La población de Chicago: Analizar los datos (The Population of Chicago: Analyzing Data)

When winter hits, many people in colder climates spend most of their time indoors. But what do wild animals do? Some animals spend winters hibernating. Beginning readers will learn what hibernation is, why some animals hibernate and others don't, and how hibernating animals prepare for their long sleep. Full-color photographs grab readers' attention and allow them to draw connections to the narrative. Readers will love learning about this mysterious, restful time in some animals' lives.

¿Sabías que las medusas pican a sus presas? Aprende más sobre las fascinantes criaturas que viven en cada océano de la Tierra. Las fotos frescas y vibrantes involucran a los lectores jóvenes mientras construyen las primeras habilidades de lectura de no ficción. Zap! Did you know that jellyfish sting their prey? Read on and learn more about the fascinating creatures that live in every ocean on Earth. In this Spanish-language edition, carefully leveled text and fresh, vibrant photos engage young readers as they build early nonfiction reading skills.

Un libro didáctico, de fácil lectura y ameno, para que tanto peques como más mayores podamos aprender de forma breve y divertida, parte de la historia de nuestro país a través de las peripecias y vidas de 100 PEQUEÑAS niñas que llegaron -como tú lo harás- a ser GRANDES mujeres. Ellas nacieron con ganas de ser diferentes, de cambiar las cosas y demostrar al mundo, que eran tan importantes y capaces como el que más, de ser pioneras, de llegar más allá y sembrar una semilla para que otras, siguieran su camino. Un libro lleno de ilustraciones a color, repleto de valores sobre...

A foundered Victorian ship looking for the fabled Northwest Passage holds a secret in its icy grave... When Dirk Pitt of NUMAr is almost blown to pieces in a lab explosion, he suspects sabotage. The lab in question belongs to a scientist hoping to use a rare mineral to combat greenhouse gases - but who would want to destroy our one chance to save the planet? However, there are those who will do anything to control such a valuable prize. Pitt's investigations take him to the Arctic in search of a clue to the origins of this precious mineral. There he and NUMAr colleague Al Giordino must battle ...