¿Por qué hibernan los animales? (Why Animals Hibernate)

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.

Although Earth is mostly made up of igneous and metamorphic rock, sedimentary rock covers about 75 percent of Earth's land surface. This means it's the most visible kind of rock on Earth. Sedimentary rocks form when sediment accumulates and compacts. Your readers will learn how sedimentary rocks form, the different types of sedimentary rocks, and how people use sedimentary rocks. Fun fact boxes provide readers with additional information. A helpful diagram illustrates how sedimentary rocks form.

La historia de los avances más importantes de la humanidad como nunca te la han contado. ¿Qué tiene que ver Tales de Mileto, el primer filósofo de Occidente, con el wifi? ¿Qué elemento de la tabla periódica sirve para preparar deliciosos postres y enviar naves al espacio exterior? ¿Qué tiene que ver la invención del acueducto con el teatro callejero? ¿Por qué las mujeres son las principales precursoras del arte? ¿Cómo la vitamina C nos ayudó a medir la distancia entre la Tierra y el Sol? ¿Por qué sin la agricultura no hubiéramos desarrollado sentido de la moda? Episodios...

Yo soy sólo entre colillas, soy la cecina del poema en el que no creo, soy la cecina del verso y del poema, soy el que vive sin tener ya sentido.

Read Along or Enhanced eBook: Take a journey into the wild world of reptiles and amphibians! Readers will learn about crocodiles, lizards, snakes, tortoises, and salamanders. Featuring a glossary, index, colorful images and charts, intriguing facts, and clear, informative text, readers will be sure to be enthralled as they move through this engaging, Spanish-translated book.

Written in a vivid and accessible style, this history book addressed to young readers focuses on one of the most relevant periods in Mexican history: that of the country's strife for independence from Spain. In addition to its descriptive historical account, the book includes charts, illustrations, and a timeline of main events from 1808 through 1821 that help make the information even more entertaining and clear for children.