Serpientes y escaleras

The need for speed is the motivating factor in this engaging, Spanish book. Readers learn the history of travel from the very slow to the supersonic and beyond, including everything in between. They learn and discover the factors that influence motion for all types of vehicles: land, air, and water alike. They also learn different ways to measure speed and read about energy uses for different vehicles. With greater speed comes greater risk. Readers learn how engineers are always seeking new and better ways to keep people safe as they travel faster and go farther. This 6-Pack includes six...

Have you ever looked up at the night sky and been fascinated by the scattered twinkling lights? You are not alone! People have been captivated by the stars for thousands of years. Learn all about stars with this Spanish science reader that brings the power of science and informational text to students at a level they can understand. This nonfiction book introduces students to STEM topics and new concepts and vocabulary terms like black hole, nebulae, luminosity, supergiant, and supernova. With detailed images and fascinating sidebars, the leveled text supports students reading at above-,...

Esto más que un libro es una puerta que, al abrirla, mis sentimientos y reflexiones te dan la bienvenida a mi vida. Te muestran como soy y en lo que me he convertido. Las páginas de este libro, llevan plasmadas todo el dolor que me abrasa por dentro y el agua que caía de mis ojos mientras escribía.

A human hand is found in the zoo's elephant enclosure. The rest of the teacher and ardent environmentalist turns up on the lawn. Although admired by his students, nearly everyone else seems to have a reason to want him dead.