Triceratops

Tras años de estudio de los llamados misterios de nuestro mundo, el autor Pedro Silva decidió hacer una selección de una decena de hechos que a todos despiertan la mayor curiosidad. Su investigación se encaminó hacia el objetivo de proporcionar al lector las tan ansiadas respuestas a cuestiones tan seductoras como los misterios del Antiguo Egipto, las civilizaciones maya, azteca e inca o la relación que existe entre Lucifer y su diabólica compañera Lilith. El ensayista Pedro Silva va todavía más lejos, desvelando la noción de Paraíso existente en las más diversas culturas. Por...

People today refer to the Midwestern and prairie states as flyover country. During the Civil War, crossing those areas was the biggest obstacle in uniting the East and West Coasts of our divided nation. An act of Congress in 1862 authorized the Central Pacific and the Union Pacific railroad companies to build a railroad that would link the coasts. Seven years later, on May 10, 1869, an overwhelmingly immigrant labor force completed the task when a rail line was join in Promontory, Utah. The states had become united at last.

A researcher looks at cells under a microscope. A scientist studies bacteria in a Petri dish. A student boils liquid in a test tube. What do these things all have in common? The answer is: glass! Learn how something as simple as glass has played a huge role in scientific exploration with this fascinating Spanish Informational Text created in collaboration with the Smithsonian Institution! Build reading skills while engaging students' curiosity about STEAM topics through real-world examples. Packed with factoids and informative sidebars, this Spanish book features a hands-on STEAM challenge...

In life there are lots of things that come and go, transform, or get left behind. It happens to everything . . . except this. This book deals with life changes and the passage of time with a great deal of sensitivity. To reinforce the message, each scene includes a page with special paper that invites us to witness the transformation.