Fundamentos de televisión analógica y digital

Una pequeña vive en dos casas. Una es la que comparte con su madre y su abuela; en la otra, su mundo se ensancha en una aventura con su padre. Dos lugares que, más que opuestos, se complementan entre sí. Dos lugares que la acogen y donde ella construye su propio universo.

Únete a Tortuguito en su increible viaje desde la playa donde nació y a donde vuelve tiempo después, en un viaje increíble y peligroso. él tiene que ser valiente, tiene que ser audaz y todo debe hacerlo por su cuenta.

Our toilets toil away for us every day. Yet, they get little thanks for their hard work! When you think of toilets, you probably picture one in your home. But, toilets can be very different around the world. At first glance, a toilet is a simple device, but they are critical for proper sanitation. There are many people worldwide who do not have access to a toilet. Let's dive into an exploration of the history, importance, and inner workings of toilets! This Spanish book combines math and literacy skills and uses everyday examples of problem solving to teach subject area content. The...

During the American Civil War, the United States was on the brink of falling apart irrevocably. As states seceded and brother turned against brother, hope for reconciliation was dim. This conflict, an essential topic of the social studies curriculum, is skillfully presented from its origins in the Southern slave-trade economy to bloody battles and, later, Reconstruction. Striking photographs and artwork of integral events and people will resonate with readers, while interesting sidebar information gives them more to reflect on about this terrible war and the lessons it taught us.