Time for a trip back in time! This informative title takes readers on a journey centuries in the past, when the ancient Aztecs thrived. Readers will be hooked by the narrative opening. Then they will dive deep into the past, exploring the daily lives and innovations of the Aztecs. A cause and effect feature, a time and place matrix, profiles, and a timeline offer additional knowledge. Readers will soon understand what the ancient Aztecs contributed...

Many consider Thomas Edison the inventor of the light bulb, but this world-changing invention has a long history. Since the 19th century, many have worked to create and improve the light bulb. Starting from the light bulb's early development all the way up to its modern uses, this informative title will fascinate anyone who wants to know about the invention that lights up the world!

Not even a century ago, a computer took up an entire room. Today, a computer can fit inside your pocket! Over decades of technological advancement, the personal computer has shaped the world in ways that are still being determined. This powerful invention has changed everything from the way people communicate to how we entertain ourselves. With a series of fun facts, profiles, and a timeline, this title will fascinate anyone who has ever booted up....

The 20th century approaches, and life is about to change forever! Inventors across the world race to invent and innovate automobile designs. Which ones will end up on top? Anyone who has ever ridden in a car will appreciate this fascinating title about how the automobile got its start. Fun facts, a timeline, and inventor and automobile profiles show the importance of this amazing invention!

Reports of Bigfoot go back to the early 1800s. Since then, several footprints, films, and pictures have been used as evidence that Sasquatch roams the Pacific Northwest. This title examines the history of Bigfoot reports, the tools and technology used by researchers, and considers whether or not Bigfoot exists.

Creaking doors, gusts of wind, eerie sounds--could these be the signs of ghosts? Ghost hunters have tried for years to prove the existence of ghosts through photos, videos, and sound recordings. This book investigates reports of ghosts, illuminates the tools and technology used to search for ghosts, and leaves the reader wondering whether or not there are spirits among us!

The Rising Cost of Education covers the skyrocketing tuition fees for higher education, explaining just how expensive tuition is as well as what causes its increase and the risks it poses for Americans. Aligned to Common Core Standards and correlated to state standards.

The oldest paintings in the Cave of Altamira are more than 20,000 years old! Created by early humans, the paintings now give scientists a glimpse into the lives of people long ago. This high-interest title dives into the story of the cave, from its early inhabitants to its modern visitors. Maps, graphs, and profiles of new discoveries help paint a clear picture of the ancient cave and its many secrets.

Signs of life are everywhere in the Roman city of Pompeii. Graffiti decorates the walls. Ancient homes and restaurants still stand. Colorful frescoes and mosaics are still visible. But this city is a graveyard. More than 2,000 years ago, Mount Vesuvius rained fire and ash onto the city. Many who died there were perfectly preserved in ash, only to be discovered centuries later. This high-interest title uses maps, graphs, and profiles of important discoveries...

A group of tourists crowds into a dusty room with brightly painted walls. They have entered King Tut's tomb! Priceless artifacts once filled every chamber of the tomb. Now they are in museums across the world, carrying on King Tut's legacy thousands of years after his death! This high-interest title uses vivid photographs, timelines, graphs, and profiles of important discoveries to introduce readers to the fascinating world of this ancient Egyptian...