Rastreo del tiempo (Tracking the Weather)

Over the years, people have looked for ways to improve our imperfect sight. This has led us to the world of optics, which is the study of light and how it travels. What are some of these innovations that have changed how we see the world, and how do they work? Find the answers to these questions with this Smithsonian Informational Text! Created in collaboration with the Smithsonian Institution, this text builds students' reading skills while engaging their curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides students through every step...

Our toilets toil away for us every day. Yet, they get little thanks for their hard work! When you think of toilets, you probably picture one in your home. But, toilets can be very different around the world. At first glance, a toilet is a simple device, but they are critical for proper sanitation. There are many people worldwide who do not have access to a toilet. Let's dive into an exploration of the history, importance, and inner workings of toilets! This Spanish book combines math and literacy skills and uses everyday examples of problem solving to teach subject area content. The...

How do you truly engage students in learning history? When students make personal connections to the subject, they’re much more motivated to learn. This Spanish book provides firsthand accounts of history that give personal insights into historical events. Students will learn about California’s gold rush by examining maps, letters, images, and art from that time. With a visually appealing layout, this book features captivating text, fun facts, sidebars, and time lines that help students grasp the essential concepts they need to know at their grade level. Packed with information and primary...

Llega la última entrega de la trilogía sobre el asesinato de Olof Palme El jefe de la Policía Nacional sueca, Lars Martin Johansson, un hombre criado en el Norte, agradable y simpático, está a punto de jubilarse. No obstante, antes de abandonar su cargo toma una decisión que tendrá graves repercusiones: revisar los archivos del asesinato, aún no resuelto, de Olof Palme, una herida todavía abierta de la sociedad sueca. Lars Martin Johansson decide formar un nuevo grupo de policías para reanudar la investigación y consigue abrir una vía entre los miles de archivos que esconden la...

A biography of the Austrian bodybuilder who became an international action film star, an American citizen, and the governor of California.

Gender studies of Spain has thus far focused almost exclusively on women, leaving the social and political history of male homosexuality virtually untouched. "'Los Invisibles'" fills this significant gap in the study of Spanish culture by analyzing the effects of medical and legal regulation on male homosexuals. Drawing from the discourse of medical history, Richard Cleminson and Francisco Vazquez Garcia evaluate the impact of psychiatry, education, race, and the growth of gay subcultures on cultural representations of homosexuality in this pioneering study.

Describes the physical characteristics of spiders, different species, the webs they build, how they hunt for food, reproduction, and more.