Salvar el medioambiente / Saving the Environment

Defines levers, explains their functions, and suggests simple experiments to demonstrate how they work.

Provides The History Of Biofuels, Different Uses, Positive And Negative Characteristics, And How They Will Impact The Future.

Defines screws, explains their functions, and suggests simple experiments to demonstrate how they work.

David Carter nos sorprende, esta vez, con el libro 600 puntos negros. Para pasar un buen rato buscando y contando puntos negros entre las páginas pero, ¡atención!, no vayáis a descontaros. Figuras fantásticas, engaños y sorpresas harán de este libro ¡el regalo perfecto!

This book presents the theoretical and practical aspects of the Sociocultural Action and it approaches the figure of the socialcheerleader as well as different environments and technical of its intervention. This figure is called to become an important part of groups in different environments and stadiums of the life: childhood, youth, adults.

What would happen if a polar bear and a grizzly bear met each other? What if they had a fight? Who do you think would win? Este lector de no-ficción compara y contrasta dos feroces especies de osos. Los pequeños aprenderán sobre la anatomía, el comportamiento y más de ambos osos. Este libro está lleno de fotos, gráficos, ilustraciones y datos increíbles.This nonfiction reader compares and contrasts two ferocious bear species. Kids learn about the bears' anatomies, behaviors, and more. This book is packed with photos, charts, illustrations, and amazing facts.

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...