This book introduces the migration patterns of monarch butterflies, describing the vast distances they cover, why they migrate, and the dangers they face along the way.

Introduces sperm whales, including their different body parts, how they travel in groups, what they eat, and how they care for their young.

Introduces the life and legacy of civil rights leader Dr. Martin Luther King, Jr.

Traces the life of a Jewish girl who chronicled her day-to-day life in a diary as she hid in an attic in Nazi-occupied Holland for two years.

"Nelson Mandela, who courageously dealt with adversity and emerged a world leader, has been an inspirational role model for millions of people around the world, from students to presidents. After being imprisoned for 27 years, in 1994 he became South Africa's first democratically-elected president and shared the Nobel Peace Prize. Mandela died in 2013, but his legacy lives on as a barrier-breaker and humanitarian. Learn all about his life, especially...

Provides information about the Earth's water, including rivers, lakes, oceans, the water cycle, climate, water pollution, and conservation.

En un mundo donde las temperaturas globales están cambiando de forma extrema tanto en la tierra y en el mar, las migraciones anuales de animales de todo tipo son historias de fuerza y voluntad increíble. Nuevas tecnologías nos permite seguir a estos animales y comprender mejor nuestro mundo que está en constante movimiento. Este texto relata el viaje de las ballenas por las aguas azules del profundo océano.

Este libro para niños en

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"Explore one of the most recognized figures in American history with this biography of Sacagawea. Kids will learn about her crucial role in the Lewis and Clark expedition and her influential legacy. The level 3 text provides accessible, yet wide-ranging, information for independent readers" --

Get ready for a walk on the wild side in this image-packed book all about bears! Kids will learn about different kinds of bears, where they live, and what they do. This level 3 reader is written in an easy-to-grasp style to encourage the animal lovers of today and scientists of tomorrow!

Aprende todo sobre los animales más mortales en este emocionante libro para niños. Está lleno de imágenes bellas e interesantes que les enseñan a los niños todo sobre estos animales asombrosos. Este libro de Nivel 3 es apropiado para los primeros pasos de lectura independiente o para una experiencia de lectura en voz alta, ¡perfecto para motivar a futuros científicos y exploradores!