Un poema para mis abuelos

When winter hits, many people in colder climates spend most of their time indoors. But what do wild animals do? Some animals spend winters hibernating. Beginning readers will learn what hibernation is, why some animals hibernate and others don't, and how hibernating animals prepare for their long sleep. Full-color photographs grab readers' attention and allow them to draw connections to the narrative. Readers will love learning about this mysterious, restful time in some animals' lives.

In this inspiring Spanish-translated biography, readers will learn about the life of Wilma Rudolph, the first American woman to win three gold medals at one Olympics. Readers will feel engaged and inspired as they read about Rudolph's incredible journey from a young girl with polio, to her first encounter with track and field, to becoming one of the best Olympic athletes of her time! A timeline of Rudolph's life, a glossary, and index are provided for further understanding of the content and improvement in vocabulary.

En todo el mundo, las mujeres siempre han soñado en grande, aun cuando les han dicho que sus sueños no cuentan. Han alzado sus voces, se han levantado en protesta y han luchado por lo que es justo, a pesar de que, a veces, sus voces han sido silenciadas. Ya sea en las ciencias, las artes, los deportes o como activistas, mujeres y niñas a lo largo de la historia han luchado por romper barreras y cambiar el statu quo. No han permitido que otros se interpongan en su camino, nos han ayudado a entender mejor nuestro mundo y lo que es posible lograr. En este segundo libro, compañero de Ella...

Imagine traveling at half the speed of a jet plane without ever leaving the ground! Students will discover the technology that makes such speeds possible, from special tracks and safety precautions to aerodynamically designed trains. What are the limits to the speed of trains? What imposes those limits? Students also will read about the future of passenger train travel, from flying trains to trains that use huge magnets to levitate inches or centimeters off the track. Some trains safely reach speeds of more than 200 mph!