El magnetismo (Magnetism)

The US president is the face of the United States to the rest of the world. However, he or she doesn’t have unlimited power within the country. The president has certain powers given by the Constitution, including the ability to make treaties, appoint some important government officials, and veto laws. Readers learn the many duties of the president in simple, clear language appropriate for both younger readers and older readers looking for a succinct review of the topic. Fact boxes supplement the main content with important details about checks and balances, amendments, and more that affect...

Newton's laws aren't the easiest science topics to digest. Struggling readers likely find understanding them even harder. This volume breaks down the topics of force and motion to its most basic and understandable parts, perfect to introduce to readers having a hard time or students looking to review for class. Written in succinct language, each chapter contains fact boxes and graphic organizers to aid all readers as they move from speed, to velocity and on.

“Dino” Don Lessem brings readers face-to-face with various dinosaur species, detailing their habitats, way of life and how they became extinct. An acclaimed dinosaur expert, Don Lessem has written more than 30 children’s books, writes a popular dinosaur column in Highlights magazine, and was an adviser for Jurassic Park. Take a trip through dinosaur time to meet these horned dinosaurs face-to-face: Torosaurus had the biggest skull of any animal ever! Pentaceratops had five sharp horns on its head! Styracosaurus was as big as an ice cream truck! Plus, you'll get to know Centrosaurus,...

Por causas que aún se desconocen, uno de los mejores escritores franceses del siglo XIX no pudo ver publicada su Opera Prima. A pesar de que todas sus novelas obtuvieron un éxito abrumador en aquella época, su primera obra nunca llegó a ver la luz y fue censurada y guardada en una caja fuerte en algún recóndito lugar del viejo París. Ahora, un siglo después, el nieto de un empleado de la Biblioteca Nacional de Francia, ha descubierto que bajo la ajustada prosa de las apasionantes novelas de Julio Verne existe un mensaje cifrado que indica dónde puede estar guardado el manuscrito...

He aquí una excelente colección de las denominadas “frases y citas célebres”, supuestas o no, pronunciadas en la más diversas épocas y países según la tradición, por personajes en general importantes (de aquí el epíteto aplicado a las frases y citas) como emperadores, reyes, escritores y artistas. Al no existir la tecnología actual han sido conservadas desde hace mucho tiempo por tradición oral y escrita en documentos antiguos. Es imposible aseverar la autenticidad de todas, pero como dice el refrán italiano: “si no son ciertas, están bien encontradas”.

Learn how crayons are made with this fun and informative STEAM book! Perfect for kindergarteners, this title makes it easy for parents and teachers to introduce STEAM to their youngest learners. Created in collaboration with Smithsonian, this Spanish book uses real-world examples to make STEAM topics easier to understand. It features an age-appropriate STEAM activity that is ideal for makerspaces and introduces English language learners to the steps of the engineering design process. It helps beginning readers learn to read and is ideal for children ages 4-6.