Las Libelulas

Farmers use tractors to plow their fields. Tractors are also used on construction sites. The biggest tractors are as wide as a road. Learn more about these machines in Tractors, an AV2 media enhanced book

El crucero es uno de los barcos más grandes del mundo. El barco crucero más grande puede llevar unas 8.700 personas a bordo. Aprende más sobre estas máquinas poderosas en Los cruceros, uno de los libros audiovisuales de AV2. Cruise ships are some of the largest boats in the world. The biggest cruise ship can carry about 8,700 people. Learn more about these mighty machines in Cruise Ships, an AV2 media enhanced book.

¿Sabías que los insectos palo se llaman ninfas cuando son jóvenes? Las ninfas cambian la piel cuando crecen. Aprende más datos fascinantes en Los insectos palo, uno de los libros de Insectos Fascinantes. Did you know that stick insects are called nymphs when they are young? Nymphs shed their skin as they grow. Learn more fascinating facts in Stick Insects, a Fascinating Insects book.

Immigrants help make the United States a special place. Learn all about the history of immigration to the United States as you sharpen your data measurement skills! This Spanish math book seamlessly integrates the teaching of math and reading, and uses real-world examples to teach math concepts. Text features include images, a glossary, an index, captions, and a table of contents to build students' vocabulary and reading comprehension skills as they interact with the text. The rigorous practice problems, sidebars, and math diagrams extend the learning experience and provide multiple...

Este libro ofrece una introducción a todas formas de vida en el océano y discute como el hombre ha dañado su ambiente.

Ésta es la historia de Abul Qasim, el médico del califa Abderrahmán III. Abul operaba cataratas, hernias y bocios; hacía traqueotomías, trepanaciones, amputaciones y, incluso, intervenía cólicos misereres.

Learn all about the leaders in local government. Find out the duties of a city council, its role in making city laws, and groups a city council works with to help run the city.