Construcción de presas (Building Dams)

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...

Take a trip to the Everglades as you practice addition! About one million people visit Everglades National Park every year to see the unique animals, reptiles, birds, and fish that call this unique place home. Students will practice addition within 100 while engaged in reading about the Everglades. This nonfiction math book combines math and literacy skills, and uses real-life examples of problem solving to teach subject area content. The full-color images, intriguing sidebars, practice problems, and math diagrams make learning math concepts relevant and fun. Text features include a table of...

Describes how the rig was built, how it stands out in the water, and how much drilling it does in a day.

Partiendo del principio de que “lo que no se entrena no se juega” este libro presenta un entrenamiento específico para el puesto de portero. La obra trata desde los aspectos psicológicos hasta las aptitudes, actitudes y gestos técnicos que se deben trabajar en el entrenamiento de los porteros de fútbol base. Se presentan 200 ejercicios prácticos con gráficos explicativos que se han agrupado según los aspectos que más se ejercitan en ellos: calentamiento, abdominales y estiramientos, velocidad, potenciación del salto, salidas, acciones ofensivas, lanzamientos a puerta. También se ...