Dinosaurios, colas y corazas

Explains the idea of taking turns and emphasizes how important taking turns is to being fair and being a good friend.

Beginning readers will be captivated by the creatures they meet in this Spanish translation of Prehistoric Creatures. The simple text describes ancient animals that swam the seas, soared through the skies, and roamed the Earth long before people existed. Each book describes a group of dinosaurs that shared one or two fascinating features. Dazzling illustrations help bring these amazing creatures to life!

Computer science is all around us, at school, at home, and in the community. This book gives readers the essential tools they need to understand the computer science concept of testing. Brilliant color photographs and accessible text will engage readers and allow them to connect deeply with the concept. The computer science topic is paired with an age-appropriate curricular topic to deepen readers’ learning experience and show how testing works in the real world. In this book, a narrator freezes water to make ice and makes sure his process worked. This nonfiction title is paired with the...

Introduce students to civil rights leader and U.S. Supreme Court Justice Thurgood Marshall. With this Spanish-translated biography, readers will learn about Marshall's inspiring life and contributions. Engaging, primary source images and supporting text work together to help readers better understand the social studies content. Informational text features help students navigate the text.

A partir de temáticas diferentes pero profundamente conectadas entre sí, los siete ensayos que componen este libro tienen en común un interés básico: «la situación del hombre en el mundo» en estos inicios del siglo XXI. En ninguno de ellos nos referimos directamente a la crítica situación seguramente, prebélica de la hora presente. Sin embargo, las alusiones, las referencias indirectas y las evocaciones históricas permiten una reconstrucción de las etapas del camino que ha seguido y que todavía sigue nuestra cultura hasta llegar a ese estado de cosas. Hemos titulado a este...

What causes sound? How does sound travel? Sound begins when matter vibrates. Without this vibration sound could not move and nothing would make any noise. Starting with tiny molecules, this book explains the main concepts of sound and furthers understanding through a series of easy-to-do experiments that will appeal to readers of all ages.