From the hand axe and mathematics to IC chips and the laser, 45 technological touchstones are described and illustrated. The story of each discovery or invention is an adventure and a mystery. The author presents the problem that needed solving, who the innovator was, how the solution was developed, and the impact of the invention. You will see how people of the past learned to use the materials around them to make their lives easier. And today, as technology has grown more complex, you will see people's curiosity and ingenuity making the stuff of science fiction come true. And young inventors will find a list of contests to enter and Web sites where they can discuss ideas.

 

 

This book is part of a book series called Inventions That Changed the World .

This book has been graded for interest at 9-14 years.

There are 112 pages in this book. This book was published in 2003 by Scholastic US .