¿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.

Thomas Edison is considered by many to be one of the greatest inventors of all time. His creations changed the world, but there was more to his life than just his inventions. Readers of this engaging volume will learn all about the man behind the innovations. This fascinating biography introduces important subjects and encourages a further interest in history. Concise and accessible text paired with vibrant photographs is sure to captivate audiences of many ages and levels.

Los problemas y retos del medio ambiente cada día están más presentes tanto en los medios de comunicación como en la agenda de los gobiernos. La ecología es una disciplina altamente compleja, porque en ella convergen ciencias como la biología, la meteorología o las políticas económicas e industriales. 105 ideas de ecología ha sido diseñado para acercar al lector de a pie a las cuestiones medioambientales que afectan al presente y al futuro de nuestro planeta. De la biodiversidad al efecto invernadero, pasando por conceptos como el nicho ecológico o el bioma, este pequeño gran...

¿Cómo involucras realmente a los estudiantes en el aprendizaje de la historia? Cuando los estudiantes establecen conexiones personales con la asignatura, están mucho más motivados para aprender. Este libro en español proporciona relatos de la historia de primera mano que brindan una visión personal de los eventos históricos. Los estudiantes aprenderán cómo era la vida de las personas que viven en las Colonias del Sur. Con un diseño visualmente atractivo, este libro presenta texto cautivador, datos divertidos, barras laterales y líneas de tiempo que ayudan a los estudiantes a...

From Basic Information About Air Pressure To Cloud Formations, This Book Goes On To Explain Violent Weather Conditions And How To Prepare For Them. Also Talks About The Earth's Changing Weather Patterns And Climates And What Role We Play In Those Changes.