Las selvas (Forests)

Oceans cover 70 percent of the Earth's surface, providing students with a variety of plant and animal life to learn about. An ocean biome includes the saltwater below the waves and everything on, above, and near the surface. Students will also learn about the beach, tides, cliffs, bays, coastlines, coral reefs, and tide pools in this Spanish-translated title.

Celebrating the life, growth, and development of baby animals, Starting Out narrates the tale of growing up in the wild. This series--now in Spanish as well as English--employs simple language and a unique first-person perspective to introduce foundational biological concepts as it follows the adorable animal through the start of its young life. The straightforward text and large photos of the animal in its natural environment will both entertain and enlighten as readers learn how the animal's physical features, diet, habitat, and familial relationships play a role in its growth and...

In 1846, travelers heading for California became trapped high in the mountains of the Sierra Nevada. Snowdrifts surrounded their shelters, and food supplies dwindled. How they stayed alive remains one of the most gruesome stories in US history. However, some facts that have come to light recently through archaeological digs will surprise even those who think they know the story. This gripping book, including maps and images of the era, tells the true account of the doomed Donner party.

Este libro ilustrado para niños contiene juegos con dados, cartas, matemáticas y otras cosas para revelar los poderes mentales que poseen los lectores.

Técnico electricista 2 - Curso visual y práctico Corriente continua Conoceremos en detalle la caída de potencial y describiremos las características de los nodos, ramas y mallas, dentro de un circuito eléctrico. Enunciaremos las leyes relacionadas con la tensión y la corriente y, posteriormente, nos daremos a la tarea de aplicarlas en la realización de diversos tipos de conexiones, por ejemplo: la conexión de resistencias en serie, la conexión de resistencias en paralelo y también la conexión de capacitores. Para continuar, conoceremos el teorema de superposición y realizaremos un ...