50 Things You Should Know About Inventions

In the ancient world, philosopher Archimedes designed new machines for farming. During the Renaissance, artist Leonardo da Vinci sketched his ideas for wondrous flying machines. Scientist James Watt provided ideas that would power the Industrial Revolution, while American inventor Thomas Edison patented more than 1000 inventions that would shape modern life, including the movie camera and the electric light bulb. Today's inventors still explore ideas for new and clever technology, producing miniature machines that we can only see under a microscope. Step inside the world of invention and see where it might take us next . . .

Based on the series produced for the BBC World Service Who thought up paper money? How did the contraceptive pill change the face of the legal profession? Why was the horse collar as important for human progress as the steam engine? How did the humble spreadsheet turn the world of finance upside-down? The world economy defies comprehension. A continuously-changing system of immense complexity, it offers over ten billion distinct products and services, doubles in size every fifteen years, and links almost every one of the planet's seven billion people. It delivers astonishing luxury to hundreds of millions. It also leaves hundreds of millions behind, puts tremendous strains on the ecosystem, and has an alarming habit of stalling. Nobody is in charge of it. Indeed, no individual understands more than a fraction of what's going on. How can we make sense of this bewildering system on which our lives depend? From the tally-stick to Bitcoin, the canal lock to the jumbo jet, each invention in Tim Harford's fascinating new book has its own curious, surprising and memorable story, a vignette against a grand backdrop. Step by step, readers will start to understand where we are, how we got here, and where we might be going next. Hidden connections will be laid bare: how the barcode undermined family corner shops; why the gramophone widened inequality; how barbed wire shaped America. We'll meet the characters who developed some of these inventions, profited from them, or were ruined by them. We'll trace the economic principles that help to explain their transformative effects. And we'll ask what lessons we can learn to make wise use of future inventions, in a world where the pace of innovation will only accelerate.

Expand your knowledge about America's experience as a new nation with 50 flash cards that present figures and features of the period. Test your knowledge or challenge a friend with 150 ready-made questions on topics from the failed Articles of Confederation and the successful Constitution to the nation?s early internal and external conflicts, including the War of 1812. Flip the card over to find the answers and more fascinating facts. Every deck in the series is great for learning, review, trivia, and more!

Boost civic literacy with an intriguing look at the United States government. In this deck, students will learn and review how the legislative branch works and who makes it work. Topics include the chambers of Congress, their leaders and powers, types of committees and sessions, and more. Each card also provides questions for review and trivia games, giving you a total of 150 ready-made questions. Countless fun and educational possibilities will have you returning to these cards again and again!

In an ever-changing world, good manners never go out of style. These essential skills and tips will help you all aspects as you grow into womanhood. Good manners are not just a quaint and old-fashioned concept. They’re an essential aspect of every young lady’s path to adulthood. It’s safe to say that today’s young woman is exposed to more opportunities than any generation of women in history, and these essential guidelines created by author Kay West will help parents ensure that their daughters grow up to succeed in any situation. In 50 Things Every Young Lady Should Know, you will learn about: Making conversation with adults Accepting a gift you don't like Dressing appropriately Winning and losing graciously Writing a thank-you note While the formal rules of etiquette are not taught the way they once were, 50 Things Every Young Lady Should Know provides a modern take on the ageless idea that girls should know appropriate and courteous responses to any given situation. This updated guide to traditional standards of behavior proves that manners never go out of style--they’re a crucial skillset that a young girl needs to excel in whatever she chooses to do.

Describes how a wide variety of things such as nursery rhymes, the national anthem, anesthesia, cellophane, raisins and dynamite came into being