Criptología digital (Digital Cryptology)

A biography telling the life story of Clara Barton, who served as a Civil War nurse, and started the American Red Cross. Written in graphic-novel format.

Journey to Africa to explore the world of the grasslands! Readers are taken on an adventure through the grasslands to learn about the various animal and plant life and grassland conservation in this fascinating, Spanish-translated nonfiction book that features striking photographs and riveting facts. Even the most reluctant of readers will be captivated as they move from cover to cover. This 6-Pack includes six copies of this title and a lesson plan.

¿Quién no ha jugado en alguna ocasión a las adivinanzas? ¿Quién no se ha divertido alguna vez inventando acertijos? Rosa Díaz nos ofrece en este libro una serie de adivinanzas para que tanto pequeños como mayores sigamos jugando y riendo, y, al mismo tiempo, ejercitemos nuestra capacidad de razonar y sintamos el placer de descubrir.

Measuring cups are essential in the kitchen, but they’re also crucial in the science lab. Scientists need to be precise in their experiments to test their hypotheses, and science tools such as cylinders for measuring volume aid them in their important research. This appealing book shows that young scientists, too, can use measuring containers for their own science experiments. Important STEM concepts such as volume and units of measurement are explained in a comprehensible manner.