Sagradas

Before there was the U.S. Constitution, there were the Articles of Confederation. Readers discover the story behind the first written constitution of the United States—from the factors that inspired its creation to the reasons why it was replaced. The detailed main text is enhanced by informative sidebars and graphic organizers. Historical images, including relevant primary sources, allow readers to immerse themselves in this historical period. Readers are given the chance to thoroughly examine elements of the original document, making them feel like true historians. They’re sure to enjoy ...

éste es un libro recomendable que ha sido muy bien pensado y supervisado por un equipo de profesionales, en el que la literatura viaja con elementos científicos para que los niños puedan acceder al mundo de las respuestas ante las infinitas preguntas que la naturaleza impone. Comienza con un Prólogo, a cargo de la Psicóloga Paula Budich, donde explica la evolución de los impulsos sexuales del niño (los trae desde el nacimiento y luego van decayendo a causa de la represión, en el período de latencia, orientando sus energías hacia las actividades escolares, artísticas y deportivas)....

Diamonds and salt are both minerals, but diamonds are more rare than salt. Curious readers will learn what physical and chemical conditions must be present for minerals to form. They'll discover how minerals are identified and how they are used in daily life. Informative and interesting text presents readers with this science content in a fun way. A graphic organizer shows how different minerals are identified and fact boxes provide readers with exciting supplementary information.

Examines The Properties Of Matter, The Use Of Energy From Gasoline Or Batteries, And Various Other Sources Of Energy.