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

Diamonds and salt are both minerals, but diamonds are more rare than salt. Curious readers will learn what physical and chemical conditions must be present for minerals to form. They'll discover how minerals are identified and how they are used in daily life. Informative and interesting text presents readers with this science content in a fun way. A graphic organizer shows how different minerals are identified and fact boxes provide readers with exciting supplementary information.

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.

Most of the Earth's changes happen over millions of years, but earthquakes can force significant changes to the land in just a few moments. Readers will learn the science of plate tectonics and its role in the development of earthquakes around the globe. They will also learn that not all rocks are created equal. In fact, rocks are all different ages! This Spanish-translated book concludes with images of the damage and destruction that earthquakes can cause. This 6-Pack includes six copies of this title and a lesson plan.

¿Por qué? Es una colección de libros cuyo objetivo es el de resolver cuestiones "espinosas" que los niños plantean a sus padres. Este libro trata el tema de la interculturalidad.

Different colors are all around us, and this series explores what they look like and where they can be found. Students identify common colors from everyday life, such as red, blue, green, yellow, and how to describe them. They also learn to classify colors by examining what types of objects display each color. Consistently placed and leveled text helps to ensure subject matter is clearly understood.

¿No confías en el gobierno? ¿Te da miedo el gobierno? ¿No te gustan los candidatos? ¿Votas por el menos peor? ¿Cuál es el problema? La Democracia Representativa por elección no es un sistema democrático; es un sistema opresivo, que polariza y divide a la sociedad, es altamente ineficiente y fácil de corromper. ¿En qué me afecta? La libertad, la seguridad, la economía, la salud, la alimentación, la educación, las oportunidades y todas tus circunstancias dependen de la organización política y económica de tu sociedad y de las personas a las que el sistema les da poder. ¿Qué...