10 ríos que transformaron el mundo

¿Sabías que a lo largo de la historia han muerto más personas a causa de las epidemias que por culpa de las guerras y otros desastres? Algunos científicos, a veces arriesgando sus vidas, investigaron las causas de enfermedades como la peste, el cólera, el sida o el ébola. Muchos de ellos fueron objeto de burla, fueron ignorados, e incluso los despidieron de sus trabajos. Sin embargo siguieron intentando encajar las piezas del puzle de las epidemias. Y la primera pieza, la más importante, era el «paciente cero», la primera persona que hubiera contraído la enfermedad, porque así...

Readers begin to explore the vastness of our universe in this engaging volume. They start with subjects such as comets, meteors, planets, and more. Vivid full-page photographs accompany accessible text in both English and standard Latin-American Spanish.

Presents commonly used Spanish words and phrases accompanied by illustrations of situations in which to use the newly acquired language.

This book is primarily intended to help Spanish learners in achieving great performance on the Spanish DELE exam, specifically for the level A1. In addition, it may also assist native speakers of Spanish who want to acquire, refresh or improve their knowledge to become linguistic educators. It’s important to highlight that speaking a language does not guarantee success in a specific examination. This is due to the structured design of the test, with particular questions which aim to evaluate the diverse skills of the language learners. There is a variety of questions organized by tasks and...

Book Features: • Ages 4-8, Grades PreK-2 • 16 pages, 8 inches x 8 inches • Simple, patterned Spanish text with full-color pictures • Includes comprehension questions, writing prompts, and high frequency words • Graphic organizers and photo glossary included Bring Learning to Life: In Listos para las Ciencias: Los Seres Vivos, preschoolers—second graders learn about different types of living beings, just like you! Science Made Fun: Living beings are all around us, including you and me! Young readers learn about different types of living beings, from their favorite animals to plants ...