Don Brown

Award-winning author Don Brown explores computers and technology in this installment of the Big Ideas That Changed the World series

Machines That Think! explores machines from ancient history to today that perform a multitude of tasks, from making mind-numbing calculations to working on assembly lines to guiding spaceships to the moon. Machines That Think! includes fascinating looks at the world's earliest calculators,...

Presents an illustrated account of bookseller Henry Knox's heroic contributions during the Revolutionary War, describing how he dragged fifty-nine cannons to Boston across 225 miles filled with danger and hardship.

As a young boy, Theodore "Teedie" Roosevelt was small, had weak eyes, and frail muscles. But Teedie was also inquisitive, brave, and self-sufficient. Determined to overcome his childhood ailments, Teedie changed from a timid homebody into an adventurous man. He explored the Wild West, fought in the Spanish-American War, served as president of the United States, and helped build the Panama Canal.

"From phones to lightbulbs to electric cars, electricity is something we can't live without! Breaking down concepts like atoms, current, and magnetism, acclaimed author-illustrator Don Brown demonstrates how our world became connected by electricity. Brown highlights key inventors and scientific breakthroughs, including Benjamin Franklin's famous experiment using a kite as a lightning rod (don't try it at home!), the dramatic rivalry behind the creation...