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Children's Knowledge Bank (4 + 1) Rs.780/-
Children's Knowledge 4 Books Set + 1 DVD FREE
Fully Illustrated in COLOUR with 900+ Hows, Whys, What & Wheres
4 Books + 5th with FREE Audio-Video DVD worth Rs.135/-
Publisher: Pustak Mahal Language: English Author: Team of Experts ISBN: 978-81-223-1354-3 Edition: 2012 Price: Rs. 780/- (816 Pages + FREE Audio-Video DVD with 5th Part)
Children have an inquisitive mind. They are curious about everything they come across, and almost never hesitate to move into uncharted territories. They’re like young explorers riding the waves of curiosity. Children’s Knowledge Bank is an effort towards encouraging and nurturing the minds of these curious creatures.
By reading this book, children learn answers to interesting questions such as how spectacles help in clear vision, where was the potter’s wheel invented, and how is it that FM transmission provides excellent reception.
These are everyday things that children come across. They regularly see people on the street wearing spectacles. Perhaps they listen to songs being played on the FM radio, and may have seen their mothers carrying earthen pots on their hips.
Don’t such things stoke children’s imagination? The book consists of four independent volumes, each divided into separate units. Each of these books is compiled with the help of experts, and is thus a credible collection of facts and general knowledge. It’s written in a manner that strikes a chord with the kids.
Children's Knowledge book consists of 5 independent volumes, each divided into separate units. Each of these books is compiled with the help of experts, and is thus a credible collection of facts and general knowledge. It’s written in a manner that strikes a chord with the kids.
Some of the chapters that make up these four volumes include General Knowledge, Medicine, Science and Technology, Earth Science, Transport, The Universe, Human Body, and Plants and Animals, Famous People, and Discoveries.
There are over 800 illustrations in the book, and they’re all in color + 5th Part FREE with DVD worth Rs.135/-.
AN EXCERPT FROM THE BOOK
Where was the potter's wheel invented?
The potter's wheel has always fascinated people. Many children have not seen a potter working. Do you know how these wheels were invented and where? In the beginning, the pots were shaped by hand out of wet clay. Turning the raw lumps of earth on a wheel was developed later.
The potter's wheel was invented in Sumeria, Babylon and also elsewhere in The Near East around 3000 BC. Clay pots had already been made for over 5000 years, but they were crude and broke easily.
Making pottery items on a potter's wheel is a craft that requires a lot of skill. The potter needs skill not only in spinning the wheel and shaping the pot with his hands, but also in firing the pot in a kiln to harden it. Potters also learned how to glaze (coat) pots with various substances to make the pots stronger and more decorative and beautiful.
The invention of the potter's wheel led to one of the first industries in the world - pottery. In earlier days, a skilful potter could make enough pots to exchange them for food and other goods, or sell them for money. Nowadays, potters make pots from clay to sell them in exchange for money. Pots now come in various shapes and sizes and patterns. Some examples of pottery have been recovered from the ruined cities of Pompeii and Herculaneum that were buried under volcanic ash when the volcano Vesuvius (near Naples, Italy) erupted in 79 AD. Examples of amphorae (big pottery jars) containing remnants of what was once wine, have been salvaged from ancient sunken ships discovered at the bottom of the Aegean Sea. Pottery shards and even some intact examples of pottery have been found at almost all archaeological sites the world over. This proves that knowledge of pottery extended to much of the ancient world.
How do spectacles help in clear vision?
We often come across people wearing spectacles. Wherever we go, it is possible to spot a person with spectacles within a moment. Anyone with weak eyesight uses spectacles. These days, there are spectacles available which help in viewing both near and far objects. Nowadays, lenses that fit externally over the cornea of the eyes are often used in place of spectacles. These are known as 'contact lenses'. These lenses can be of different colours and are used by those who do not want to wear spectacles, especially the youngsters.
The use of spectacles started over 700 years ago. In 1266, Roger Bacon of England used a piece of glass to magnify the words written in a book. This glass piece was cut out of a spherical ball of glass. Salvino D'Armate of Italy is credited with inventing the first wearable eyeglasses, around 1284.
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