Cobayos

¿Quién mantiene a su comunidad a salvo? Los agentes de policía trabajan en una variedad de lugares para ayudar a proteger a las personas de los daños y asegurarse de que todo el mundo está obedeciendo las leyes. Fotos coloridas ayudan a los lectores a aprender cómo los oficiales de policía sirven a su comunidad mientras construyen habilidades de lectura de no ficción a través de preguntas de pensamiento crítico y otras características. Who keeps your community safe? Police officers work in a variety of locations to help protect people from harm and make sure everyone is obeying the ...

Reptiles y anfibios is one book in the Spanish-language Gran Atlas de la Ciencia series that covers today's most popular science topics, from digital TV to microchips to touchscreens and beyond. Perennial subjects in earth science, life science, and physical science are all explored in detail. Amazing graphics--more than 1,000 per title--combined with concise summaries help students understand complex subjects. Correlated to the science curriculum in grades 5-9, each title also contains a glossary with full definitions for vocabulary.

The Industrial Revolution was one of the most dramatic eras of all time, filled with fascinating people, strange events, and incredible stories. This period of great change comes into sharp focus through each spread with detailed, accessible language. Each fact is complemented with vivid, carefully-chosen historical images and illustrations, and a caption that adds just a touch more history. Readers are drawn deep into the facts not covered in history textbooks, like working conditions, inventions, failures, and characters, to make this important history lesson fun and engaging.

Presents pairs of photographs of similar items, including a hot dog and an ice cream cone, and the sun and the sea, to introduce the difference between hot and cold.