One bar chart of letter counts hands you your friend's secret key without a single guess at the message.
🧰 two strips of card to make a cipher wheel, paper and pencil, a passage of about 200 letters you have written yourself…Try it →Ask Acharya Samayeshwar about any of these ideas — he explains them for your board and Std.
Ask GuruAcharya Samayeshwar
