Looks at how inventions changed lives and are improved over time.
Describes roles and levels of government, and rights and responsibilities of citizens.
Presents landforms, climate, and how people depend on and change Earth.
Considers the teamwork planning, equipment, and discoveries that are part of successful expeditions.
Looks at the architecture, culture, and technology of ancient civilizations.
Tells how the Aztecs created an empire, and explores the culture, architecture, and technology of their civilization.
Follows a guide as he journeys through the Grand Canyon and explains its history.
Follow the Nile River from its source in the heart of Africa to the Mediterranean.
Gives a first-person account of climbing the world's highest peak.
This text describes American symbols: the flag, the national anthem, the bald eagle, the Capitol, and the Statue of Liberty.
This book shows how the service of citizens, workers, and leaders makes strong communities.
This book teaches how to read time lines by showing inventions that have changed daily life.
This book tells the story of the race between Amundsen and Scott to reach the South Pole first.
This book explains why and how ancient Egyptians built the Great Pyramid at Giza, long before modern machines and tools.
This book shows how the bicycle has changed in design and purpose over the years.