¿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.

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.

Read Along or Enhanced eBook: Lights! Camera! It's time to explore the art of animation! This engaging, Spanish-translated nonfiction title allows readers to explore an exciting career as an animator. Readers will be introduced to the history of animation and find out what techniques and equipment animators used to turn their illustrations into the first animated shorts. Through stimulating facts, vivid images, sketches, photos, informative text, and an interview with a real life animator, readers will discover everything about animation, including character development, storyboarding, and...

Read Along or Enhanced eBook: Welcome to Canada! From its majestic mountains to its exciting sports, readers are invited to explore what makes Canada so special in this exciting, Spanish-translated nonfiction title! With informational text, fresh vocabulary, and engaging maps, readers will be engaged from beginning to end.

Sitting Bull first went to battle at the age of 14. He grew to be widely respected for his bravery and insight, and became chief of the Lakota nation in his thirties. By the time he met General Custer at the Battle of Little Big Horn, his courage was legendary. Though he soundly defeated Custer, public outrage at the defeat brought thousands of cavalrymen to the area, where it took four more years before the brave chief would surrender. He was forced onto a reservation where he was later killed when police attempted to arrest him.

Este libro contiene 90 entrena-mentes, actividades diseñadas para mejorar el funcionamiento de tu cerebro: ejercicios de memoria, juegos de palabras, problemas numéricos, retos visuales, códigos secretos, variantes divertidas del sudoku...