An introduction to asteroids and meteoroids discusses how they are formed, what they are made of, where most of them are found, and what happens when they collide with planets.

An introduction to comets discusses how they are formed, what they are made of, where most of them are found, and why they can sometimes be seen as bright streaks in the sky.

Describes the physical characteristics, behavior, and environment of ants.

"Fernanda Melchor explora la violencia y la desigualdad en esta novela brutal. Lo hace con una destreza técnica deslumbrante, oído absoluto para la oralidad y precisión de neurocirujana para la crueldad. Páradais es un breve e inexorable descenso al infierno". Mariana Enríquez En un conjunto residencial de lujo, dos adolescentes inadaptados se reúnen por las noches para embriagarse a escondidas y compartir sus descabelladas fantasías. Franco...

An introduction to the stars discusses how stars form, different types of stars, and their lifecycle.

Presents the six-sided shape and introduces examples of hexagons found in everyday life, including soccer balls, pencils, and honeycombs.

"Proyectos de pasado is an absorbing book of fantastic stories anchored in the harsh reality imposed by the repression. In these tales, wedding goers are deported to an "island of land" in the middle of nowhere; a journalist remembers the night her father was arrested; old age and rot take over an idyllic town; and a famous theater actor is invited to a magical performance."--Amazon.com.

"This title will help readers discover Styracosaurus dinosaurs that lived in the late Cretaceous period around 75 million years ago. Each title is complete with cool realistic illustrations, photographs of fossils, and a map of where Styracosaurus fossils have been found. Aligned to Common Core Standards and correlated to state standards."--Publisher's website.

Learn why concrete mixers are important at the job site and what makes them special.

Este libro nos habla acerca de los incas, un pueblo indígena que floreció en Sudamérica ya hace varios siglos. Conoceremos a los descedientes modernos de los incas y hablaremos de las llamas, un animal muy importante para la subsistencia de este pueblo. También leeremos un artículo titulado "Arqueología de Altas Alturas", acerca del estudio de civilizaciones pasadas que habitaban en las montañas.