Criptología digital (Digital Cryptology)

In order for any democracy to function well, understanding how and when to compromise is a necessity. This book introduces students to how compromise makes governing possible. Using examples of how compromise works in their own lives, students will gain a better understanding of how compromise work on a larger level. Conversely, readers will also learn that compromise may be the wrong course of action in some situations and that some issues are of such critical importance or high moral worth that standing firm is appropriate.

Una colección de libros para dejar de ser un bebé. La fantasía nos ayuda a crecer, y con el pato del pipí, la oveja de los sueños, el elefante de los mocos y el pájaro de la comida, los más pequeños aprenderán a utilizar el orinal para hacer pipí, la almohada para dormir, el pañuelo para sonarse y la cuchara para comer.

Read the fun clues on each page and lift the flaps to discover animals and the sounds they make and learn English words along the way! Full of first words and colorful photographs, Who Am I?/¿Quién soy? is the perfect way to introduce a second language. The carry-along handle makes it easy to read this board book anytime, anywhere!

Teach students about the years of change and reform between World War I and World War II. With this Spanish-translated book, readers will learn about events such as the Harlem Renaissance, suffrage, the stock market crash on "Black Tuesday," and the Great Depression. Primary source documents and images, and other engaging features, aid students in understanding the social studies content.