Exploremos los minerales de la Tierra (Exploring Earth's Minerals)

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.

The rock cycle has been taking place for millions of years. However, geologists have only known about this phenomenon for about 300 years. Young terrestrial explorers are introduced to different types of rocks, where in the cycle these rocks fit, and where in Earth's layers each step takes place. Fact boxes provide readers with fun additional information. A diagram helps readers make sense of the new information they're learning.

Kids often play with magnets, yet they don't learn how these playthings work for many years. Practical knowledge from their play can help them learn more about magnetism, and so can this book. Specially written for those with reading challenges or readers looking for a review, the main text covers important vocabulary, magnetic fields, and a discussion of why metals and magnets come together. Diagrams and succinct fact boxes offer additional ways to learn each concept and explain some ideas in greater detail.

Hop on that big red truck for a real adventure! Being a firefighter takes a lot of hard work. Early elementary readers learn about the important responsibilities it takes to be a firefighter--from the fire equipment to living in the fire station. With vivid photos and images, a timetable of firefighting history, informational, Spanish-translated text, and intriguing facts, this book will have readers engaged and eager to learn all about this stimulating occupation. This 6-Pack includes six copies of this title and a lesson plan.

Marzo de 2009: un niño estornuda en un pueblo de México. Dos meses después, miles de personas se infectan en todos los rincones del planeta y comienza el recuento de fallecidos. Acababa de estallar la pandemia de la gripe A (H1N1), de consecuencias aún imprevisibles. En 1918, la gripe mató a millones de personas. Estamos ahora mejor preparados que hace un siglo? Ha sido exagerada la respuesta de las autoridades o se ha hecho frente al problema con la severidad necesaria? Es segura la vacuna contra la gripe? Qué consecuencias puede acarrear no vacunarse? Más allá de la gripe, pueden...

The rock cycle has been taking place for millions of years. However, geologists have only known about this phenomenon for about 300 years. Young terrestrial explorers are introduced to different types of rocks, where in the cycle these rocks fit, and where in Earth's layers each step takes place. Fact boxes provide readers with fun additional information. A diagram helps readers make sense of the new information they're learning.