Cómo funcionan los ecosistemas

An asteroid hitting Earth may sound like science fiction, but it is a real danger. This book explores what the different scenarios might be and how we can prepare ourselves in case such a disaster should occur.

Animal trainers care for many different types of animals! Children will explore some of the methods that trainers use, such as affection bonding and classical and operant conditioning, while simultaneously gaining an understanding of animal instincts and animal rehabilitation. Readers are invited to learn about the variety of animals that trainers work with and are encouraged to find an area of study to focus on if they want to become an animal trainer. With stunning images, interesting facts, a glossary of useful terms, informational text, and an interview with a real-life animal trainer,...

El dueño de una empresa farmacéutica se enfrenta a una crisis de ventas. Un colaborador le propone un plan perfecto: robar una cepa de «gripe española», un virulento virus que causó la pandemia de gripe más mortífera de la historia. Cuando la OMS aprobara la creación de la vacuna, el laboratorio ya la tendría lista. Una operación que les permitiría no sólo salvar la situación, sino también hacerse inmensamente ricos.

What do churros, macarons, and strudel have in common? In order to bake them successfully, pastry chefs must use fractions! Students will learn comparing fractions while engaged in reading about delectable desserts from around the world. This Spanish book combines mathematics and literacy skills, and uses practical, real-world examples of problem solving to teach math and language arts content. The glossary, index, and table of contents will further understanding of reading and math concepts, and the full-color images, practice problems, and math graphs and charts make learning math easy,...