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

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.

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.

Gracias a los avances en la tecnología y las nuevas formas en que los empleados interactúan y se reúnen entre sí, las redes virtuales ahora permiten llegar a otros y hacer conexiones que no estaban disponibles en el pasado. A través de las redes sociales, Zoom y otras herramientas, puede salir adelante y conocer realmente a personas de todo el mundo. Esta guía explorará algunas de las diferentes formas en que puede llegar a otros y realmente expandir su red, sin tener que ir a la oficina o preocuparse por la distancia y otras barreras. Esto es lo que aprenderá en este libro...

In life there are lots of things that come and go, transform, or get left behind. It happens to everything . . . except this. This book deals with life changes and the passage of time with a great deal of sensitivity. To reinforce the message, each scene includes a page with special paper that invites us to witness the transformation.

What is matter? Anything that takes up space is matter. Matter can be a water, liquid, or gas. These are the states of matter. Learn about matter with this Spanish science reader that features easy-to-read text. Nonfiction text features include a glossary, index, and detailed images to facilitate close reading and help students connect back to the text. Aligned to state and national standards, the book also includes a fun and engaging science experiment to develop critical thinking and help students practice what they have learned.

"'Aula Nueva edición' es un manual compacto; es decir en un mismo volumen se incluyen: el libro del alumno, el cuaderno de ejercicios (más ejercicios), un CD con las audiciones."--Editor.