¿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.

Read Along or Enhanced eBook: Encourage readers to discover which foods are healthy for them and how to make the best food choices with this Spanish-translated nonfiction title. Featuring helpful charts and diagrams, interesting facts, informational text, and vibrant, detailed photos, readers are introduced to important concepts such as main food groups, proteins, carbohydrates, fiber, the recommended daily amounts, food allergies, and health concerns. With supportive and helpful language, readers are encouraged to make healthy eating choices to help keep them active, energetic, and strong.

¿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.

El autor se adentra en el ámbito de lo visible y lo legible, defendiendo que no debemos considerar las imágenes sólo como objetos inertes que transmiten significado, sino como entes animados con deseos, necesidades, anhelos, exigencias e instintos propios. Remitiendo a numerosos ejemplos que atraviesan las distintas artes visuales, la literatura y los medios de comunicación, Mitchell analiza tanto iconos bizantinos como películas ciberpunk, estereotipos raciales y monumentos públicos, ídolos antiguos y clones modernos, imágenes ofensivas y pinturas aborígenes.

The use of calendars dates back thousands of years. Why are we driven to record time, and what would happen if we did not? Who created the concept of calendars? Why do different cultures use different calendar systems? And why are calendars so important to us? It is about "time" we found out! Created in collaboration with the Smithsonian Institution, this Spanish-translated Smithsonian Informational Text builds reading skills while engaging students' curiosity about STEAM topics through real-world examples. Packed with factoids and informative sidebars, it features a hands-on STEAM challenge...