Experimentos sorprendentes con la luz

¿Por qué Covid asusta al mundo? La historia se cuenta desde el punto de vista de Covid. ¿De dónde venía Covid? ¿Por qué Covid se puso tan agresivo? ¿Por qué infectó a la gente? ¿Cómo llegó a Alemania? ¿Cómo podemos protegernos?

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.

Readers will learn about the important relationship between producers and consumers as well as buyers and sellers and how they all work together to create a healthy economy. This instructive volume defines basic economic concepts like goods and services and explains production with examples of the different types of production. It also covers the primary and secondary industries that produce goods. Concepts such as marketing and advertising are also covered, for a well-rounded view of this fascinating aspect of the economy.

This title will introduce little readers to the 1st president of the United States, George Washington. Readers will gather basic, biographical information about Washington through easy-to-read, simple text. They'll also love the historical photographs and images, the More Facts section, and bolded glossary terms. Translated by native Spanish speakers. . Aligned to Common Core standards and correlated to state standards. Abdo Kids is a division of ABDO..