Los estados de la materia — Los líquidos

Did you know that gases have no size or shape? Gases can become liquids when they get cold. Discover more interesting facts in Gases, part of the States of Matter series of EYEDISCOVER books.

Did you know that baby butterflies look like worms with legs? Caterpillars turn into butterflies inside a shell. Discover more about these flying insects in Butterflies, part of the Life Cycles series of EYEDISCOVER books.

Profiles Phoebe Ann Moses, the star sharpshooter of Buffalo Bill's Wild West show under the name Annie Oakley, who began shooting to help feed her family after her father's death.

The fascinating and glamorous world of fashion intrigues kids and adults alike. Young readers will learn how their favorite designers relied on hard work and talent to become the superstars they are today.

The use of calendars dates back thousands of years. Why are we driven to record time, and what would happen if we did not? Who created the concept of calendars? Why do different cultures use different calendar systems? And why are calendars so important to us? It is about "time" we found out! Created in collaboration with the Smithsonian Institution, this Spanish-translated Smithsonian Informational Text builds reading skills while engaging students' curiosity about STEAM topics through real-world examples. Packed with factoids and informative sidebars, it features a hands-on STEAM challenge...

La obra tiene la intencion de servir como una herramienta eminentemente practica para el estudio del modulo Sistemas de Telefonia, aunque el autor pretende que pueda ser utilizada como referencia de consulta para los interesados en la materia e incluso para que las empresas dedicadas a la instalacion de sistemas de telecomunicacion puedan emplearla para la formacion de su personal.