Shows how natural forces cause constant changes to Earth's surface.
Considers the teamwork planning, equipment, and discoveries that are part of successful expeditions.
Looks at the architecture, culture, and technology of ancient civilizations.
Animals grow and change throughout their lives. Different kinds of animals grow and change in different ways. This text introduces the life cycles of various groups of animals and includes butterfly and frog metamorphosis.
Looks at how inventions changed lives and are improved over time.
Describes roles and levels of government, and rights and responsibilities of citizens.
Presents reasons to collect data and ways to compare data, including tables and graphs.
In this concept book, students read detailed explanations about the objects in our solar system, how they move, and the different ways we have found to observe them.
Shows and explains how adaptations help plants and animals survive in different habitats.
Presents landforms, climate, and how people depend on and change Earth.
Addition, subtraction, division and multiplication can be used to solve problems, large numbers can be used to represent large quantities
People develop and use machines to meet specific needs, they make work easier