La sonrisa de la hiena

Junípero Serra was an influential Franciscan missionary who created missions that stretched from San Francisco to San Diego. His impact on California is still felt-and debated-today. Introduce students to his life with this nonfiction biography that builds students' reading skills and promotes social studies content literacy. The dynamic primary source maps, letters, and images provide authentic nonfiction reading materials and keep students interested in learning. Text features include a glossary, index, captions, sidebars, and table of contents. This book connects to California state...

For ages, the idea of machines that think and act on their own has gripped scientists, thinkers, and the general public. This book explores the history of artificial intelligence (A.I.), and how science fiction is quickly becoming science fact. It examines the technologies involved in A.I. and its inevitable effects on work, life, health, and many other aspects of human society. Rooted in history and science, this book provides an inside look at a topic that captivates engineers, scientists, and dreamers, but also raises important ethical issues and challenges how we see ourselves and our...

In this fascinating, Spanish-translated nonfiction title, elementary readers are invited to discover terrifying plants and animals of the tropics. Readers will discover what makes poisonous plants so harmful and why dangerous jungle animals are so deadly through engaging features, including bright images, diagrams, and charts, informational text, and captivating facts.

MATEMOLA es una colección de seis cuadernos orientados a crear una base sólida para el desarrollo del pensamiento lógico-matemático. Las actividades del libro están pensadas para ayudar a los niños a interpretar la realidad y conocerla a través de la observación y la representación. Al final del cuaderno se propone un juego individual de memoria y atención para repasar algunos de los principales contenidos trabajados. Los cuadernos incluyen pegatinas para realizar las actividades de una forma amena y afianzar los conocimientos. Trabaja conceptos de numeración (números 1 al 9...