Qué hacer cuando las noticias te asustan

Quizá los trilobites no sean tan espectaculares como los grandes dinosaurios. Sin embargo, estos pequeños seres prehistóricos –los cuales vivieron durante el periodo Cámbrico, es decir hace 542 millones de años–, tienen mucho que decirnos sobre el pasado remoto de la Tierra y sobre los seres vivos en general. Su fascinante anatomía, por ejemplo, guarda curiosas similitudes con otros animales y con un sinfín de objetos de uso común hoy en día. Este ameno libro toma a los trilobites como tema para hablarnos de la biología pero también de ingeniería. Los autores se refieren lo...

Learn about outer space exploration, from the Hubble telescope to the latest space shuttle launches, in this delightful, Spanish-translated nonfiction title! Readers will learn about famous astronauts, the history of exploring space, and what the future holds for space exploration through vivid images and photographs, informative text, and intriguing facts. With a glossary and index, readers will want to learn all they can about exploring space! This 6-Pack includes six copies of this title and a lesson plan.

Not everyone in the United States is eligible to vote. Voting rules are different in every state. For federal elections, however, voters must have U.S. citizenship to vote. Voters must be 18 on or before the next Election Day to cast their ballot. People must live in their state for a certain period of time before being eligible to vote. All people wishing to vote must be registered by a certain date depending on which state they live in. This book explains who is eligible to vote in U.S. elections as well as who is not eligible to vote. Readers will make connections to the text through...

Illustrations and text present the history, geography, people, politics and government, economy, and social life and customs of Arizona, the Grand Canyon State.