Explains what a telegraph is and the different types there are, including smoke signals, semaphore, and Morse code.

This book introduces readers to the developing technology of smartphones, including a wide range of familiar examples and a look at the technology's future. Vivid photographs and easy-to-read text aid comprehension for early readers. Features include a table of contents, an infographic, fun facts, Making Connections questions, a glossary, and an index. QR Codes in the book give readers access to book-specific resources to further their learning. --Amazon...

A comprehensive overview and time line of human history. MacLeod and Wishinsky provide a one-stop source for all the great events, people, and inventions that changed history, from the discovery of fire to the revolutions in the Arab world that are making headlines today.

Cleverly shows how Leonardo's ideas foreshadowed modern inventions. At once an artist, inventor, engineer, and scientist, Leonardo da Vinci wrote and drew detailed descriptions of what would later become hang gliders, automobiles, robots, and much more.

"An introduction to inventions and discoveries from ancient to modern times, including how they were developed and their effects on society. Features include fact boxes, illustrations, period photographs, a timeline, a glossary, and a list of recommended books and websites"--Provided by publisher.

Reveals predictions made in "Popular Mechanics" magazine between 1903 and 1969 about what the future would hold! "Surrounded by wonders and a fast-evolving culture of innovation, it's just as challenging today for us to imagine the next century as it must have been for our early 20th century colleagues to envision the fabled year 2000."-- P. 6.

Lewis Latimer was one of the greatest inventors of his time. He was also an engineer who transformed the lightbulb at Thomas Edison's company. And he was a gifted artist, too. Includes fun facts, like who invented the Super Soaker.

From the way we send messages to the way we travel, technology is constantly changing. Then & Now provides a look at how everyday machines like cars and phones have evolved over the last century.