Hacia Los Confines del Universo

An asteroid hitting Earth may sound like science fiction, but it is a real danger. This book explores what the different scenarios might be and how we can prepare ourselves in case such a disaster should occur.

The greatest thinkers of humanity at your fingertips, in minutes! If you thought you would never be able to understand the essential classic authors, you were wrong! With our "Summarized Classics" collection, you will understand the main ideas of the most important thinkers in a very short time and with little effort. The present volume covers the central axes of this discipline. Among them, the reader will find an analysis of the following: In addition to a summary of the essentials of the classic work Leviathan (1651), we offer the reader a description of the historical context in which...

There are many steps in the nitrogen cycle that include difficult concepts and words: denitrification, prokaryotes, ammonia, and more. With the help of this understandable book, even struggling readers will grasp this cycle of nature. Low-level language, fact boxes, and an extended glossary provide readers with essential vocabulary explanations that allow them to further understand each step of the cycle. Full-color diagrams aid readers' comprehension as they move through the cycle from start to finish, and then around again.

Este libro aporta conocimientos profesionales imprescindibles para la observación, documentación e interpretación de las primeras matemáticas, intuitivas e informales, que aprenden y usan los niños de 0 a 3 años: las cualidades sensoriales, las cantidades, las posiciones, las formas y los atributos mesurables. El libro concluye con la presentación de diez propuestas educativas para potenciar el interés natural por las matemáticas intuitivas e informales durante la primera infancia. Con más de cincuenta imágenes a todo color, se ilustran estos conocimientos y propuestas educativas,...