Los asteroides y los cometas (Asteroids and Comets) 6-Pack

How does a liquid become a gas? Through evaporation! Evaporation helps make puddles disappear after it rains. In this Spanish-translated book, learn all about evaporation and how it happens. This 6-Pack includes six copies of this title and a lesson plan.

There is a bright light in the night sky. Sometimes it is round like a ball, sometimes it is a crescent, and sometimes it is not there at all! What is this strange and changing thing? It is the moon, of course! Read all about our moon and the moons surrounding other planets in this Spanish-translated book. This 6-Pack includes six copies of this title and a lesson plan.

Many desert animals around the world are in danger of becoming extinct. In this enlightening, Spanish-translated nonfiction title, readers will learn a few of the causes of extinction in the desert and what problems extinction causes for animals, wildlife, and humans alike. Through vibrant photos of beautiful animals and stunning facts in conjunction with informational text and useful charts and diagrams, readers will learn and understand concepts such as habit loss and learn ways that animal activists help to protect animals and their environments, as well as helpful tips to get involved in...

Venerado y vilipendiado a un tiempo, Lobachevski se cierne imponente sobre la matemática del siglo XIX. Al igual que sucede a la mayoría de los mitos, el Lobachevski real está oculto por capas de negligencia y desconocimiento. Su fantástica obra, argumentaban muchos, no era otra cosa que herejía matemática, una senda falsa. Lobachevski es una personalidad abrumadora, un soñador empedernido, un hacedor de mundos imposibles pero reales. Lobachevski es, para muchos, una persona desconocida. Este libro cuenta la historia de un hombre sencillo, pero sagaz, obstinado y profundo desde el...

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

An introduction to the night sky, describing major constellations and the planets of the solar system.

Read Along or Enhanced eBook: Elementary readers learn about famous pirates and pirate history in this informative, Spanish-translated nonfiction title. Through colorful images, fascinating facts, informational text, and compelling stories, children will learn about famous pirates such as Captain Kidd, Blackbeard, Anne Bonny, Black Bart, Edward Low, Lady Mary Killigrew, and Mrs. Cheng.