Proyectos reales para explorar la Primera Guerra Mundial y los años 20 (Real-World Projects to Explore World War I and the Roaring ’20s)

When we look up at the night sky you can see millions of stars, but what do you think we could see in space if we left Earth? If we could hop into a special ship and blast off, traveling billions of miles away from Earth, we’d see the Milky Way galaxy. In this book, readers take an incredible journey through that galaxy, exploring the universe and learning how it was formed and what will one day happen to these enormous groups of stars. From mysterious dark matter to the black holes at the center of galaxies, readers will also dive into the mysteries of the universe scientists have spent...

Estudios iberoamericanos del comportamiento positivo en adolescentes 9786075479200 Norma Alicia Ruvalcaba Romero | José Concepción Gaxiola Romero | José Concepción Gaxiola Romero | Norma Alicia Ruvalcaba Romero | Blanca Estela Barcelata Eguiarte | Sandybell González Lugo | Héctor Rubén Bravo Andrade | Mercedes Gabriela Orozco Solís | Arantzazu Rodríguez Fernández | Estibaliz Ramos Díaz | Aranzazu Fernández Zabala | Norma Ivonne González Arratia López Fuentes | Martha Adelina Torres Muñoz | Ana Olivia Ruiz Martínez | Paola Escobedo Hernández | Marco Antonio Villalta Paucar |...

Children explore the concepts of big and small in the world around them, from big round pancakes to tiny little seashells.

From the candiru to the lionfish, there are so many kinds of fish on Earth. While all have different methods of production, the basic life cycle is the same, from egg to spawning swimmers. Readers are introduced to this general cycle as well as the important vocabulary needed to talk about it, such as “fry” and “spawning.” Accessible language and simple diagrams throughout the book provide a way for struggling readers to tackle science curriculum content.

"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 sea giants face-to-face: The Archelon was similar to a turtle, but its shell was made of crossed rib bone covered in rubbery skin! The Mososaurs had huge pointy jaws and grew to be fifty feet long! The Ichthyosaurs looked a lot...