La antigua Roma (Ancient Rome)

Wind Power: A waving flag, blowing leaves, a kite soaring through the skyall are moved by wind power. Wind is also our fast-growing source of energy. Find out how wind forms and the different ways we may use it in the future.

En la sala de los animales africanos de un zoo, hay un león, un avestruz y una cebra. Los dos primeros nacieron en cautividad, y a la cebra la cazaron siendo todavía una cría. No conocen otra vida más allá de sus diminutas jaulas. Pero pronto llega un compañero nuevo, el gorila, que sí ha conocido la libertad en África, adonde quiere volver a toda costa. Este animal les hace ver a los demás que viven encerrados, y les explica lo que es la verdadera libertad.

Teach students about the life of Abigail Adams with this biography that has been translated into Spanish. Primary source documents and images will engage readers as they build their literacy skills and social studies content knowledge. This nonfiction book also encourages children to recognize someone who inspires them. Informational text features help students navigate the text.

Unlike their domesticated relatives, wild turkeys can fly. Readers will learn about the pecking order of turkey flocks, how turkeys avoid predators, what foods these birds eat, and much more. The turkey’s association with Thanksgiving is addressed, as is the impressive comeback these birds made after their numbers plummeted in the early twentieth century.

Learn the history of number systems with this engaging Spanish book! This text combines mathematics and literacy skills, and uses practical, real-world examples of problem solving to teach math and language arts content. Students will learn place value while reading about the number systems of the Egyptians and Romans, and also learn important vocabulary terms like cuneiform, binary systems, roman numerals, and more! The full-color images, math charts, and practice problems make learning math easy and fun. The table of contents, glossary, and index will further understanding of math and...