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Mathematics constitutes ideal material for exercising the art of learning and thinking. For this it is necessary that the classroom has a stimulating atmosphere which requires determined attitudes and beliefs. The book combines theory and practice and responds to questions such as these: to think in the mathematics class? on what does the knowledge of solving problems really consist of? what are the beliefs and which are the most common ones among the students? how to diagnose, evaluate and, in some cases to modify, the systems of beliefs of the pupil?).

Simple text and photographs introduce the concept of symmetry as displayed by familiar creatures and objects.

René Voillaume fue el fundador, bajo la inspiración del testamento espiritual del hermano Carlos de Foucauld, de los Hermanitos de Jesús y de los Hermanitos y Hermanitas del Evangelio, presentes en todo el mundo. Fue también impulsor de varias asociaciones y movimientos sacerdotales y de laicos. La vida de sus Fraternidades, centrada en la pobreza, la obediencia y la ayuda a los más necesitados, constituye un ejemplo de vida cristiana que sigue entusiasmando a muchas personas. En el corazón de las masas contiene una colección de cartas y conferencias que expresan la base de la...

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...