¿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.

In this illustrated adventure, Hannah has a broken leg, and learns how her friends can be of great help. Books of the Neighborhood Readers Program build early literacy skills, introduce important content-area language, and help develop speaking and writing skills. They can be integrated into any existing language arts or core reading programs.

Cuando una persona desea realmente algo, el Universo entero conspira para que pueda realizar su sueño... Descubre en esta guía de El Alquimista. Edición para estudiantes, las claves para orientar y estimular tu lectura del clásico de Paulo Coelho. El Alquimista relata las aventuras de Santiago, un joven pastor andaluz que un día abandonó su rebaño para ir en pos de una quimera. Con este enriquecedor viaje por las arenas del desierto, Paulo Coelho recrea un símbolo hermoso y revelador de la vida, el hombre y sus sueños. Esta guía incluye cuestionarios que contribuyen al estudio y...

In 1848, gold was discovered in California, attracting over 300,000 people from all over the world, some who struck it rich and many more who didn't. Hear the stories about the gold-seeking 'forty-niners!' With black-and-white illustrations and sixteen pages of photos, a nugget from history is brought to life!

First readers will begin to learn and identify shapes, which are the building blocks for learning math.