March 6, 2025
$ 0
This picture book explores every aspect of salt: The many ways it’s gathered from the earth and sea; how ancient emperors in China, Egypt, and Rome used it to keep their subjects happy; Why salt was key to the Age of Exploration; what salt meant to the American Revolution; And even how the search for salt eventually led to oil.
This picture book explores every aspect of salt: The many ways it’s gathered from the earth and sea; how ancient emperors in China, Egypt, and Rome used it to keep their subjects happy; Why salt was key to the Age of Exploration; what salt meant to the American Revolution; And even how the search for salt eventually led to oil. Along the way, you’ll meet a Celtic miner frozen in salt, learn how to make ketchup, and even experience salt’s finest hour: Gandhi’s famous Salt March.
Why aren’t left-handers extinct?
What makes a rainbow round?
How is a pancreas . . . like a pendulum?
These may not look like math questions, but they are―because they all have to do with patterns. And mathematics, at heart, is the study of patterns.
Here are twenty-six bite-size chapters on the hidden mathematical marvels that encrypt our email, enchant our senses, and even keep us alive―from the sine waves we hear as “music” to the mysterious golden ratio.
January 1, 2001, will mark the beginning of a new thousand-year period on earth. But our earth is more than four billion years old, and humans have lived on our planet for perhaps two hundred thousand years. So how can it be the year 2000? The answer is that it is the year 2000 only on the Gregorian calendar. On the Hebrew calendar, the year will be 5760. On the Muslim calendar, the year will be 1420. And on the Chinese calendar, it will be 4698. So what year is it really? It all depends on what calendar you use and when you started counting the years.
Explore the mysteries of mathematics through quotations, as the adventure unfolds over 1000s of years.
This gem of an author “inspires a new generation of da Vincis to build unknown flying machines and create new Mona Lisas.” — Christian Science Monitor
In addition to exploring such engaging topics as dark energy, parallel universes, the Doppler effect, the God particle, and Maxwells demon, the books timeline extends back billions of years to the hypothetical Big Bang and forward trillions of years to a time of “quantum resurrection.” Like the previous titles in this series, this Book helps readers gain an understanding of major concepts without getting bogged down in complex details.
Leave a Reply