Los ciclos de vida de los peces (Fish Life Cycles)

Many insects hatch from eggs and molt several times as they grow bigger. Others, such as butterflies, undergo a complete metamorphosis. A common science curriculum topic, insect life cycles may be confusing because of these differences. However, this book breaks down these cycles into easy-to-understand steps in both accessible language and colorful diagrams readers can turn to for review again and again. The most important vocabulary needed to talk about insect life cycles is further explained in fact boxes and an extended glossary.

Firme alegato contra la sociedad patriarcal tradicional, EL SOMETIMIENTO DE LA MUJER es uno de los textos que sentaron las bases de la emancipación de la mujer y su incorporación a la sociedad civil en pie de igualdad con el varón, y que habría de ver sus mayores logros –cuando menos sobre el papel– en el siglo xx. Compuesto por JOHN STUART MILL (1806-1873) entre 1860 y 1861 con la participación de su hijastra Helen Taylor, decidida activista a favor del sufragio femenino y de los derechos de la mujer, lo que da a este ensayo su valor de universalidad y permanencia –nos dice Carlos ...

Material para el alumno que sirve de apoyo al libro del alumno, para afianzar los conocimientos adquiridos en dicho libro. Ofrece una serie variada de ejercicios de refuerzo.

Computer science is all around us, at school, at home, and in the community. This book gives readers the essential tools they need to understand the computer science concept of data analysis. Brilliant color photographs and accessible text will engage readers and allow them to connect deeply with the concept. The computer science topic is paired with an age-appropriate curricular topic to deepen readers' learning experience and show how data analysis works in the real world. In this book, readers look at data about the population of Chicago in order to learn more about the city. This...

There is a bright light in the night sky. Sometimes it is round like a ball, sometimes it is a crescent, and sometimes it is not there at all! What is this strange and changing thing? It is the moon, of course! Read all about our moon and the moons surrounding other planets in this Spanish-translated book.