La era del Jazz y la Gran Depresión (The Jazz Age and the Great Depression)

When the Japanese attacked Pearl Harbor in 1941, it prompted the United States to enter World War II on multiple fronts. From Africa to Europe, the Pacific to the home front, explore the American experience of World War II through the first-hand documents of the war.

Teach young students about Susan B. Anthony and her advocacy for women's rights and equality for everyone. This Spanish-translated biography tells early readers about her inspiring life and how she became known as an amazing American. Engaging informational text, with primary source documents and images, keep students reading as they build their literacy skills and social studies content knowledge. Simple text features help students navigate the text.

Esta cuarta edición expone los fundamentos de las señales y sistemas discretos en el tiempo y procesamiento digital de señales. Este texto es adecuado para estudiantes de Ingeniería eléctrica, ingeniería informática y Ciencia de la computación.

A lift-the-flap book showing milestones in a baby's development during pregnancy and the mother's experiences as it grows.

Read this book to find out about eyes and how they differ from animal to animal. This book uses simple, repetitive text to teach children about eyes using basic vocabulary and stunning photographs that show how eyes differ across a diverse selection of animals, including humans. Children learn what eyes are for, where they are found, and what eyes look like.