Exploremos el ciclo de la roca (Exploring the Rock Cycle)

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.

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.

When rocks change because of environmental conditions, the new rocks are called metamorphic rocks. A rock's chemical or physical makeup may change because of conditions such as temperature, stress, or pressure. Your readers will learn fascinating facts including where metamorphic rocks are most commonly found, the different types of metamorphism, and how metamorphic rocks are identified. Full-color photographs depict these rocks in nature. A helpful graphic organizer shows how these fascinating rocks form.

Han pasado casi 30 años desde que se publicó esta novela que impulsó el renacimiento del fenómeno de publicaciones de Star Wars. Incluye una introducción del galardonado autor Timothy Zahn y una novela corta completamente nueva protagonizada por el popular Gran Almirante Thrawn. Como uno de los eventos más importantes en la historia de los libros de Star Wars, Heredero del Imperio sigue las aventuras de Luke Skywalker, Han Solo y la Princesa Leia después de haber llevado a la Alianza Rebeldehacia la victoria en Star Wars: Episodio VI. El regreso del Jedi. Cinco años después de que la ...

Is conversational Spanish turning a little too tricky for you? Do you have no idea on how to order a meal or book a room at a hotel? If your answer to any of the previous questions was ‘Yes’, then this book is for you! If there’s even been something tougher than learning the grammar rules of a new language, it’s finding the way to speak with other people in that tongue. Any student knows this – we can try our best at practicing, but you always want to avoid making embarrassing mistakes or not getting your message through correctly. ‘How do I get out of this situation?’ many...

Introduces the life and times of Underground Railroad and anti-slavery leader Harriet Tubman and explains her place in American history.

En esta edición en español del primer álbum ilustrado escrito por una beneficiaria de DACA -una "dreamer"- Areli Morales narra su poderosa historia como inmigrante. En la casa de la abuela -en las montañas de México- los sábados estaban llenos de familiares y de mucho sol. Areli era buena jugando al escondite y aún mejor persiguiendo gallinas. Cuando Areli era sólo una bebé, su mamá y su papá se mudaron a Nueva York con su hermano -Alex- en busca de una mejor vida para su familia. Cuando Areli entró a preescolar, enviaron a alguien por ella también. Todo en Nueva York era...