Dinosaurios, colas y corazas

This book describes how the activity of attending a baseball game requires using math for keeping score.

After Texas earned its freedom from Mexico through a bloody revolution, its leaders were divided over whether or not Texas should join the United States. Through numerous captivating facts, vivid images, and easy-to-read text, readers will be enthralled as they make their way through this fascinating title that introduces them to Texas history, the Texas Revolution, and the Mexican-American War. The engaging sidebars and glossary, index, and table of contents make this book easy to navigate through and a perfect tool to aid in better understanding of the content and vocabulary. This 6-Pack...

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!

A retelling, in graphic novel form, of the myth of the Trojans who discover a gift of a giant horse from their Greek enemies.

Por fin llegaron las tan anheladas vacaciones y Florencia, junto a su familia, emprende un largo y accidentado viaje a la playa. Todo lo viven con entusiasmo, energía y buen humor. Hasta los problemas los viven con una sonrisa. Su mejor amigo llegará a visitarlos, y con él experimentarán una serie de aventuras e historias, cargadas de misterio y emoción. La más importante, la excursión a una lejana playa desierta, los hará pasar el gran susto de sus vidas, y reforzará los lazos que los unen.

The Underground Railroad was the massive effort by slaves and free people to secretly bring thousands of blacks to freedom in the North during the 19th century. This thought-provoking book will capture readers’ imaginations and fill them with awe for the brave “conductors” and “passengers” on the Railroad. They’ll learn about the many safe havens, called “depots,” that housed fugitives and the secret passages within them that hid slaves from their pursuers. Information about the American Civil War and the Fugitive Slave Act, biographies of figures vital to the Underground Railroad,...