El sistema óseo (The Skeletal System)

Tornadoes are some of the strongest storms on the planet. It’s not safe to go near them, but what if we could? Readers will dive into the world of wild weather in a special ship that lets them get up close and personal with a tornado. From the cone of silence deep inside the storm to the incredible winds and lightning created by a superstorm, this book will electrify readers as well as educate them on what to do if a tornado forms nearby.

Introducción, traducción y notas de J. L. Calvo Martínez y M. a D. Sánchez Romero. Revisada por A. Pérez Jiménez.

The inspiring and timely story of Sonia Sotomayor, who rose up from a childhood of poverty and prejudice to become the first Latino to be nominated to the US Supreme Court. Before Supreme Court Justice Sonia Sotomayor took her seat in our nation's highest court, she was just a little girl in the South Bronx. Justice Sotomayor didn't have a lot growing up, but she had what she needed -- her mother's love, a will to learn, and her own determination. With bravery she became the person she wanted to be. With hard work she succeeded. With little sunlight and only a modest plot from which to grow,...

Defines levers, explains their functions, and suggests simple experiments to demonstrate how they work.