La represa de Itaipú

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

Colorful photographs feature children on their way to school, in their classrooms, and following school rules. Young readers will also learn about the jobs of teachers, librarians, and principals. An important section teaches children how to stay healthy inside their school communities.

Think there's just one fairy tale with a beautiful girl and an evil stepmother? Think again! Cultures all around the world have their own Snow White stories. Visit Albania, Germany, Mozambique, and Turkey, and find out who meets 40 dragons instead of "seven dwarfs," and on whose forehead a bright star shines. Fully translated Spanish text.

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...

"Los jóvenes protagonistas viven una vida muy "organizada" en donde no hay libros y las computadoras guardan toda la información conocida. En este mundo descubren, a través de libros que hallaron escondidos en una casa vieja, que anteriormente el cielo no era gris, sino azul, y que había también un círculo que pareća de fuego y brillaba en el centro de él, proyectando sobre la Tierra una luz que no era artificial. El mar no estaba contaminado y había bonsáis gigantes que brotaban del mismo suelo en total libertad. Abril y David -que así se llaman los protagonistas- deciden seguir...