Barcodes Barcodes When you checkout from a supermarket, the person at the counter checks all that you have bought by flashing a small light at a set of lines marked somewhere on every item. How does this system of checking work? A barcode is machine-readable information. It allows data to be collected accurately and rapidly […]
Category: Kids Learning
History of Glass
History of Glass Although known to man for ages, glass is a transparent beauty that fascinates us even today. How did man discover the process of making glass? How is glass shaped? Have you ever wondered where glass comes from? Today, all the glass we see around us is manufactured in factories. We take glass […]
History of Salt
History of Salt For most of us today salt is just another condiment. But historically, the innocuous looking white granular substance we know today as “salt” has been essential to life in many ways. Chemically, salt is a mineral called “Sodium Chloride” (NaCl). Commonly called edible salt, table salt or just salt, it is one […]
History of Chocolate
Chocolate through the years The story of chocolate began with the discovery of America. Till 1492, world knew nothing at all about the delicious and stimulating flavour that has today become the favourite of millions. You guessed it; we are talking about chocolates. Spain was the first to get the whiff of it. The court […]
Rain and Floods
Rain and Floods How does rain form? Water droplets form from warm air. As the warm air rises in the sky it cools. Water vapor (invisible water in the air) always exists in our air. Warm air holds quite a bit of water. For example, in the summer it is usually very humid. When enough […]
What does our tri-colour stand for?
What does our tri-colour stand for? Like our country, our national flag also has a history. Let us salute the flag. Our tri-colour flag was born on July 22, 1947 in the Constituent Assembly, a few days before the country gained Independence. Our flag has three stripes of equal width, the top being saffron (kesari), […]
The Postal System
The Postal System How does mail reach from one place to another? Have you ever thought how a letter travels thousands of miles before reaching its final destination? This journey covered by a letter is extremely fascinating .So read on to know more about the process through which we receive a letter sent to us. […]
The digestive process
The digestive process – what you eat and where it goes? Have you ever thought about how the meals you eat provide energy? It’s lunch break in school. You are sitting with your friends and enjoying the tiffin packed by your mom. A few idlis, chicken sandwiches or fruits – by the time you finish […]