Explores the fascinating world of valleys. Readers will learn how valleys form and how they change over time, as well as the plants and animals that make valleys their home. Featuring vivid photographs, fun facts, focus questions, and resources for further research, this book is sure to support earth science education.

Introduces readers to the roles of butterflies in world ecosystems, as well as threats to butterfly populations and conservation efforts. Eye-catching infographics, clear text, and a "That's Amazing!" feature make this book an engaging exploration of the importance of butterflies.

Introduces readers to the roles of butterflies in world ecosystems, as well as threats to butterfly populations and conservation efforts. Eye-catching infographics, clear text, and a "That's Amazing!" feature make this book an engaging exploration of the importance of butterflies.

Explores the fascinating world of valleys. Readers will learn how valleys form and how they change over time, as well as the plants and animals that make valleys their home. Featuring vivid photographs, fun facts, focus questions, and resources for further research, this book is sure to support earth science education.

Provides a thorough overview of the major pros and cons of vaccines. Readable text, interesting sidebars, and illuminating infographics invite readers to jump in and join the debate.

Provides readers with an engaging introduction to light. With colorful spreads, clear text, helpful diagrams, and a "Science in Action" activity, this book offers an exciting look at physics in the real world.

Provides readers with an engaging introduction to light. With colorful spreads, clear text, helpful diagrams, and a "Science in Action" activity, this book offers an exciting look at physics in the real world.

Provides a thorough overview of the major pros and cons of vaccines. Readable text, interesting sidebars, and illuminating infographics invite readers to jump in and join the debate.