La historia de los sistemas numéricos: Valor posicional (The History of Number Systems: Place Value)

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...

Nuevo Prisma nivel C1 Ejercicios es un material elaborado para consolidar y mejorar el aprendizaje de la lengua a través de actividades que practican la comprension auditiva y lectora, la expresion orale y escrita, los elementos lingüisticos y el léxico, siguiendo un enfoque comunicativo, orientado a la accion y centrado en el estudiante. Asimismo, cada unidad incluye un apartado especifico para la preparacion del examen DELE, segun las directrices de los examenes oficiales del Instituto Cervantes, de manera que el estudiante puede trabajar, a través de las diversas actividades propuestas ...

Imagine a career where you get paid to draw all day. That's what botanical illustrators do! Get inside the mind of a botanical illustrator, and learn how their intricate drawings of plants help science. Created in collaboration with the Smithsonian Institution, this Spanish book ignites a curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides English language learners through every step of the engineering design process. Inspire students to pursue a STEAM career with career advice from a real person working in a STEAM field. Discover...

Introduces Iran, including the geography, people, education, rural and urban life, housing, food, work, and amusements, along with other information about the country.