Por qué covid asusta al mundo

It's Ms. Frizzle's birthday and the class tries to bake a cake but winds up inside it, learning about mixtures and reactions that occur when ingredients are put together."

Las canciones de corro, de comba, las retahílas, las canciones de juego, las de echar a suertes, requieren un ámbito lúdico cada vez más escaso. Ya no es tan habitual ver a los niños jugando al ritmo de estas canciones en parques y plazas. La escuela, el patio del colegio, se pueden convertir, con la colaboración del maestro, en el último reducto a partir del cual rescatar estas canciones y juegos del olvido. Este extenso repertorio forma parte de nuestro folclore y, si se pierde, estaremos relegando al olvido una parte importante de nuestra cultura.

Climb aboard for a journey into the world of trains! In this fascinating, Spanish-translated nonfiction title, readers learn about the history of trains, the different uses for them, and the different types and parts including freight cars, box cars, passenger cars, and the caboose. With detailed photos, informative text, and intriguing facts, this book will have readers delighted from cover to cover!

★“Fascinating...An appealing resource sure to spark an interest in biomimicry, from casual readers to budding scientists. Recommended for all libraries.”—School Library Journal, starred review Did you know that lamps can be powered by glowing bacteria instead of electricity? That gloves designed like gecko feet let people climb straight up glass walls? Or that kids are finding ways to make compostable plastic out of banana peels? Biomimicry, the scientific term for when we learn from and copy nature, is a revolutionary way to look to nature for answers to environmental problems such...